---
title: "Flat Roof Repair FAQ | flat-roof-repair.ca"
description: "Answers to common questions about flat roof leaks, repairs, replacement, materials, winter work, prices and how to request a quote in Ontario."
url: https://flat-roof-repair.ca/faq/
last_updated: 2026-10-23
---

# Flat roof questions

Short answers to what owners and property managers ask before calling a roofer. If yours is missing, add it to your quote request.

## Leaks and repairs

**Where is my flat roof leaking from?**

Often not right above the stain. Water travels under the membrane and along the deck. See [finding a flat roof leak](https://flat-roof-repair.ca/guides/finding-a-flat-roof-leak/).

**What should I do while I wait for a repair?**

Catch the water, move valuables, take photos and keep off the roof. See [urgent flat roof repair](https://flat-roof-repair.ca/services/emergency-flat-roof-repair/).

**Is standing water on a flat roof normal?**

Small puddles that dry within about two days are common. Water that stays longer wears the roof faster. See [ponding water](https://flat-roof-repair.ca/problems/ponding-water/).

**Can one repair fix a roof that leaks in several places?**

Usually not. Several leaks at once often mean the membrane is at the end of its life. See [repair or replace](https://flat-roof-repair.ca/guides/repair-or-replace-flat-roof/).

## Replacement and materials

**Which flat roof material is best for a house?**

Modified bitumen and EPDM are the most common on Ontario houses; TPO and PVC are common on larger buildings. See [choosing a material](https://flat-roof-repair.ca/guides/choosing-a-flat-roof-material/).

**How long does a flat roof last?**

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](https://flat-roof-repair.ca/guides/how-long-does-a-flat-roof-last/).

**Do I need a permit to replace a flat roof?**

Rules differ by municipality and by what changes. Check with your local building department. See [re-roofing permits in Ontario](https://flat-roof-repair.ca/guides/re-roofing-permits-ontario/).

**Can you replace a flat roof in winter?**

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](https://flat-roof-repair.ca/guides/flat-roof-in-winter/).

## Quotes and prices

**How much does a new flat roof cost?**

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](https://flat-roof-repair.ca/pricing/).

**Can you quote from photos?**

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

**Do you work for condo boards and property managers?**

Yes. See [condo buildings](https://flat-roof-repair.ca/property-types/condo-buildings/) and [planning a condo roof project](https://flat-roof-repair.ca/guides/condo-roof-planning/).

**Do you install shingles or eavestroughs?**

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

## Related

- [Flat roof prices](https://flat-roof-repair.ca/pricing/)
- [Flat roof guides](https://flat-roof-repair.ca/guides/)
- [Common flat roof problems](https://flat-roof-repair.ca/problems/)

---

Get a quote: https://flat-roof-repair.ca/request-a-quote/ · Email: info@flat-roof-repair.ca