Renovate a flat roof or a low sloped roof

Last updated February 1, 2024

Need to renovate the flat roof or the low sloped roof on your building? In order to replace a roof covering, you must comply with the regulations in force and, in most cases, obtain a permit.

Standards to renovate or repair a flat roof or a low sloped roof (less than 2:12 or 16.7 per cent) may vary based on the borough, the type of building and the  nature of the work.

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Minor repairs and maintenance

A permit is not required to repair or maintain your roof (ex. add tar, add gravel).

Major repairs

A permit is required to install or replace the covering on a flat roof or a low sloped roof.

Authorized materials

The following materials and roofing types are authorized:

  • green roof 
  • white material, material painted white or covered with a heat reflector roof covering or white gravel
  • material with a solar reflectance index (SRI) of at least 66
  • a combination of these coverings 

If you wish to install a green roof, you must go to the permit counter to submit an application for a permit.
Contact the permit counter to verify the rules applicable to your situation.

Permit fees

Processing fees for permit applications vary based on the projected cost of the work. You must pay $9.80 for every $1,000 of work.

Regardless of the amount of work, you will be required to pay a minimum:

  • $161 for a strictly residential building
  • $473 for a commercial, industrial, institutional or mixed-use building

The projected costs must include all fees associated with the work (ex. plans, labour, equipment), taxes included.

Additional fees may apply if your building or the area in which it is located has historic value or is subject to specific architectural standards.

The fees are non-refundable.

Further reading: The cost of a renovation permit

Required documents

The following documents are required to process your application:

  • bid or cost estimate for the work, including taxes and fees for plans and specifications
  • certificate of location
  • technical sheet with a description of materials: solar reflectance index (SRI), flashing, colour
  • any other document required to process the application

If the work is done on a condominium:

  • letter of authorization from each owner or resolution from the condominium syndicate

If you are a representative:

  • power of attorney authorizing you to act on behalf of the owner

Further reading: How to obtain the documents required to apply for a permit

Communication channels

Submit your renovation permit applications all at once (building interior, roof, doors and windows, exterior siding, projections such as stairs, balconies and terraces).

Payment method

  • Credit card (MasterCard, Visa)

You need an account on montreal.ca to use this service.

Point of service

555 Rue Chabanel Ouest
Suite 600
Montréal, QC H2N 2H8

Legislation

Minor repairs and maintenance

A permit is not required to repair or maintain your roof (ex. replace a few shingles, add tar).

However, if the insulation or the roof structure is affected, you must obtain a permit.

Major repairs

A permit is required to install or replace the covering on a flat roof or a low sloped roof.

Authorized materials

Materials required for flat roofs:

  • white material, material painted white or covered with a heat reflector roof covering or white gravel
  • material with solar reflectance index (SRI) of at least 78, certified by the manufacturer or a professional
  • green roof

Permit fees

Processing fees for permit applications vary based on the projected cost of the work. You must pay $9.80 for every $1,000 of work.

Regardless of the amount of work, you will be required to pay a minimum:

  • $161 for a strictly residential building
  • $473 for a commercial, industrial, institutional or mixed-use building

The projected costs must include all fees associated with the work (ex. plans, labour, equipment), taxes included.

Additional fees may apply if your building or the area in which it is located has historic value or is subject to specific architectural standards.

The fees are non-refundable.

Further reading: The cost of a renovation permit

Required documents

The following documents are required to process your application:

  • bid or cost estimate for the work, including taxes and fees for plans and specifications
  • certificate of location
  • technical sheet with a description of the proposed materials. For flat roofs the sheet must indicate the solar reflectance index (SRI), and for sloped roofs in certain areas, it must indicate the materials and the colour of the roof
  • any other document required to process the application

If the work is done on a condominium:

  • letter of authorization from each owner or resolution from the condominium syndicate

If you are a representative:

  • power of attorney authorizing you to act on behalf of the owner

Further reading: How to obtain the documents required to apply for a permit

Communication channels

In person

Point of service

By appointment
7171 Rue Bombardier
Second floor
Montréal, QC H1J 2E9

Minor repairs and maintenance

A permit is not required to repair or maintain your roof. In particular, you can:

  • replace a few shingles and or add tar
  • replace the roof membrane, except if the building has historic value and you change the dimensions of the flashing

If your building is located within the Mount Royal Heritage Site, you must obtain authorization from the borough before you carry out the work. 

Major repairs

A permit is required to replace the roof structure.

Authorized materials

The following materials and roofing types are authorized:

  • white material. material painted white or covered with a heat reflector roof covering or white gravel
  • material with a solar reflectance index (SRI) of at least 56, certified by the manufacturer or a professional
  • green roof
  • a combination of these coverings

These requirements do not apply to the part of a roof occupied by mechanical equipment (ex. air conditioner, heat pump) or a terrace.

If you wish to install a green roof, you must go to the permit counter to apply for a permit.

Permit fees

Processing fees for permit applications vary based on the projected cost of the work. You must pay $9.80 for every $1,000 of work.

