--- title: "Flat Roof Repair in North Bay, ON | flat-roof-repair.ca" description: "Flat roof leak repair, replacement and maintenance in North Bay, Ontario, for houses, condos and commercial buildings. Drains and flashings for heavy summer storms." url: https://flat-roof-repair.ca/locations/north-bay/ last_updated: 2026-10-23 --- # Flat roof repair in North Bay We repair, replace and maintain flat roofs in North Bay: houses, garages and additions, condo and apartment buildings, plazas, offices and warehouses. Send photos and a few details for a written quote. ## Flat roof services in North Bay Much of North Bay's housing is older, and older houses often have flat roofs over rear additions, porches and garages. Typical signs are a stain on the kitchen ceiling, water at a skylight or a roof with several worn layers. North Bay has one of the ten heaviest design snow loads of the 40 cities on this site, so drains and parapet flashings get extra attention. We find where the water gets in, fix that spot and tell you how much life the rest of the roof has. When a roof is past repair, we [replace it](https://flat-roof-repair.ca/services/flat-roof-replacement/) with EPDM, TPO, PVC or modified bitumen, and fix the [drainage](https://flat-roof-repair.ca/services/roof-drains-and-scuppers/) so water does not sit on the new membrane. Owners and property managers also book [inspections](https://flat-roof-repair.ca/services/flat-roof-inspection/) and [maintenance visits](https://flat-roof-repair.ca/services/flat-roof-maintenance/). ## Railway, air base and lakefront in North Bay North Bay grew after the Canadian Pacific Railway arrived in 1882 and became the southern end of the Temiskaming and Northern Ontario Railway in 1902. The Royal Canadian Air Force base opened in 1951, and NORAD's underground centre followed in 1963. The city amalgamated with West Ferris and Widdifield in 1968. Census data shows about 70% of homes were built before 1981, and only about 8% from 2001 on. Because so much of the housing was built in the railway and Cold War decades, older bungalows with flat-roofed additions and attached garages are common in neighbourhoods like West Ferris. Downtown Main Street has commercial buildings with parapets. The West Ferris Industrial Park and the airport area have large low-slope industrial roofs, and the base brought hangars and utility buildings. Nipissing University and Canadore College also contribute institutional roofs. ## North Bay weather and your flat roof Ontario's Building Code sets the climate values used to design roofs in each municipality. They show what a flat roof in North Bay has to handle. - **undefined** - **undefined** - **undefined** - **undefined** - **undefined** - **undefined** - **undefined** ## Homes and buildings in North Bay The age and type of buildings shape the flat roofs we see. These are the 2021 Census figures for North Bay. - **undefined** - **undefined** - **undefined** - **undefined** - **undefined** - **undefined** ## North Bay: facts for property owners - Population of North Bay: 52,662 (2021 Census). ([source](https://en.wikipedia.org/wiki/List_of_municipalities_in_Ontario)) - City exemptions include 'Replacing roofing or shingles'. ([source](https://northbay.ca/services-payments/building-development/building-permits/when-a-building-permit-is-required/)) > Before summer storm season, look at the drains and scuppers on your roof from a safe spot or in photos. Leaves and grit in a drain basket are the most common cause of water backing up under flashings. ## Starting prices in North Bay | Item | Starting price | |---|---| | [Small leak repair (patch, seam or puncture)](https://flat-roof-repair.ca/services/flat-roof-leak-repair/) | from $350 per repair | | [Small flat roof replacement (garage, porch or addition)](https://flat-roof-repair.ca/property-types/garages-and-additions/) | from $4,000 per roof | | [House flat roof replacement (about 1,000 sq ft)](https://flat-roof-repair.ca/property-types/houses/) | from $8,000 per roof | Starting prices in CAD before 13% HST, based on typical Ontario contractor rates (mostly Toronto and the GTA). The final price depends on roof size, access, the layers to remove, the membrane, drains and flashings, and is confirmed in your written quote. See all [prices](https://flat-roof-repair.ca/pricing/). ## Roofs we work on in North Bay - [Garages and additions](https://flat-roof-repair.ca/property-types/garages-and-additions/) - [Apartment buildings](https://flat-roof-repair.ca/property-types/apartment-buildings/) - [Houses](https://flat-roof-repair.ca/property-types/houses/) - [Townhouses and row houses](https://flat-roof-repair.ca/property-types/townhouses-and-row-houses/) - [All property types](https://flat-roof-repair.ca/property-types/) ## Nearby cities - [Sudbury](https://flat-roof-repair.ca/locations/sudbury/) - [Orillia](https://flat-roof-repair.ca/locations/orillia/) - [Barrie](https://flat-roof-repair.ca/locations/barrie/) - [Northern Ontario](https://flat-roof-repair.ca/locations/northern-ontario/) ## Flat roofs in North Bay: questions **How much does flat roof repair cost in North Bay?** A small leak repair starts from $350 per repair and a new house flat roof starts from $8,000 per roof. Prices in North Bay depend on access, layers to remove and the membrane. See [pricing](https://flat-roof-repair.ca/pricing/). **Why does my flat roof in North Bay leak in late winter?** Melting snow refreezes at drains and edges overnight, then backs up under seams and flashings during the day. See [ice and snow damage](https://flat-roof-repair.ca/problems/ice-and-snow-damage/). **Do I need a permit to replace a flat roof in North Bay?** City exemptions include 'Replacing roofing or shingles'. That wording is about shingles, so ask how it applies to a flat roof membrane. Rules can change, so confirm with the building department before you start. See [re-roofing permits in Ontario](https://flat-roof-repair.ca/guides/re-roofing-permits-ontario/). **My North Bay house is older. Can the flat roof go on over the old one?** Sometimes one new layer can go over one old layer, but on older houses we often find two or three layers already, wet insulation or soft deck boards. Then a full tear-off is the safer choice. See [repair or replace](https://flat-roof-repair.ca/guides/repair-or-replace-flat-roof/). **Do you also work near North Bay?** Yes, including Sudbury, Orillia, Barrie and the rest of northern Ontario. See [Northern Ontario](https://flat-roof-repair.ca/locations/northern-ontario/). ## Related - [Flat roof repair in Northern Ontario](https://flat-roof-repair.ca/locations/northern-ontario/) - [Flat roof leak repair](https://flat-roof-repair.ca/services/flat-roof-leak-repair/) - [Flat roof replacement](https://flat-roof-repair.ca/services/flat-roof-replacement/) - [Finding a flat roof leak](https://flat-roof-repair.ca/guides/finding-a-flat-roof-leak/) --- Get a quote: https://flat-roof-repair.ca/request-a-quote/ ยท Email: info@flat-roof-repair.ca