Dependable low-slope and flat roofing solutions — TPO, EPDM, and modified bitumen — installed to Canadian standards and built for our climate.
We'll be in touch within 24 hours.
Flat and low-slope roofing requires a different approach than pitched roofing — proper drainage design, seam integrity, and membrane selection are critical to long-term performance. At Top Choice Roofing and Siding, we install three proven flat roofing systems, each suited to specific performance needs and budgets.
TPO (Thermoplastic Polyolefin) is our most popular flat roofing membrane — highly reflective, energy-efficient, and heat-welded at the seams for a watertight bond. EPDM (Ethylene Propylene Diene Monomer) is a durable rubber membrane ideal for residential applications with excellent UV and ozone resistance. Modified Bitumen is a multi-layer asphalt-based system offering exceptional puncture resistance for high-traffic roof areas.
Every installation includes a full drainage assessment, proper insulation, and perimeter flashing sealed to manufacturer specifications — ensuring your flat roof performs reliably through freeze-thaw cycles and heavy snowfall.
Flat roofing is only as good as its installation. Here's what sets our work apart.
TPO, EPDM, and modified bitumen — we help you select the right membrane for your building, climate exposure, and budget.
TPO and EPDM membranes reflect UV radiation and reduce cooling loads, lowering your energy bills year-round.
We engineer every flat roof installation with adequate slope and drainage to prevent ponding water — the number one cause of flat roof failure.
Our membrane systems are selected and installed to handle the repeated freeze-thaw cycles that Ontario winters demand.
All membranes are installed to manufacturer specifications and backed by product warranties of up to 20 years.
Modern flat roofing membranes are designed to perform for 15–25 years with minimal maintenance and simple annual inspections.
Flat and low-slope roofing installations completed across the GTA.