Regardless of the amount of work, you will be required to pay a minimum:

  • $161 for a strictly residential building
  • $473 for a commercial, industrial, institutional or mixed-use building

The projected costs must include all fees associated with the work (ex. plans, labour, equipment), taxes included.

Additional fees may apply if your building or the area in which it is located has historic value or is subject to specific architectural standards.

The fees are non-refundable.

Further reading: The cost of a renovation permit

Required documents

The following documents are required to process your application:

  • bid or cost estimate for the work, including taxes and fees for plans and specifications
  • certificate of location
  • technical sheet with a description of materials: solar reflectance index (SRI), flashing, colour
  • any other document required to process the application

If the work is done on a condominium:

  • letter of authorization from each owner or resolution from the condominium syndicate

If you are a representative:

  • power of attorney authorizing you to act on behalf of the owner

Further reading: How to obtain the documents required to apply for a permit

Communication channels

Submit your renovation permit applications all at once (building interior, roof, doors and windows, exterior siding, projections such as stairs, balconies and terraces).

Payment method

  • Credit card (MasterCard, Visa)

You need an account on montreal.ca to use this service.

Point of service

By appointment
5160 Boulevard Décarie
Montréal, QC H3X 2H9

Minor repairs and maintenance

A permit is not required to repair or maintain your roof (ex. replace a few shingles, add tar).

However, if the insulation or the roof structure is affected, you must obtain a permit.

Major repairs

A permit is required to replace the roof covering or change its structure.

Authorized materials

The following materials are authorized on existing constructions:

  • asphalt, fibreglass or real wood shingles
  • heat-welded or adhesive membranes 
  • metal enamel or painted metal pre-baked in a plant
  • tiles made of clay, slate, concrete, fibre or a similar synthetic product specifically designed for a roof covering
  • galvanized sheet metal, installed the Canadian way, pinched or “baguette” style (with batten seams)
  • copper
  • zinc
  • green roof
  • glass

The following materials are authorized for new constructions:

  • material with a solar reflectance index (SRI) of at least 78, certified by the manufacturer or a professional
  • a green roof 
  • a combination of these roof coverings

These requirements do not apply to the part of the roof occupied by mechanical equipment (ex. air conditioner, heat pump) or a terrace.

Permit fees

Processing fees for permit applications vary based on the projected cost of the work. You must pay $9.80 for every $1,000 of work.

Regardless of the amount of work, you will be required to pay a minimum:

  • $161 for a strictly residential building
  • $473 for a commercial, industrial, institutional or mixed-use building

The projected costs must include all fees associated with the work (ex. plans, labour, equipment), taxes included.

Additional fees may apply if your building or the area in which it is located has historic value or is subject to specific architectural standards.

The fees are non-refundable.

Further reading: The cost of a renovation permit

Required documents

The following documents are required to process your application:

  • bid or cost estimate for the work, including taxes and fees for plans and specifications
  • certificate of location
  • technical sheet with a description of materials: solar reflectance index (SRI)
  • where required by law, a structural plan approved by a professional
  • any other document required to process the application

If the work is done on a condominium:

  • letter of authorization from each owner or resolution from the condominium syndicate

If you are a representative:

  • power of attorney authorizing you to act on behalf of the owner

Further reading: How to obtain the documents required to apply for a permit

Communication channels

Submit your renovation permit applications all at once (building interior, roof, doors and windows, exterior siding, projections such as stairs, balconies and terraces).

Payment method

  • Credit card (MasterCard, Visa)

You need an account on montreal.ca to use this service.

Point of service

1800 Boulevard Saint-Joseph
Montréal, QC H8S 2N4

Standards vary based on the total roof area.

Minor repairs and maintenance

A permit is not required to repair or maintain your roof (ex. replace a few shingles, add tar).

However, if the insulation or the roof structure is affected, you must obtain a permit.

Major repairs

A permit is required to install or replace the covering on a flat roof or a low sloped roof.

Authorized materials

You are required to use one of the following new materials on a flat roof with a total area of less than 300 m2:

  • slate
  • clay tile
  • wood shingle
  • copper sheet
  • asphalt shingle
  • pre-enameled roofing sheet
  • corrugated concrete roof tile
  • asphalt and gravel
  • elastomeric membrane
  • polyolefin thermoplastic membrane

The following materials and roofing types are authorized on a flat roof with a total area of more than 300 m2:

  • white material, material painted white or covered with a heat reflector roof covering or white gravel
  • material with a solar reflectance index (SRI) of at least 56, certified by the manufacturer or a professional
  • green roof
  • a combination of these roof coverings

These requirements do not apply to the part of a roof occupied by mechanical equipment (ex. air conditioner, heat pump) or a terrace.

Permit fees

Processing fees for permit applications vary based on the projected cost of the work. You must pay $9.80 for every $1,000 of work.

Regardless of the amount of work, you will be required to pay a minimum:

  • $161 for a strictly residential building
  • $473 for a commercial, industrial, institutional or mixed-use building

The projected costs must include all fees associated with the work (ex. plans, labour, equipment), taxes included.

