Frame Condition
A sound frame is the strongest argument for repair. Soft wood at the sill, cracked vinyl corners or a frame racked out of square change the math, because new glass or hardware in a failing frame will not stay tight.
4.531 Google reviews
Get your written quote
Fix what works, replace what does not
Window Repair in Kitchener-Waterloo
GTS Windows & Doors has repaired and replaced windows across Waterloo Region since 1986, working from our shop at 47 Bridge Street East in Kitchener's Bridgeport area. Our crews fix foggy sealed units, broken and cracked glass, seized crank operators, sliders that jump their tracks, rotted wood sills, and frames that leak air or water. We are licensed, insured and WSIB covered, so the work in your home or building is done safely and properly.
We work for homeowners, landlords, property managers, general contractors and business owners in Kitchener, Waterloo, Cambridge, Guelph and the surrounding townships. Most calls start with one problem window, such as a crank that spins freely or a pane that has turned cloudy, but we look at the whole unit and its neighbours before we quote. If a repair will buy you years of good service, we say so plainly.
Because we install new windows as well, we have no reason to push a repair that will not last or a replacement you do not need. That balanced window repair and replacement advice, based on four decades of working on local homes and buildings, is what we aim to give every customer. New installations carry our 20-year parts and labour warranty, and we explain the coverage on any repair before the work starts.
- Since 1986Four decades in Waterloo Region
- 20-Year WarrantyParts and labour, in writing
- Licensed & WSIBFully insured crews
- ENERGY STARRated windows and doors
- SAWDAC MemberIndustry association
Repair or Replace? How We Decide
Every repair quote starts with the same four questions. We answer them on site, show you what we found, and give you a price for the fix, plus a ballpark for replacement when it is a close call.
Age and Performance
Windows from the 1990s onward usually have sealed glass and hardware worth fixing. Very old single glazed aluminum or builder-grade units lose so much heat that a repair often just delays a replacement you will still want.
Parts Availability
Operators, rollers, balances and locks follow common industry sizes, so most are still available after the original maker has closed. When a part truly is gone, we look for a compatible substitute before calling the window a loss.
Cost Against Replacement
If the repairs a window needs add up to roughly half the price of a new unit, a full window replacement is usually the better value. Below that, and with a good frame, repair almost always wins.
Glass and Sealed Unit Repairs
Glass is often the first part of a window to fail, and it is usually the easiest to fix. In most cases we replace only the pane or sealed unit and keep your existing frame, which is quicker and far cheaper than a new window.
Broken and Cracked Glass
A stone from a mower, a stray ball or a sharp temperature swing can crack a pane without warning. Our broken glass replacement service covers house windows, door lites and storefronts, including tempered and laminated safety glass.
Foggy Double Pane Glass
Haze or droplets trapped between the panes mean the edge seal has failed and the insulating gas has leaked out. We replace foggy double pane units in the existing sash, often with better Low-E glass than the original.
Triple Pane Glass
Triple glazed units are thicker and much heavier, and a replacement has to match the original build closely. Our triple pane glass replacement page explains how we measure, order and handle them.
Single Pane Glass and Reglazing
Century home sashes, storm windows and older basement windows still hold single panes set in putty. We cut, set and reglaze single pane glass the traditional way, with glazier points and fresh putty.
All Window Repair Services
- Broken Glass ReplacementWindow glass replacement for broken or cracked panes in Kitchener-Waterloo.
- Single Pane GlassSingle pane glass replacement for wood sashes, storm windows, basement windows and garages across Kitchener-Waterloo.
- Foggy Double Pane GlassFoggy window repair in Kitchener-Waterloo: GTS replaces the failed sealed glass unit, keeps your frame and can upgrade you to Low-E glass.
- Triple Pane GlassTriple pane glass replacement in Kitchener-Waterloo.
- Aluminum Frame RepairAluminum window repair in Kitchener-Waterloo: bent frames, corroded slider tracks, leaking corners and window capping fixed by GTS since 1986.
- Vinyl Frame RepairVinyl window repair across Kitchener-Waterloo for cracked corners, warped frames and leaking sills.
- Wood Frame RepairWood window repair in Kitchener-Waterloo: rotted sills and frames fixed with epoxy, spliced-in wood or new sills, with heritage-sensitive restoration by GTS.
- Caulking & SealingWindow caulking in Kitchener-Waterloo done as a trade: the right sealant, backer rod and joint design to stop leaks and drafts for years.
- Lock & Latch RepairWindow crank replacement, lock and latch repair across Kitchener-Waterloo.
- WeatherstrippingWindow weatherstripping replaced across Kitchener-Waterloo.
- Sliding Window RepairSliding window repair in Kitchener-Waterloo for sliders that stick, jump the track or leak.
- Sliding Glass Door RepairSliding glass door repair for patio doors that stick, jump the track or leak.
