Roof Replacement in Saint-Laurent

Step 1: find out whether a permit is required

In Saint-Laurent, the City requires a permit to install or replace the roofing of a flat or low-slope roof.

On a sloped roof, replacing the roofing needs no permit. The City adds that the roof must keep the same shape and the same load. A permit becomes mandatory if you change the material or the structure.

This sorting comes on top of the rules for any repair in Saint-Laurent.

Step 2: get a complete quote

The quote we give you is the first document the City asks for. It must show the cost of the work, taxes included.

At the same time, ask for the data sheet of the proposed materials, with their solar reflectance index. For a flat roof, that sheet shows the roofing is one of the borough's three approved options: white gravel, a material with an index of at least 78, or a green roof.

We take our measurements on the roof. You do not need to go up there to prepare your file.

Step 3: work out the permit fee

The review fee is $9.80 per $1,000 of work. The estimate must include all related costs, such as plans, labour and equipment, taxes included.

The minimum depends on the type of building, whatever the cost of the work:

• $167.40 for a strictly residential building
• $491.70 for a commercial, industrial, institutional or mixed-use building

Extra fees may apply to a building or area with heritage value. Fees are non-refundable.

Step 4: gather the documents

For Saint-Laurent, the City asks for:

1. The quote or cost estimate grid, with taxes.
2. The certificate of location.
3. The data sheet describing the materials and their solar reflectance index.
4. Any other document useful for reviewing the application.

Two situations add a document. In a condominium, you need an authorization letter from each co-owner or a resolution of the syndicate. If someone files on your behalf, they need a power of attorney.

Step 5: file the application, then start the work

The service point listed is the Saint-Laurent permit counter, 777, boulevard Marcel-Laurin. For a white roof or a green roof, the City recommends applying there in person, and states that you can also apply online. For a sloped roof, the page mentions only the counter.

The page consulted gives neither the processing time nor how long the permit stays valid. Ask both questions when you file, and set the work date with us once you have the answer.

To be safe, wait until the permit is in hand before ordering materials. Have the contract state that the start of work depends on the permit being issued.

Frequently asked questions