Additional fees may apply if your building or the area in which it is located has historic value or is subject to specific architectural standards.

The fees are non-refundable.

Further reading: The cost of a renovation permit

Required documents

The following documents are required to process your application:

  • bid or cost estimate for the work, including taxes and fees for plans and specifications
  • certificate of location
  • technical sheet with a description of materials: solar reflectance index (SRI), flashing, colour
  • any other document required to process the application

If the work is done on a condominium:

  • letter of authorization from each owner or resolution from the condominium syndicate

If you are a representative:

  • power of attorney authorizing you to act on behalf of the owner

Further reading: How to obtain the documents required to apply for a permit

Communication channels

Submit your renovation permit applications all at once (building interior, roof, doors and windows, exterior siding, projections such as stairs, balconies and terraces).

Payment method

  • Credit card (MasterCard, Visa)

You need an account on montreal.ca to use this service.

By appointment
55 Avenue Dupras
Montréal, QC H8R 4A8

Minor repairs and maintenance

A permit is not required to maintain or repair your flat roof. For example, you do not require a permit to:

  • carry out minor maintenance work
  • replace the roofing membrane

Major repairs

A permit is required to change the insulation or roof structure. For example, you do require a permit to:

  • change the slope of the roof
  • add mechanical equipment (ex.  roof ventilators)
  • add a skylight

Authorized materials

The following materials are authorized on new buildings or when there is a change in volume (or slope) on an existing building:

  • green roof
  • material with a solar reflectance index (SRI) of at least 56, certified by the manufacturer or a professional, including:
  • white or pale grey material
  • material painted white or pale grey
  • material covered with a white or grey reflective coating or ballast
  • a combination of these roof coverings

If you wish to install a green roof, you must go to the permit counter to apply for a permit.

Permit fees

Processing fees for permit applications vary based on the projected cost of the work. You must pay $9.80 for every $1,000 of work.

Regardless of the amount of work, you will be required to pay a minimum:

  • $161 for a strictly residential building
  • $473 for a commercial, industrial, institutional or mixed-use building

The projected costs must include all fees associated with the work (ex. plans, labour, equipment), taxes included.

Additional fees may apply if your building or the area in which it is located has historic value or is subject to specific architectural standards.

The fees are non-refundable.

Further reading: The cost of a renovation permit

Required documents

The following documents are required to process your application:

  • bid or cost estimate for the work, including taxes and fees for plans and specifications
  • certificate of location
  • technical sheet with a description of materials: solar reflectance index (SRI), flashing, colour
  • building specification sheet
  • professional-quality scale plans, signed and sealed by an architect or an engineer where required by law, showing the existing situation and the projected situation 
  • any other document required to process the application

If the work is done on a condominium:

  • letter of authorization from each owner or resolution from the condominium syndicate

If you are a representative:

  • power of attorney authorizing you to act on behalf of the owner

Further reading: How to obtain the documents required to apply for a permit

Communication channels

Submit your renovation permit applications all at once (building interior, roof, doors and windows, exterior siding, projections such as stairs, balconies and terraces).

Payment method

  • Credit card (MasterCard, Visa)

You need an account on montreal.ca to use this service.

Point of service

201 Avenue Laurier Est
Fifth floor
Montréal, QC H2T 3E6

Minor repairs and maintenance

A permit is not required to repair or maintain your roof (ex. replace a few shingles, add tar).

However, if the insulation or the roof structure is affected, you must obtain a permit.

Major repairs

A permit is required to install or replace the covering on a flat roof or a low sloped roof.

Authorized materials

Multi-layered roofing systems are authorized, including a layer of asphalt and gravel, on the condition that the cap sheet is made of marble ballast or white gravel.

The following materials and roofing types are authorized:

  • green roof
  • white material, material painted white or covered with a white reflective coating or ballast
  • material with a solar reflectance index (SRI) of at least 78, certified by the manufacturer
  • a combination of these coverings

These requirements do not apply to the part of a roof occupied by mechanical equipment (ex. air conditioner, heat pump), a greenhouseor a terrace.

Permit fees

Processing fees for permit applications vary based on the projected cost of the work. You must pay $9.80 for every $1,000 of work.

Regardless of the amount of work, you will be required to pay a minimum:

  • $161 for a strictly residential building
  • $473 for a commercial, industrial, institutional or mixed-use building

The projected costs must include all fees associated with the work (ex. professional fees, plans, labour, materials, equipment), taxes included.

Additional fees may apply if your building or the area in which it is located has historic value or is subject to specific architectural standards.

These are analysis fees and are therefore non-refundable.

Further reading: The cost of a renovation permit

Required documents

The following documents are required to process your application:

  • bid or cost estimate for the work, including taxes and fees for plans and specifications
  • technical sheet with a description of materials: solar reflectance index (SRI), flashing, colour
  • any other document required to process the application

If the work is done on a condominium:

  • letter of authorization from each owner or resolution from the condominium syndicate

If you are a representative:

  • power of attorney authorizing you to act on behalf of the owner

Further reading: How to obtain the documents required to apply for a permit

Learn more

For more information, please contact the permit counter.

