Whitby · Durham Region
Window and glass help for Whitby homes
Whitby's houses are much younger than Oshawa's. Most went up after 1980, with the busiest years in the 1990s and early 2000s, which puts a lot of the town at the age when sealed units fog and patio doors drag. We connect Whitby homeowners with independent local pros for home window glass, patio doors and screens, once we've checked that one covers your postal code.
At a glance
- Housing
- Mostly subdivisions from the 1980s on, busiest in the 1990s and early 2000s
- Common jobs
- Fogged sealed units, patio-door rollers, cranks, screens
- Heritage
- Two districts: Werden's Plan and Brooklin
- Permits
- Town of Whitby
Whitby's housing: mostly 1990s and 2000s subdivisions
Downtown Whitby dates to 1836, but most of the town is subdivision housing that has spread mostly northward since the mid-1990s. Far fewer of its homes predate the 1980s than Oshawa's. The same pattern runs through Ajax, next door.
That changes the work. In Oshawa the typical job is keeping an older window weather-tight. In Whitby it's usually the first real repair on the original windows and doors: fogged glass, flattened rollers, a crank that spins. Those are parts, and parts can be replaced.
Fogged sealed units and tired patio doors
Start with a wipe test. Moisture you can wipe off the room side is condensation. Haze you can't reach means the seal around the sealed unit, the double-pane glass inside the frame, has let moist air in. Three fixes are worth pricing side by side:
- Defogging: clears the view in a sound unit. Ask what it restores and what it doesn't.
- A new sealed unit: the usual fix when the frame is fine. It's made to measure, so fitting comes after a wait.
- A new window: when the frame is cracked or the sash won't close. See replacement windows.
The foggy window page goes deeper. Patio doors from the same era wear too, and one that drags or won't lock is usually a sliding door repair, not a new door.
Heritage districts and permits: ask the Town of Whitby
Whitby has two heritage conservation districts, Werden's Plan Neighbourhood and Brooklin, and the Town adopted updated plans for both in May 2026. In either district, and on any individually designated property, changes need a heritage permit, which carries no fee. Ask the Town's heritage staff about window rules before anything is ordered.
For building permits, Oshawa's rules don't cross the town line. Whether it's a same-size swap or a changed opening, check with the Town of Whitby first.
Durham Greener Homes and energy upgrades
The Region's Durham Greener Homes program offers a free Weather-Ready Home Assessment and a low-interest loan, and Whitby residents can get an extra top-up for deeper retrofits. The upgrades it names are insulation, air sealing and heat pumps. Whether windows qualify isn't confirmed, so ask the program's coach before you plan around it.
The provincial Home Renovation Savings Program has a rebate for whole ENERGY STAR certified windows and doors, generally alongside a home energy assessment. A new sealed unit in an old frame doesn't count. If a rebate is part of the plan, say so before the pro quotes.
Getting a quote in Whitby
Send a photo of the whole window or door, a close-up of the damage, and your Whitby postal code. We check that a pro takes that job at your address, pass the request on, and follow up if it goes quiet; if nobody covers your street, we'll say so. Sealed units are made to order, so the new glass usually goes in on a second visit. Start a Whitby request.
Whitby questions
Can a fogged window in a Whitby home be fixed without replacing it?
Usually. If the frame and sash are sound, the pro can replace just the sealed unit and keep the window, trim and finish as they are. Defogging is another option for some units. A whole new window makes more sense when the frame is cracked or the window won't close and lock. The foggy window page compares the three.
Why are so many windows in 1990s and 2000s subdivisions fogging now?
Mostly age. A sealed unit's edge seal flexes with every swing in temperature, sun and season, and after enough years many let moist air in. Whitby built a lot of homes in the 1990s and early 2000s, so plenty of original units are reaching that point around the same time. One fogged unit doesn't mean the rest will go at once.
Do I need a Town of Whitby permit for same-size windows?
Check with the Town of Whitby before you order. Each Durham municipality sets its own permit rules, and Oshawa's exemption doesn't apply here. If your home is in the Brooklin or Werden's Plan heritage district, or is individually designated, a heritage permit applies as well. Ask the pro quoting the job to note what applies.
Can patio door rollers be replaced in a 1990s home?
Usually, yes. Worn rollers are a common reason a sliding door drags, and most can be replaced once the panel is lifted out. The track may need cleaning or repair at the same time. If exact parts are hard to find, the pro can say whether a close match will work. Sliding door repair covers other faults.
Does Whitby's extra Greener Homes top-up cover windows?
That isn't confirmed. Durham Greener Homes names insulation, air sealing and heat pumps as eligible upgrades, and Whitby residents can get an extra top-up for deeper retrofits. Whether windows qualify is a question for the program's coach before you plan around it. The provincial rebate for whole ENERGY STAR windows is separate, and a glass-only swap doesn't qualify for that one either.