Flat Roofing & Membrane Roofs in Calgary
Flat and low-slope roofs are everywhere in Calgary’s modern infills, rooftop patios, garages and additions. They need different materials and details than a sloped roof, and most flat roof problems come from poor seams, flashing and drainage. Illyrians Techno Exterior installs and repairs flat roofs on new builds and existing homes across Calgary.
Flat Roof Services
- New flat roof installation for infills, multiplexes and custom homes
- Flat roof replacement when the existing membrane is worn out or leaking
- Rooftop deck and balcony membranes with sleepers or pedestals for decking above
- Parapet and metal flashing details
- Flat roof leak repair, including seams, drains and penetrations
Why Details Matter on Flat Roofs
Water does not run off a flat roof as fast as it does off a sloped one, so every seam, drain, parapet and penetration must be sealed correctly. Proper slope toward drains, good flashing at walls and parapets, and careful work around vents and skylights are what keep a flat roof dry through Calgary snowmelt and summer storms.
Every flat roof we install is backed by our workmanship warranty.
Signs Your Flat Roof Needs Attention
- Ponding water that stays for days after rain
- Blisters, bubbles or cracks in the membrane
- Open or lifting seams
- Leaks or stains on ceilings below a deck or roof
- Damaged flashing at parapets or walls
Our Flat Roof Process
- Inspection – we check the membrane, drains, flashing and deck.
- Written quote – clear scope and material options.
- Preparation – tear-off where needed and deck repairs.
- Installation – membrane, flashing and drainage details.
- Final check and clean-up – we walk the finished roof with you.
Frequently Asked Questions
Can you put a deck on top of a flat roof?
Yes. Rooftop decks are common on Calgary infills. The membrane is protected with sleepers or pedestals so the decking can sit above it without damaging it.
Do you repair flat roofs damaged by hail?
Yes. See our hail damage and insurance claim page for details.
Do you also do sloped roofs?
Yes. We install and replace asphalt shingle and metal roofs as well. See roof replacement.
Planning a flat roof or dealing with a leak? Call 587-581-6963 or request a free inspection using the form below.