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Garage-to-House Walls & Ceilings

Board and sealing on the wall and ceiling between an attached garage and the house, where the Code wants a continuous gas-tight barrier.

No published range: get written quotes Depends on the area and what needs sealing; ask for dates in writing

No range: we found no two independent published prices for garage-wall work.

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About Garage-to-House Walls & Ceilings

The Building Code's rule for an attached garage that serves only your home is a gas barrier, not a fire rating. Where a garage serves only the dwelling it is attached to, it is considered part of that dwelling and the fire separation "need not be provided" (O. Reg. 163/24, 9.10.9.18.(3)). What is required is an air barrier system between the garage and the rest of the house "to provide an effective barrier to gas and exhaust fumes" (9.10.9.18.(4)).

Every door between the garage and the house must be tight-fitting and weather-stripped and have a self-closing device, and it may not open into a room intended for sleeping (9.10.13.15). The Code also says interior finish need not be applied to garage walls (9.35.4.1.(1)).

Many builders use taped and sealed drywall to form that gas barrier; what the Code requires is that the barrier is continuous and its joints and penetrations, such as wiring, boxes, pipes and ducts, are sealed (9.25.3.3). These are Building Code minimums for new work; ask the City how they apply to your renovation.

Changing the door opening between the garage and the house may be permit work (the City's list includes enlarging or relocating a door): ask the City first. We found no two independent published prices for this work, so no range is shown.

What This Work Covers

  • Continuous, sealed barrier between the garage and the house
  • Penetrations (wiring, boxes, pipes, ducts) sealed
  • Door tight-fitting, weather-stripped, self-closing
  • Holes in the garage-side wall and ceiling patched and sealed
  • Permit asked about if the door opening changes

Ready to Get Started?

Tell us about your garage-to-house walls & ceilings job and we'll send it to local drywall contractors in Ottawa. They reply by email.

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