Apply

Online

Submit your renovation permit applications all at once (building interior, roof, doors and windows, exterior siding, projections such as stairs, balconies and terraces).

To access this service, you must have an account on montreal.ca.

Payment method

  • Credit card (MasterCard, Visa)

Minor repairs and maintenance

A permit is not required to repair or maintain your roof (ex. replace a few shingles, add tar).
However, if the insulation or the roof structure is affected, you must obtain a permit.

Major repairs

A permit is required to install or replace the covering on a flat roof or a low sloped roof.

Authorized materials

The following materials and roofing types are authorized:

  • white material, material painted white or covered with a white reflective roof covering or white gravel
  • material with a solar reflectance index (SRI) of at least 78 over at least 75 per cent of the roof surface, certified by the manufacturer or a professional
  • green roof
  • a combination of these coverings

Roof coverings made of asphalt, tar and gravel are prohibited.

These requirements do not apply to the part of a roof occupied by mechanical equipment (ex. air conditioner, heat pump) or a terrace.

Permit fees

Processing fees for permit applications vary based on the projected cost of the work. You must pay $9.80 for every $1,000 of work.

Regardless of the amount of work, you will be required to pay a minimum:

  • $161 for a strictly residential building
  • $473 for a commercial, industrial, institutional or mixed-use building

The projected costs must include all fees associated with the work (ex. plans, labour, equipment), taxes included.

Additional fees may apply if your building or the area in which it is located has historic value or is subject to specific architectural standards.

The fees are non-refundable.

Further reading: The cost of a renovation permit

Required documents

The following documents are required to process your application:

  • bid or cost estimate for the work, including taxes and fees for plans and specifications
  • certificate of location
  • technical sheet with a description of materials: solar reflectance index (SRI), flashing, colour
  • any other document required to process the application

If the work is done on a condominium:

  • letter of authorization from each owner or resolution from the condominium syndicate

If you are a representative:

  • power of attorney authorizing you to act on behalf of the owner

Further reading: How to obtain the documents required to apply for a permit

Communication channels

Submit your renovation permit applications all at once (building interior, roof, doors and windows, exterior siding, projections such as stairs, balconies and terraces).

Payment method

  • Credit card (MasterCard, Visa)

You need an account on montreal.ca to use this service.

Point of service

15795, boulevard Gouin Ouest
(on the 2nd floor, rear door of the citizen reception and public safety office)
Montréal, QC H9H 1C5

Minor repairs and maintenance

A permit is not required to repair or maintain your roof. In particular, you can:

  • replace a few shingles and or add tar
  • replace the roof membrane, except if the building has historic value and you change the dimensions of the flashing

However, if the insulation or the roof structure is affected, you must obtain a permit.

Major repairs

A permit is required to:

  • carry out work on a roof made of materials other than asphalt
  • completely renovate an existing roof
  • partially re-cover a roof spanning a total area of 500 m2 or more

Authorized materials

The following materials and roofing types are authorized:

  • white material, material painted white or covered with a heat reflector roof covering or white gravel
  • material with a solar reflectance index (SRI) of at least 56, certified by the manufacturer or a professional
  • green roof 
  • a combination of these coverings 

These requirements do not apply to the part of a roof occupied by mechanical equipment (ex. air conditioner, heat pump) or a terrace.

If you wish to install a green roof, you must go to the permit counter to apply for a permit.

Permit fees

Processing fees for permit applications vary based on the projected cost of the work. You must pay $9.80 for every $1,000 of work.

Regardless of the amount of work, you will be required to pay a minimum:

  • $161 for a strictly residential building
  • $473 for a commercial, industrial, institutional or mixed-use building

The projected costs must include all fees associated with the work (ex. plans, labour, equipment), taxes included.

Additional fees may apply if your building or the area in which it is located has historic value or is subject to specific architectural standards.

The fees are non-refundable.

Further reading: The cost of a renovation permit

Required documents

The following documents are required to process your application:

  • bid or cost estimate for the work, including taxes and fees for plans and specifications
  • certificate of location
  • technical sheet with a description of materials: solar reflectance index (SRI), flashing, colour
  • any other document required to process the application

If the work is done on a condominium:

  • letter of authorization from each owner or resolution from the condominium syndicate

If you are a representative:

  • power of attorney authorizing you to act on behalf of the owner

Further reading: How to obtain the documents required to apply for a permit

Communication channels

Submit your renovation permit applications all at once (building interior, roof, doors and windows, exterior siding, projections such as stairs, balconies and terraces).

Payment method

  • Credit card (MasterCard, Visa)

You need an account on montreal.ca to use this service.

Point of service

By appointment
6854 Rue Sherbrooke Est
Montréal, QC H1N 1E1

Minor repairs and maintenance

A permit is not required to repair or maintain your roof (ex. replace a few shingles, add tar).

However, if the insulation or the roof structure is affected, you must obtain a permit.

