Flat roof questions

Often not right above the stain. Water travels under the membrane and along the deck. See finding a flat roof leak.

Catch the water, move valuables, take photos and keep off the roof. See urgent flat roof repair.

Small puddles that dry within about two days are common. Water that stays longer wears the roof faster. See ponding water.

Usually not. Several leaks at once often mean the membrane is at the end of its life. See repair or replace.

Modified bitumen and EPDM are the most common on Ontario houses; TPO and PVC are common on larger buildings. See choosing a material.

It depends on the membrane and the care it gets: EPDM commonly 20 to 30 years, modified bitumen 15 to 25 years. See how long a flat roof lasts.

Rules differ by municipality and by what changes. Check with your local building department. See re-roofing permits in Ontario.

Some work can be done in dry, cold weather with the right products, but many replacements wait for spring. Repairs and temporary protection happen all year. See flat roofs in winter.

A house roof of about 1,000 sq ft starts from $8,000 per roof; commercial roofs start from $8 per sq ft. See pricing.

Often for small repairs. For replacements and commercial roofs we visit the roof first.

Yes. See condo buildings and planning a condo roof project.

No. We work on flat and low-slope roofs only: membranes, coatings, drains, flashings, skylights and rooftop decks.