Prepare your project in Montréal
Tell us your borough, the number of units and how the roof is accessed. In an occupied building, identify the person coordinating access and any equipment that needs protection. Containers and any use of the street need to be planned before work begins.
A starting point: flat-roof replacement
Start with a sound foundation and 60 mil TPO suited to the building.
Understand this serviceMunicipal procedures
Montréal lists flat-roof renovation requirements by borough. Allowed materials and required documents depend on the address and project; select your borough on the municipal page.
View the official municipal resourceReference checked November 2, 2026. Confirm requirements when you apply.