Major repairs

A permit is required to install or replace the covering on a flat roof or a low sloped roof.

Authorized materials

The following materials and roofing types are authorized:

  • white material, material painted white or covered with a heat reflector roof covering or white gravel
  • material with a solar reflectance index (SRI) of at least 78, certified by the manufacturer or a professional
  • green roof 
  • a combination of these coverings 

These requirements do not apply to the part of a roof occupied by mechanical equipment (ex. air conditioner, heat pump) or a terrace.

If you wish to install a green roof, you must go to the permit counter to apply for a permit

Permit fees

Processing fees for permit applications vary based on the projected cost of the work. You must pay $10.50 for every $1,000 of work.

Regardless of the amount of work, you will be required to pay a minimum:

  • $161 for a strictly residential building
  • $473 for a commercial, industrial, institutional or mixed-use building

The projected costs must include all fees associated with the work (ex. plans, labour, equipment), taxes included.

Additional fees may apply if your building or the area in which it is located has historic value or is subject to specific architectural standards.

The fees are non-refundable.

Further reading: The cost of a renovation permit

Required documents

The following documents are required to process your application:

  • bid or cost estimate for the work, including taxes and fees for plans and specifications
  • certificate of location
  • technical sheet with a description of materials: solar reflectance index (SRI), flashing, colour
  • any other document required to process the application

If the work is done on a condominium:

  • letter of authorization from each owner or resolution from the condominium syndicate

If you are a representative:

  • power of attorney authorizing you to act on behalf of the owner

Further reading: How to obtain the documents required to apply for a permit

Communication channels

Submit your renovation permit applications all at once (building interior, roof, doors and windows, exterior siding, projections such as stairs, balconies and terraces).

Payment method

  • Credit card (MasterCard, Visa)

You need an account on montreal.ca to use this service.

Point of service

4241 Place de l'Hôtel-de-Ville
Montréal, QC H1H 1S4

A permit is required to install or replace the covering on a roof.

Authorized materials

The following materials are authorized on new buildings or when there is a change in volume (or slope) on an existing building:

  • white material, material covered with a white reflective coating or ballast
  • material with a solar reflectance index (SRI) of 78 or higher over at least 75 per cent of the roof surface, or with an SRI of 66 per cent or higher over the entire roof surface (100 per cent)
  • green roof

If you wish to install a green roof, you must go to the permit counter to apply for a permit.

Permit fees

Processing fees for permit applications vary based on the projected cost of the work. You must pay $9.80 for every $1,000 of work.

Regardless of the amount of work, you will be required to pay a minimum:

  • $160.45 for a strictly residential building
  • $472.16 for a commercial, industrial, institutional or mixed-use building

The projected costs must include all fees associated with the work (ex. plans, labour, equipment), taxes included.

Additional fees may apply if your building or the area in which it is located has historic value or is subject to specific architectural standards.

The fees are non-refundable.

Further reading: The cost of a renovation permit

Required documents

The following documents are required to process your application:

  • bid or cost estimate for the work, including taxes and fees for plans and specifications
  • certificate of location
  • technical sheet with a description of materials: solar reflectance index (SRI), flashing, colour
  • any other document required to process the application

If the work is done on a condominium:

  • letter of authorization from each owner or resolution from the condominium syndicate

If you are a representative:

  • power of attorney authorizing you to act on behalf of the owner

Further reading: How to obtain the documents required to apply for a permit

Communication channels

Submit your renovation permit applications all at once (building interior, roof, doors and windows, exterior siding, projections such as stairs, balconies and terraces).

Payment method

  • Credit card (MasterCard, Visa)

You need an account on montreal.ca to use this service.

Point dof service

1431 Avenue Van Horne, 2nd floor
Montréal, QC H2V 1K9

Minor repairs and maintenance

A permit is not required to:

  • maintain or repair a sloped roof (replace a few shingles, add tar)
  • change an asphalt roof covering or asphalt shingles with identical material

However, you must apply for a permit if you use a different material.

Major repairs

A permit is required to renovate or replace a roof covering made of materials other than asphalt.

Authorized materials

The following materials and types of roofing are authorized:

  • light-coloured material or material covered with a reflective coating or a pale-coloured ballast with a solar reflectance index (SRI) of at least 66, certified by the manufacturer or a professional
  • a green roof
  • a combination of these roof coverings

These requirements do not apply to the part of a roof occupied by mechanical equipment (ex. air conditioner, heat pump) or a terrace.

If you wish to install a green roof, you must go to the permit counter to apply for a permit.

Permit fees

Processing fees for permit applications vary based on the projected cost of the work. You must pay $9.80 for every $1,000 of work.

Regardless of the amount of work, you will be required to pay a minimum:

  • $161 for a strictly residential building
  • $473 for a commercial, industrial, institutional or mixed-use building

The projected costs must include all fees associated with the work (ex. plans, labour, equipment), taxes included.

Additional fees may apply if your building or the area in which it is located has historic value or is subject to specific architectural standards.

The fees are non-refundable.

