Flat roof contractors by city

About flat and low-slope roofs

Flat and low-slope roofs do not shed water the way a pitched roof does, so the membrane and its seams do all the work. The common choices are TPO and PVC single-ply membranes, EPDM rubber, modified bitumen, and coatings that extend the life of a sound roof. Ponding water, blocked drains and failed seams cause most leaks. A flat roof needs a look every year or two.

Cost. Flat roof: about $3 to $11 a square foot installed, with materials and labor. This is a national range from HomeGuide, November 2025. Work out the cost for your roof size.

What to ask

• Which membrane do you recommend for my roof, and why?
• How will you deal with ponding water and the drains?
• Are the seams heat-welded or glued, and how long is the seam warranty?
• Can the existing roof be coated instead of replaced?

Our guides

• Roof repair or replacement: how to decide
• How much does a new roof cost?

Flat and low-slope roofs by city

Each city page lists the local roofers that show flat and low-slope roofs on their website. The number is how many firms that page lists.