Flat Roofing · Kelowna & the Okanagan Flat Roofing.
Torch-on, TPO and EPDM flat roofs for homes and commercial buildings across the Okanagan: new, re-roofed or laid over. Free estimates, backed by a 15-year workmanship warranty.
Torch-on, TPO or EPDM.
It depends on the building: its use, the traffic on the roof, the equipment up there and the budget. We install torch-on, TPO and EPDM, and recommend one once we have seen the roof.
Below, each one and how it is built, then the three side by side.
Torch-On.
SBS-modified bitumen membrane applied with open flame for a fully bonded, monolithic waterproof surface. Multi-ply redundancy for superior long-term performance.
- 20–30 yrLifespan
- Multi-PlyRedundancy
- Class AFire Rating Available
Two plies.
Torched into one.
Watch a Premium SBS torch-on system come together — base and cap sheets rolled out and flame-fused over an asphaltic cover board. Our commercial bread and butter.
- 01Steel DeckCorrugated galvanized B-deck, fastened to spec
- 02Vapour BarrierSeals the deck — interior moisture never reaches the insulation
- 03Polyiso InsulationTwo layers, joints staggered — no thermal shortcut
- 04Cover BoardAsphaltic board — the only surface a torch may touch
- 05SBS Base Sheet3.0 mm base ply, torch-welded — the underside film burns off as it bonds
- 06Edge Metal & Base Flashing100 mm flange primed and nailed 100 mm o.c., then flashed 150 mm onto the field
- 07Granulated Cap Sheet4.0 mm mineral cap — 90 mm selvage laps, offset from the base
TPO.
The white single-ply roof most new commercial buildings get. Heat-welded seams make one continuous sheet that reflects the sun and stands up to punctures.
- 20–30 yrLifespan
- ~78%Reflected
- Class AFire Rating Available
Built in
layers.
Watch a Premium TPO system come together — six engineered layers fused into one watertight, reflective surface.
- 01Steel DeckCorrugated galvanized B-deck, fastened to spec
- 02Vapour BarrierStops interior moisture migration
- 03Polyiso InsulationTwo staggered layers for full R-value
- 04Cover BoardImpact + fire protection, plate substrate
- 05Perimeter FlashingCoated-metal drip edge, engineered for wind
- 06TPO MembraneInduction-welded to plates, hot-air welded laps
EPDM.
Synthetic rubber membrane, used on commercial roofs for more than 50 years. One roof lasts 25–30.
- 25–30 yrLifespan
- −45°CStays Flexible To
- Class AFire Rating Available
Built in
sheets.
Watch a Premium EPDM system come together, fully adhered or mechanically fastened — full-width rubber sheets sealed against decades of Okanagan weather.
- 01Steel DeckCorrugated galvanized B-deck, fastened to spec
- 02Vapour BarrierSelf-adhered sheets, lapped and sealed to the deck
- 03Polyiso InsulationTwo layers, joints staggered — no thermal shortcut
- 04Cover BoardHigh-density board, eight screws and plates per sheet, driven into the deck
- 05EPDM Membrane60-mil rubber in 3 m sheets — adhesive on both the board and the sheet, splice primed and taped
- 06Edge Metal & Strip-InDrip edge on a nailed cleat, flange nailed 150 mm o.c., sealed under a 150 mm cover strip
The three, compared.
| Torch-On | TPO | EPDM | |
|---|---|---|---|
| Lifespan | 20–30 yr | 20–30 yr | 25–30 yr |
| Cost Range | $$ | $$ | $–$$ |
| Fire Rating | Class A available | Class A available | Class A available |
| Handles Snow | Excellent | Good | Good |
| Maintenance | Medium | Low | Low |
| Energy Efficiency | Good | Excellent | Good |
| Best For | Commercial and residential flat roofs | Large commercial roofs | Low-traffic flat roofs |
$ to $$$$ is relative installed cost. Your price comes after we have seen the roof.
More for flat roofs.
Flat roofs we’ve done.
Flat roof questions.
Need a flat roof looked at?
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Free estimates • Torch-on, TPO & EPDM • Kelowna & the Okanagan