The Room Over The Garage Is Cold For A Reason
The bonus room above a two-car garage in West Ridge or Westmount has a floor over unheated space, usually a cantilevered front wall, and the longest duct run in the house. Cold air moves through the garage ceiling and around the joist ends all winter. Closed cell spray foam insulation sprayed to the underside of that ceiling, with the joist ends and the cantilever sealed, brings the room to the same temperature as the rest of the second floor. It also stops exhaust and gasoline vapour from moving up into the bedroom, which matters more than the comfort.
The Shared Wall And The Mudroom
The wall between the garage and the house is usually framed like an interior wall with a batt pushed into it. Air moves through it freely, and the mudroom, the laundry room or the kitchen on the other side pays for it. Foam in that wall seals the air path and insulates it properly. Where the wall is already drywalled on the garage side and staying that way, we look at the rim joist and the ceiling first, because that is usually where most of the leak is.
Spray Foam Insulation For Detached Garages, Workshops And Sheds
A detached garage on a city lot or a shop out in Oro-Medonte becomes a heated space once its walls and roof are sprayed. Closed cell spray foam insulation goes directly onto the sheathing between the studs and the rafters, stiffens the building and seals it in the same pass. Two inches on the walls and three on the roof deck is a common spec; the quote states the thickness we recommend and the covering that Ontario's code requires over foam in an occupied space.
The Garage Door Is Not Our Product, But We Will Mention It
An insulated garage with an uninsulated door still leaks most of its heat through the door. We do not sell doors. We will tell you honestly whether the door is the bigger problem before you spend money on the walls, and price the walls anyway so you have the number when you are ready.