Further reading: The cost of a renovation permit

Required documents

The following documents are required to process your application:

  • bid or cost estimate for the work, including taxes and fees for plans and specifications
  • certificate of location
  • technical sheet with a description of materials: solar reflectance index (SRI), flashing, colour
  • any other document required to process the application

If the work is done on a condominium:

  • letter of authorization from each owner or resolution from the condominium syndicate

If you are a representative:

  • power of attorney authorizing you to act on behalf of the owner

Further reading: How to obtain the documents required to apply for a permit

Communication channels

Submit your renovation permit applications all at once (building interior, roof, doors and windows, exterior siding, projections such as stairs, balconies and terraces).

Payment method

  • Credit card (MasterCard, Visa)

You need an account on montreal.ca to use this service.

Point of service

13665 Boulevard de Pierrefonds
Montréal, QC H9A 2Z4

You do not need a permit to: 

  • repair or replace asphalt roofing or asphalt shingles if you use a material similar to the original material 

You need a permit to:

  • repair or replace asphalt roofing or asphalt shingles using a material different from the original material 
  • replace a roof using materials other than asphalt 

Authorized materials

The following materials and roofing types are authorized:

  • white material, material painted white or covered with a heat reflector roof covering or white gravel
  • material with a solar reflectance index (SRI) of at least 78, certified by the manufacturer or a professional
  • green roof 
  • a combination of these coverings

These requirements do not apply to the part of a roof occupied by mechanical equipment (ex. air conditioner, heat pump) or a terrace.
If you wish to install a green roof, you must go to the permit counter to apply for a permit.

Permit fees

Processing fees for permit applications vary based on the projected cost of the work. You must pay $9.80 for every $1,000 of work.

Regardless of the amount of work, you will be required to pay a minimum:

  • $161 for a strictly residential building
  • $473 for a commercial, industrial, institutional or mixed-use building

The projected costs must include all fees associated with the work (ex. plans, labour, equipment), taxes included.

Additional fees may apply if your building or the area in which it is located has historic value or is subject to specific architectural standards.

The fees are non-refundable.

Further reading: The cost of a renovation permit

Required documents

The following documents are required to process your application:

  • bid or cost estimate for the work, including taxes and fees for plans and specifications
  • certificate of location
  • technical sheet with a description of materials: solar reflectance index (SRI), flashing, colour
  • any other document required to process the application

If the work is done on a condominium:

  • letter of authorization from each owner or resolution from the condominium syndicate

If you are a representative:

  • power of attorney authorizing you to act on behalf of the owner

Further reading: How to obtain the documents required to apply for a permit

Communication channels

Submit your renovation permit applications all at once (building interior, roof, doors and windows, exterior siding, projections such as stairs, balconies and terraces).

Payment method

  • Credit card (MasterCard, Visa)

You need an account on montreal.ca to use this service.

Point of service

12090 Rue Notre-Dame Est
Montréal, QC H1B 2Z1

Minor repairs and maintenance

A permit is not required to repair or maintain your roof (ex. replace a few shingles, add tar).

However, if the insulation or the roof structure is affected, you must obtain a permit.

Major repairs

A permit is required to install or replace the covering on a flat roof or a low sloped roof.

Authorized materials

The following materials and roofing types are authorized:

  • white material, material painted white or covered with a heat reflector roof covering or white gravel
  • material with a solar reflectance index (SRI) of at least 78, certified by the manufacturer or a professional
  • a green roof
  • a combination of these coverings

These requirements do not apply to the part of a roof occupied by mechanical equipment (ex. air conditioner, heat pump) or a terrace.
If you wish to install a green roof, you must go to the permit counter to apply for a permit.

Prohibited materials

Tar and white gravel roofs are prohibited on new buildings.

Permit fees

Processing fees for permit applications vary based on the projected cost of the work. You must pay $9.80 for every $1,000 of work.

Regardless of the amount of work, you will be required to pay a minimum:

  • $161 for a strictly residential building
  • $473 for a commercial, industrial, institutional or mixed-use building

The projected costs must include all fees associated with the work (ex. plans, labour, equipment), taxes included.

Additional fees may apply if your building or the area in which it is located has historic value or is subject to specific architectural standards.

The fees are non-refundable.

Further reading: The cost of a renovation permit

Required documents

The following documents are required to process your application:

  • Bid or cost estimate for the work, including taxes and fees for plans and specifications
  • Technical sheet with a description of materials: solar reflectance index (SRI), flashing, colour
  • Certificate of location
  • Any other document required to process the application

If the work is done on a condominium:

  • Letter of authorization from each owner or resolution from the condominium syndicate

If you are a representative:

  • Power of attorney authorizing you to act on behalf of the owner

Further reading: How to obtain the documents required to apply for a permit

Communication channels

Submit your renovation permit applications all at once (building interior, roof, doors and windows, exterior siding, projections such as stairs, balconies and terraces).

Payment method

  • Credit card (MasterCard, Visa)

You need an account on montreal.ca to use this service.

