Flat Roofing

Need a New Flat Roof?

Trust the Experts at Prostall Roofing

At Prostall Roofing, we specialize in professional flat roof installations and replacements for both residential and commercial properties in the Ottawa & Surrounding Areas. From safe removal to the final finishing touches, our experienced team delivers durable, weather-resistant roofing solutions at competitive prices—giving you lasting peace of mind.

We install top-quality flat roofing systems, including 2-ply and 3-ply modified bitumen (SBS) membranes. Our year-round service ensures fast estimates, prompt scheduling, and reliable workmanship using premium materials from trusted suppliers like IKO and Soprema.

Our SBS modified bitumen systems are known for their strength and longevity. They’re ideal not only for flat roofs, but also for waterproofing under wooden patio decks, green roofs, and walk-out decks. We stand behind our work with a 20-year guarantee and confidence that your flat roof is built to last.