Marlex Roofing replaces end-of-life flat roofs on commercial, industrial, and multi-unit buildings across Edmonton, St. Albert, Sherwood Park, Spruce Grove, and Leduc, Alberta. We install SBS modified bitumen, TPO, and EPDM rubber membrane systems, matched to your building and budget, with typical installed pricing of $8–$18 per square foot. Every replacement is backed by a 5-year workmanship warranty plus manufacturer system warranties of 15–30 years.
If damage is localized and the insulation is dry, a targeted flat roof repair may be all you need.
Flat roof replacement in Edmonton typically costs $8–$18 per square foot installed, depending on the membrane system (SBS, TPO, or EPDM), insulation requirements, roof access, and whether the existing roof must be torn off. A 5,000 sq ft flat roof usually runs $40,000–$90,000; a 10,000 sq ft roof runs $80,000–$180,000. Marlex Roofing provides free, line-item estimates.
Replacement is usually the right call when moisture has saturated the insulation beneath the membrane, when leaks recur after multiple repairs, when the membrane is past 20–25 years old, or when seams and flashings are failing across large areas. Marlex Roofing performs a full assessment — including infrared moisture scanning when warranted — to tell you honestly whether repair or replacement is more economical.
SBS modified bitumen is Edmonton's most proven system for extreme cold and offers multi-ply redundancy. TPO is best when reducing summer cooling costs matters. EPDM delivers the lowest lifecycle cost on large roofs. The right choice depends on your building's size, use, slope, and budget — Marlex Roofing recommends a system after a free on-site assessment.
A 5,000 sq ft flat roof replacement typically takes 3–7 days; larger buildings may take 1–3 weeks. Timelines depend on tear-off requirements, insulation upgrades, and weather. Marlex Roofing sequences work so the building stays watertight overnight and operations can continue during the project.
Sometimes. If the existing insulation is dry and the deck is sound, a recover (overlay) can save 20–30% versus a full tear-off. Alberta building practice generally allows a maximum of two roofing layers. A moisture scan determines whether recovering is safe — trapping wet insulation under a new membrane leads to premature failure.
Every flat roof replacement includes Marlex Roofing's 5-year workmanship warranty plus the manufacturer's material or system warranty — typically 15 to 30 years depending on the membrane and specification selected. All warranty documentation is provided in writing at project completion.
Marlex Roofing serves Edmonton, St. Albert, Sherwood Park, Spruce Grove, and Leduc, Alberta. Call (780) 232-4973 or email info@marlexroofing.ca for a free, no-obligation estimate. Every project is backed by a 5-year workmanship warranty.