Point of service

5650 Rue D'Iberville
Second floor
Montréal, QC H2G 2B3

Minor repairs and maintenance

A permit is not required to repair or maintain your roof (ex. replace a few shingles, add tar).

However, if the insulation or the roof structure is affected, you must obtain a permit.

Major repairs

A permit is required to install or replace the covering on a flat roof or a low sloped roof.

Authorized materials

The following materials and roofing types are authorized:

  • white material, material painted white or covered with a heat reflector roof covering or white gravel
  • material with a solar reflectance index (SRI) of at least 66, certified by the manufacturer or a professional
  • green roof 
  • a combination of these coverings 

These requirements do not apply to the part of a roof occupied by mechanical equipment (ex. air conditioner, heat pump) or a terrace.

If you wish to install a green roof, you must go to the permit counter to apply for a permit.

Permit fees

Processing fees for permit applications vary based on the projected cost of the work. You must pay $9.80 for every $1,000 of work.

  • $161 for a strictly residential building
  • $473 for a commercial, industrial, institutional or mixed-use building

The projected costs must include all fees associated with the work (ex. plans, labour, equipment), taxes included.

Additional fees may apply if your building or the area in which it is located has historic value or is subject to specific architectural standards.

The fees are non-refundable.

Further reading: The cost of a renovation permit

Required documents

The following documents are required to process your application:

  • bid or cost estimate for the work, including taxes and fees for plans and specifications
  • certificate of location
  • technical sheet with a description of materials: solar reflectance index (SRI), flashing, colour
  • any other document required to process the application

If the work is done on a condominium:

  • letter of authorization from each owner or resolution from the condominium syndicate

If you are a representative:

  • power of attorney authorizing you to act on behalf of the owner

Further reading: How to obtain the documents required to apply for a permit

Communication channels

In person

Point of service

777, boulevard Marcel-Laurin
Saint-Laurent, QC H4M 2M7

Minor repairs and maintenance

A permit is not required to maintain or repair your roof covering if the total cost of the work does not exceed $3,000 and if the roof structure is not affected.

Major repairs

A permit is required to install or replace the covering on a flat roof or a low sloped roof.

Authorized materials

On residential buildings, authorized materials are those that are permitted under the building code.

For new constructions and non-residential buildings (commercial, industrial, mixed-use), the following material are authorized when installing or replacing a flat roof or a sloped roof:

  • white material, material painted white or covered with a heat reflector roof covering or white gravel
  • material with a solar reflectance index (SRI) of at least 78, certified by the manufacturer or a professional
  • green roof
  • a combination of these coverings 

These requirements do not apply to the part of a roof occupied by mechanical equipment (ex. air conditioner, heat pump) or a terrace.

Permit fees

Processing fees for permit applications vary based on the projected cost of the work. You must pay $9.80 for every $1,000 of work.

Regardless of the amount of work, you will be required to pay a minimum:

  • $161 for a strictly residential building
  • $473 for a commercial, industrial, institutional or mixed-use building

The projected costs must include all fees associated with the work (ex. plans, labour, equipment), taxes included.

Additional fees may apply if your building or the area in which it is located has historic value or is subject to specific architectural standards.

The fees are non-refundable.

Further reading: The cost of a renovation permit

Required documents

The following documents are required to process your application:

  • bid or cost estimate for the work, including taxes and fees for plans and specifications
  • certificate of location
  • technical sheet with a description of materials: solar reflectance index (SRI), flashing, colour
  • any other document required to process the application

If the work is done on a condominium:

  • letter of authorization from each owner or resolution from the condominium syndicate

If you are a representative:

  • power of attorney authorizing you to act on behalf of the owner

Further reading: How to obtain the documents required to apply for a permit

Communication channels

Submit your renovation permit applications all at once (building interior, roof, doors and windows, exterior siding, projections such as stairs, balconies and terraces).

Payment method

  • Credit card (MasterCard, Visa)

You need an account on montreal.ca to use this service.

Point of service

8400 Boulevard Lacordaire
Montréal, QC H1R 3B1

Minor repairs and maintenance

A permit is not required to repair or maintain your roof (ex. replace a few shingles, add tar).

Major repairs

A permit is required to install or replace the covering on a flat roof or a low sloped roof.

Authorized materials

The following materials and roofing types are authorized:

  • Green roof 
  • White material or material painted white, or covered with heat reflector roof coating or white ballast
  • Material with a solar reflectance index (SRI) of at least 78, certified by the manufacturer or a professional
  • A combination of these coverings

These requirements do not apply to the part of a roof occupied by mechanical equipment (ex. air conditioner, heat pump) or a terrace.

If you wish to install a green roof, you must go to the permit counter to apply for a permit.

Permit fees

Processing fees for permit applications vary based on the projected cost of the work. You must pay $9.80 for every $1,000 of work.

Regardless of the amount of work, you will be required to pay a minimum:

  • $161 for a strictly residential building
  • $473 for a commercial, industrial, institutional or mixed-use building

The projected costs must include all fees associated with the work (ex. plans, labour, equipment), taxes included.

Additional fees may apply if your building or the area in which it is located has historic value or is subject to specific architectural standards.

