--- title: "Flat Roof Repair in Newmarket, ON | flat-roof-repair.ca" description: "Flat roof leak repair, replacement and maintenance in Newmarket, Ontario, for houses, condos and commercial buildings. Drains and flashings for heavy summer storms." url: https://flat-roof-repair.ca/locations/newmarket/ last_updated: 2026-10-23 --- # Flat roof repair in Newmarket We repair, replace and maintain flat roofs in Newmarket: 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 Newmarket Townhouses and row houses are common in Newmarket, and their flat roof sections often span several units. A leak can start on one unit's section and show up in the home next door. 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/). ## Main Street, Davis Drive and the 404 corridor: Newmarket Newmarket started as a mill settlement on the Holland River. By 1846 it had two grist mills, two breweries, a distillery, a tannery and a foundry, and the railway arrived in 1853. A suburban building boom followed in the 1950s through 1970s, Upper Canada Mall opened in 1974 and pulled commerce away from Main Street, and Highway 404 later drew growth east. Census data show about 30% of homes were built before 1981 and about 30% in 2001 or later. Main Street, a provincially recognized heritage conservation district since 2013, has early commercial buildings and houses where flat roofs over rear additions and shop backs are typical. The Davis Drive axis and the Yonge Street and Davis Drive area, around Upper Canada Mall, hold plazas and stores from the postwar and mall eras, with large low-slope roofs. Southlake Regional Health Centre adds a healthcare cluster. Employers such as Celestica, Magna International and Mars Canada work in commercial and industrial buildings, and the east side toward Highway 404 is mostly newer subdivisions. ## Newmarket 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 Newmarket has to handle. - **undefined** - **undefined** - **undefined** - **undefined** - **undefined** - **undefined** - **undefined** ## Homes and buildings in Newmarket The age and type of buildings shape the flat roofs we see. These are the 2021 Census figures for Newmarket. - **undefined** - **undefined** - **undefined** - **undefined** - **undefined** - **undefined** ## Storms that hit Newmarket - 20 August 2009: A tornado on 20 August 2009 damaged buildings and flipped vehicles in Newmarket. ([source](https://en.wikipedia.org/wiki/2009_Southern_Ontario_tornado_outbreak)) ## Newmarket: facts for property owners - Population of Newmarket: 87,942 (2021 Census). ([source](https://en.wikipedia.org/wiki/List_of_municipalities_in_Ontario)) - Newmarket is part of the Regional Municipality of York. - Town of Newmarket list of work not needing a permit: 'repairs to chimneys, porches, decks or roofs'. Contact building.permits@newmarket.ca if unsure. ([source](https://www.newmarket.ca/business-development/building-renovating)) - Stormwater charge and credit / recognition programs: Town page lists stormwater charge, LID guidance and Stormwater Credit and Recognition Programs; 2026 rate schedule published. ([source](https://www.newmarket.ca/resident-services/stormwater)) > 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 Newmarket | Item | Starting price | |---|---| | [Small leak repair (patch, seam or puncture)](https://flat-roof-repair.ca/services/flat-roof-leak-repair/) | from $350 per repair | | [Flashing repair or replacement](https://flat-roof-repair.ca/services/flashing-and-seam-repair/) | from $500 per repair | | [House flat roof replacement (about 1,000 sq ft)](https://flat-roof-repair.ca/property-types/townhouses-and-row-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 Newmarket - [Townhouses and row houses](https://flat-roof-repair.ca/property-types/townhouses-and-row-houses/) - [Houses](https://flat-roof-repair.ca/property-types/houses/) - [Garages and additions](https://flat-roof-repair.ca/property-types/garages-and-additions/) - [Condo buildings](https://flat-roof-repair.ca/property-types/condo-buildings/) - [All property types](https://flat-roof-repair.ca/property-types/) ## Nearby cities - [Aurora](https://flat-roof-repair.ca/locations/aurora/) - [Richmond Hill](https://flat-roof-repair.ca/locations/richmond-hill/) - [Vaughan](https://flat-roof-repair.ca/locations/vaughan/) - [Greater Toronto Area](https://flat-roof-repair.ca/locations/greater-toronto-area/) ## Flat roofs in Newmarket: questions **How much does flat roof repair cost in Newmarket?** A small leak repair starts from $350 per repair and a new house flat roof starts from $8,000 per roof. Prices in Newmarket depend on access, layers to remove and the membrane. See [pricing](https://flat-roof-repair.ca/pricing/). **Why does my flat roof in Newmarket 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 Newmarket?** Town of Newmarket list of work not needing a permit: 'repairs to chimneys, porches, decks or roofs'. Contact building.permits@newmarket.ca if unsure. 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/). **The leak in my Newmarket townhouse may come from next door. What now?** Send photos of your ceiling and, if you can, of the roof. We check where the water enters, including the joint between units, and tell you whose section it is. See [townhouses and row houses](https://flat-roof-repair.ca/property-types/townhouses-and-row-houses/). **Do you also work near Newmarket?** Yes, including Aurora, Richmond Hill, Vaughan and the rest of the GTA. See [Greater Toronto Area](https://flat-roof-repair.ca/locations/greater-toronto-area/). ## Related - [Flat roof repair in Greater Toronto Area](https://flat-roof-repair.ca/locations/greater-toronto-area/) - [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