Ottawa · Low-slope roofing
Flat Roof Repair & Replacement in Ottawa
Leaks, ponding water, tired membranes and failing flashings — assessed properly, explained plainly and fixed with the right system for Ottawa's snow and freeze-thaw winters.
- Systems
- TPO · EPDM · SBS
- Properties
- Homes & commercial
- Area
- Ottawa & region
Services
Everything a low-slope roof needs
Flat Roof Ottawa focuses on one thing: flat and low-slope roofs on houses and commercial buildings.
Repair
Leaks, open seams, flashing and drain problems — traced to the actual cause.
Replacement
New TPO, EPDM or SBS assemblies, with drainage and insulation reconsidered.
Inspections
Documented condition assessments for owners, buyers and managers.
Maintenance
Seasonal drain clearing and detail checks before freeze-thaw does damage.
Commercial
Retail, office, industrial and multi-unit roofs, planned around occupants.
Residential
Infills, additions, garages, porches and roofs under decks.
Good to know
“Flat” roofs are built to drain
A well-built flat roof has a small, deliberate slope that carries water to drains, scuppers or gutters. When drains block, structure sags or the original slope was too shallow, water sits — and in Ottawa, standing water freezes, thaws and works its way into seams and flashings.
That's why most of our assessments start with drainage, not just the visible damage. Read more in our guide to ponding water and drainage, or compare TPO, EPDM and SBS membranes.
How we work
Diagnosis first. Clear scope. No pressure.
- 1
Tell us about the roof
Use the form to describe what you're seeing. Photos and history help, but aren't required.
- 2
Assessment
We look at the membrane, seams, flashings, penetrations and drainage to find causes, not just symptoms.
- 3
Written options
You get a plain-language scope — repair, maintain or replace — so you can decide and compare.
Request an assessment
Start with a few details
Tell us where the property is and what's going on. We'll follow up by the contact method you give us to discuss next steps. Your details are used only to respond to your request.
Helpful reading
Common questions
Are flat roofs actually flat?
No. A properly built flat roof has a slight designed slope that directs water toward drains, scuppers or gutters. 'Low-slope roof' is the more accurate term.
What types of flat roofs do you work on?
Residential and commercial low-slope roofs, including TPO, EPDM and SBS modified bitumen systems — from rear additions and garages to retail and multi-unit buildings.
Do you publish prices?
No. Flat roof costs depend on size, access, existing layers, insulation, drainage and membrane choice. We explain the cost drivers and give a written scope after an assessment.
Which areas do you serve?
Ottawa, Ontario and surrounding Ontario communities, including Nepean, Kanata, Stittsville, Barrhaven, Orléans, Gloucester, Westboro, the Glebe and downtown.
Have a flat roof question?
Send a few details about the roof and we'll follow up to talk through an assessment.