The fees are non-refundable.

Further reading: The cost of a renovation permit

Required documents

The following documents are required to process your application:

  • bid or cost estimate for the work, including taxes and fees for plans and specifications
  • technical sheet with a description of materials: solar reflectance index (SRI), flashing, colour
  • any other document required to process the application

If the work is done on a condominium:

  • letter of authorization from each owner or resolution from the condominium syndicate

If you are a representative:

  • power of attorney authorizing you to act on behalf of the owner

Further reading: How to obtain the documents required to apply for a permit

Communication channels

Submit your renovation permit applications all at once (building interior, roof, doors and windows, exterior siding, projections such as stairs, balconies and terraces).

Payment method

  • Credit card (MasterCard, Visa)

You need an account on montreal.ca to use this service.

Point of service

4555 Rue de Verdun
Suite 109
Montréal, QC H4G 1M4

Minor repairs and maintenance

A permit is not required to perform minor and occasional repairs. For example, you can repair a crack or hole in your roof covering without a permit, provided that no more than half of the roof surface is being repaired.

Major repairs

A permit is required to install or replace the covering on a flat roof or a low sloped roof.

Authorized materials

The following materials and roofing types are authorized:

  • white material, material painted white or covered with a white reflective roof covering or white gravel
  • material with a solar reflectance index (SRI) of at least 78, certified by the manufacturer or a professional
  • green roof
  • a combination of these coverings

These requirements do not apply to the part of a roof occupied by mechanical equipment (ex. air conditioner, heat pump) or a terrace.

Work that aims to preserve or restore the original appearance of an architectural characteristic is preferred.

Green roof

If you wish to install a green roof, you must go to the permit counter to apply for a permit. You cannot apply online.

Permit fees

Processing fees for permit applications vary based on the projected cost of the work. You must pay $9.80 for every $1,000 of work.

Regardless of the amount of work, you will be required to pay a minimum:

  • $161 for a strictly residential building
  • $473 for a commercial, industrial, institutional or mixed-use building

The projected costs must include all fees associated with the work (ex. plans, labour, equipment), taxes included.

The fees are non-refundable.

Further reading: The cost of a renovation permit

Required documents

The following documents are required to process your application:

  • bid or cost estimate for the work, including taxes and fees for plans and specifications
  • certificate of location
  • technical sheet with a description of materials: solar reflectance index (SRI), flashing, colour
  • any other document required to process the application

If the work is done on a condominium:

  • letter of authorization from each owner or resolution from the condominium syndicate

If you are a representative:

  • power of attorney authorizing you to act on behalf of the owner

Further reading: How to obtain the documents required to apply for a permit

Communication channels

Submit your renovation permit applications all at once (building interior, roof, doors and windows, exterior siding, projections such as stairs, balconies and terraces).

Payment method

  • Credit card (MasterCard, Visa)

You need an account on montreal.ca to use this service.

Point of service

800 Boulevard De Maisonneuve Est
17th floor
Montréal, QC H2L 4L8

Minor repairs and maintenance

A permit is not required to repair or maintain your roof (ex. replace a few shingles, add tar).

Major repairs

A permit is required to install or replace the covering on a flat roof or a low sloped roof.

Authorized materials

The following materials and roofing types are authorized:

  • white material, material painted white or covered with a heat reflector roof covering or white gravel
  • material with a solar reflectance index (SRI) of at least 66, certified by the manufacturer or a professional
  • green roof
  • a combination of these coverings

These requirements do not apply to the part of a roof occupied by mechanical equipment (ex. air conditioner, heat pump) or a terrace.

If you wish to install a green roof, you must go to the permit counter to submit an application for a permit.

Permit fees

Processing fees for permit applications vary based on the projected cost of the work. You must pay $9.80 for every $1,000 of work.

Regardless of the amount of work, you will be required to pay a minimum:

  • $161 for a strictly residential building
  • $473 for a commercial, industrial, institutional or mixed-use building

The projected costs must include all fees associated with the work (ex. plans, labour, equipment), taxes included.

Additional fees may apply if your building or the area in which it is located has historic value or is subject to specific architectural standards.

The fees are non-refundable.

Further reading: The cost of a renovation permit

Required documents

The following documents are required to process your application:

  • bid or cost estimate for the work, including taxes and fees for plans and specifications
  • certificate of location
  • technical sheet with a description of materials: solar reflectance index (SRI), flashing, colour
  • any other document required to process the application

If the work is done on a condominium:

  • letter of authorization from each owner or resolution from the condominium syndicate

If you are a representative:

  • power of attorney authorizing you to act on behalf of the owner

Further reading: How to obtain the documents required to apply for a permit

Communication channels

Submit your renovation permit applications all at once (building interior, roof, doors and windows, exterior siding, projections such as stairs, balconies and terraces).

Payment method

  • Credit card (MasterCard, Visa)

You need an account on montreal.ca to use this service.

Point of service

405 Avenue Ogilvy
Suite 111
Montréal, QC H3N 1M3