Window Replacement near you

A fogged sealed unit doesn't automatically call for a new window. Natural Resources Canada's guide to upgrading windows notes that when the seal of a double-glazed unit fails, the problem is best corrected by replacing the glazing unit, and a glazier can usually order a new thermos to size and fit it in the existing sash. Worn cranks, hinges, balances and weatherstripping can also be replaced on many windows.

The same guide suggests it may be time to replace the whole window when the frame is in poor condition. Replacement also makes sense when problems pile up, such as failed seals on several units, rotten sills and hardware that can no longer be found, or when the old window is single-glazed and the goal is a real gain in comfort.

With an insert, sometimes called a retrofit, the old sash and hardware come out and a complete new window is set inside the existing frame. It barely disturbs the interior trim or the exterior siding, goes quickly and, according to Natural Resources Canada, can be a good option for heritage homes. It only works if the existing frame hasn't deteriorated, and because the new frame sits inside the old one, the glass area shrinks a little.

A full-frame replacement, or complete tear-out, removes everything down to the rough opening. It involves more labour and new trim, but it lets the installer inspect the framing, fix hidden rot and properly air-seal and insulate the gap between the window and the wall, a benefit NRCan points to for this approach. It is also the only route when you want to change the size or style of an opening.

Frame material affects upkeep, looks and how the window copes with Canada's temperature swings. Natural Resources Canada notes that while aluminum conducts heat more than non-metals, a window's overall energy efficiency depends more on the design of the product, so compare certified ratings rather than assuming one material always wins.

Replacement windows sold as ENERGY STAR certified in Canada meet Natural Resources Canada's national criteria, and NRCan also recognizes ENERGY STAR Most Efficient windows and sliding glass doors, the top performers among certified models. The label on each unit lists its ratings, so you can compare quotes on the same basis and check that the model on the invoice is the one you were quoted.

Incentive programs for windows come and go, and their conditions change often. Some are run by provinces, others by utilities or municipalities, and many ask for an energy evaluation before the work, certified products or a registered contractor. Natural Resources Canada keeps a directory of energy efficiency programs across the country; check what is open where you live and read the conditions before you sign or order, since removing the old windows too soon can make a project ineligible.

Building codes generally require bedrooms, including those in basements, to have a window or another way out that a person can use to escape a fire, with rules on the size of the opening and how it opens. A replacement can break that rule without anyone noticing: an insert makes the opening smaller, and a sliding window offers less clear space than a casement of the same size. Check with your municipality before choosing the style of a bedroom window, especially in a basement or an older house.

Beyond egress, a permit may be needed when the size or position of an opening changes or when the facade is in a heritage area. In a condominium, check the declaration first, since windows are often treated as common property and the board's approval may be required.