- 819 777-7177
- info@toiturescossette.ca
- Licence RBQ : 5697-7788-01
Cossette Roofing repairs and installs commercial flat roofs in Gatineau, Ottawa, and the Outaouais. Elastomeric membrane, TPO membrane, and metal flat roof systems. Leak repair, membrane patching, ventilation assessment, and complete re-roofing. 24/7 commercial emergency service. RBQ License 5697-7788-01.
Cossette’s experts quickly diagnose commercial flat roof problems and repair them with effective solutions. The team works with elastomeric membrane, TPO membrane, and metal flat roof systems.
For commercial buildings, Cossette verifies roof ventilator efficiency, determines if the number of ventilators is adequate for the building’s square footage, and performs caulking, flashing, and drainage repairs.
Warning signs: peeling ceiling paint and plaster, wallpaper coming loose, dark stains on ceilings, and water or air infiltrating the building. Don’t wait — problems compound over time. 24/7 commercial emergency service at 819-777-7177.
Elastomeric membrane, TPO membrane, and metal flat roofs. Targeted repairs, patching, ventilation, and complete re-roofing.
Yes. 24/7 including nights, weekends, and holidays. Call 819-777-7177.
Yes. Cossette repairs and installs flat roofs on commercial buildings throughout both the Outaouais and Ottawa regions. Commercial services include elastomeric membrane, TPO membrane, and metal flat roof systems, plus 24/7 emergency response.
Commercial flat roofs should be professionally inspected at least twice a year — in spring after the freeze-thaw season and in fall before winter. Cossette also recommends inspection after any severe weather event. Regular maintenance extends the roof’s life and prevents costly emergency repairs.
The most common causes of commercial flat roof leaks are: deteriorated membrane seams, damaged flashing around roof penetrations (vents, HVAC units, pipes), ponding water from poor drainage, and membrane punctures from foot traffic or debris. Cossette diagnoses the root cause during inspection and provides targeted repairs.
Yes. Cossette’s team verifies roof ventilator efficiency, determines whether the number of ventilators is adequate for the building’s square footage, and replaces or adds ventilators as needed. Proper commercial ventilation prevents moisture buildup that can damage insulation and roofing materials.
Yes. Cossette performs complete commercial re-roofing projects including full tear-off of existing materials, deck inspection and repair, new insulation installation, and application of new membrane or metal roofing systems. The company handles all project stages from evaluation through final inspection.