Frame Repairs
A frame repair makes sense when the damage is local and the rest of the window is sound. The right fix depends entirely on what the frame is made of.
Vinyl Frame Repair
Vinyl can crack at welded corners, lose its glazing beads or warp near a heat source. Our vinyl window repair work covers corner and sash damage, loose beads and seals that have pulled away.
Aluminum Frame Repair
Older aluminum windows suffer from corroded tracks, loose corner joints and heavy winter condensation. We handle aluminum window frame repair in homes and commercial buildings alike.
Wood Frame and Sill Repair
Wood rots where water sits, which is almost always the sill and the bottom rail of the sash. Our wood window frame repair cuts out soft wood, splices in new stock or consolidant, and repaints so the window keeps its character.
Hardware and Operation Repairs
A window that will not open, close or lock is a safety and security problem, not just an annoyance. Most hardware failures are quick fixes once the right part is identified.
- Crank operators: Stripped gears and bent arms are common on casement and awning windows. Window crank replacement usually takes well under an hour once we have a matching operator.
- Locks and latches: Multipoint locks, cam latches and keepers wear out or drift out of adjustment. Our window lock and latch repair restores a tight, secure close.
- Horizontal sliders: Worn rollers, bent tracks and flattened pile seals cause sticking and drafts, all covered under sliding window repair.
- Hung windows: Broken block and tackle or spiral balances let sashes drop or refuse to stay open. We replace balances and tilt latches on single and double hung windows.
- Hinges: Casement hinges that sag or bind stop the sash from pressing evenly against its weatherstrip.
- Patio doors: Dragging rollers and loose handles follow the same logic on a heavier scale, as explained on our sliding glass door repair page.
Drafts, Leaks and Seals
Air and water get in at one of two places: between the window and the wall, or between the sash and the frame. Telling them apart decides the fix.
Here is a simple check for a windy day. Close and lock the window, then move a lit incense stick slowly around the edges and watch the smoke. If it moves along the sash where it meets the frame, the weatherstrip is failing; if it moves around the outer frame or trim, the caulking or insulation behind it is the problem.
Gaps where the window meets the wall call for window caulking and sealing with a sealant suited to the siding and the season. Leaks along the moving sash call for new window weatherstripping matched to the profile the window was built with.
What Window Repairs Cost
These are typical installed ranges for common repairs in Waterloo Region in 2026. Your price depends on the window's size and height, the exact part or glass needed, and how many windows we fix in the same visit.
A repair stops making sense when the frame itself is failing, when several problems stack up on one window, or when the combined cost nears half the price of a new unit. For full replacement pricing, see our Kitchener window and door cost guide.
| Repair | Typical price per window | What moves the price |
|---|---|---|
| Crank operator replacement | $125 to $275 | Operator style, availability, hinge wear |
| Lock or latch replacement | $90 to $225 | Single latch or multipoint system |
| Slider rollers and track repair | $150 to $350 | Roller type, track damage |
| Hung window balance replacement | $175 to $375 | Balance type, sash size |
| Foggy double pane sealed unit | $250 to $750 | Size, Low-E and gas, tempering |
| Triple pane sealed unit | $400 to $1,200 | Size, weight, glass specification |
| Single pane reglazing | $150 to $450 per sash | Number of lites, putty removal, glass type |
| Wood sill or sash rot repair | $300 to $1,200 | Extent of rot, paint finish |
| Exterior recaulking | $125 to $350 | Window size, old sealant removal, height |
| Weatherstripping replacement | $100 to $250 | Profile, number of sashes |
Window Repair FAQs
Is it worth repairing old windows?
Often, yes, when the frame is solid and the problem is limited to glass, hardware or seals. It is rarely worth it on single glazed aluminum windows or frames with widespread rot, because the heat loss stays. Our guide on when to replace windows walks through the warning signs in more detail.
Do you repair windows from any manufacturer?
We repair most residential and commercial windows regardless of who made them, including brands that are no longer in business. Operators, rollers, balances and sealed units are built to common sizes, so we can usually source a match or a compatible substitute. If a part is truly unavailable, we tell you before any work starts.
Can windows be repaired in winter?
Most repairs work year round, including glass and sealed unit replacement, hardware and balance repairs, and interior weatherstripping. Exterior caulking and paint-dependent wood repairs are better left for spring or fall, because many sealants and paints need dry surfaces and mild temperatures to cure. When glass is out in cold weather, we keep the opening covered to limit heat loss.
Book a Window Repair
Tell us what is wrong and include a few photos of the window, plus any label or spacer stamp you can find. Photos help us identify parts and quote your repair faster.
Call or text226-806-0597- Monday to Saturday: 7:00am to 9:00pm
Sunday: 9:00am to 5:00pm - 47 Bridge Street East, Kitchener, ON N2K 1J7