- 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.
Cossette Roofing works with three main commercial flat roof systems: elastomeric membrane (SBS modified bitumen, torch-applied), TPO membrane (heat-welded, reflective), and metal flat roof systems. Services include targeted leak repairs, membrane patching, full membrane replacement, ventilation assessment and correction, flashing and caulking repairs, and complete commercial re-roofing. Cossette works on all sizes of commercial buildings including offices, warehouses, retail spaces, multi-unit residential buildings, and industrial properties in Gatineau, Ottawa, and the Outaouais.
Commercial flat roofs in Gatineau and Ottawa should be professionally inspected at least twice per year — once in spring after the freeze-thaw season, and once in fall before winter. Spring inspection identifies damage from ice dams, frost heave, and snowmelt infiltration. Fall inspection ensures the roof is watertight before freeze-up. Cossette also recommends inspection after any severe weather event — heavy snowfall, windstorm, or hail. Regular preventive maintenance extends the roof’s lifespan significantly and prevents costly emergency repairs.
The most common causes of commercial flat roof leaks in Gatineau and Ottawa are: deteriorated or lifted membrane seams (especially around penetrations), damaged flashing around HVAC units, vents, pipes, and skylights, ponding water from blocked or inadequate drainage, membrane punctures from foot traffic or maintenance equipment, and ice dam formation at the roof perimeter during freeze-thaw cycles. Cossette diagnoses the root cause during inspection rather than simply patching the visible leak, ensuring the underlying problem is resolved.
Yes. Cossette Roofing provides 24/7 commercial emergency roofing service throughout Gatineau, Ottawa, and the Outaouais — including nights, weekends, and holidays. Commercial emergencies including active water infiltration, storm damage, structural concerns from snow overload, and membrane failure are dispatched immediately. Call 819-777-7177 at any time. Fast response is critical for commercial buildings where a leak can damage inventory, equipment, finishes, and cause business interruption.
Yes. Cossette’s team verifies roof ventilator efficiency and determines whether the number and capacity of ventilators is adequate for the building’s square footage. Inadequate roof ventilation on a commercial building causes condensation, mold growth, and accelerated membrane degradation. Cossette performs ventilator repairs, replacements, and additions as part of its commercial roofing service. Ventilation assessment is included in all commercial roof inspections.
The duration of a commercial flat roof replacement depends on the roof area, the existing system, and weather conditions. A mid-size commercial roof of 5,000 to 10,000 square feet typically takes two to five days. Larger roofs or those with significant existing damage may take longer. Cossette coordinates with building managers to minimize disruption to business operations and provides a detailed project schedule before work begins. Emergency temporary waterproofing can be applied immediately while the full replacement is planned.