Steel Entry Doors
A galvanized steel skin over a foamed-in polyurethane core gives strong security and insulation for the lowest price of the three. Our steel entry doors page explains skin gauge, thermal breaks and how to avoid dents and rust.

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Entry, patio and screen doors fitted since 1986
GTS Windows & Doors has installed exterior doors across Kitchener-Waterloo since 1986, working from our base at 47 Bridge Street East in Bridgeport. We replace front doors, patio doors, French doors and screen doors for homeowners, landlords, property managers, general contractors and custom builders. We are licensed, insured, WSIB covered and a SAWDAC member, with a 4.5-star rating from 31 Google reviews.
A door is a moving part set into an insulated wall, so the installation matters as much as the product you pick. We set each unit on a sloped sill pan, shim it plumb at the hinges and lock, seal it to the house air barrier and adjust the sweep until it closes without drafts or rubbing. That work is backed by our 20-year parts and labour warranty, and we offer ENERGY STAR rated door systems for owners chasing lower heating bills.
This page is the starting point for every residential door we install, from insulated steel and fibreglass entry systems to hinged garden doors and retractable screens. For storefronts, hollow metal frames and other business entrances, visit our commercial windows and doors section instead. We serve Kitchener, Waterloo, Cambridge, Guelph, Elmira, New Hamburg and the rest of the area within about 45 minutes of Bridgeport.
Your front door takes more abuse than any other part of the building envelope: slamming, full sun, road salt and wind-driven snow. Our entry door replacement service covers the whole job, from removing the old frame and sill to fitting sidelights, transoms and multi-point locks.
Most homes are best served by a pre-hung unit with a new frame and sill. The three main slab materials each suit a different house, budget and exposure.
A galvanized steel skin over a foamed-in polyurethane core gives strong security and insulation for the lowest price of the three. Our steel entry doors page explains skin gauge, thermal breaks and how to avoid dents and rust.
Compression-moulded fibreglass skins shrug off dents, rust and freeze-thaw swelling, and woodgrain versions take stain convincingly. See fibreglass entry doors for smooth versus woodgrain skins and finishing.
Mahogany, fir and oak doors suit century homes and custom builds where a moulded skin would look out of place. Learn how we protect them on our wood entry doors page.
Patio doors connect kitchens and family rooms to decks and walkouts, and they carry the largest area of glass in most houses. We install both sliding and hinged patio doors with low-E glass, insulated frames and a flashed sill that sheds water away from the subfloor.
The choice between the two usually comes down to floor space, how wide you want the opening, and how the door will be used in winter.
Sliders need no swing space, which suits tight kitchens, condos and furniture placed close to the door. Our sliding patio door installation service replaces worn, drafty units with tighter, easier-rolling doors.
Hinged doors open wider and close against compression weatherstrip, so they usually seal tighter than a slider. Read about French and garden doors for swing direction, astragals and slider conversions.
A good screen door lets you run the house on cross breezes in June without inviting mosquitoes in. We fit hinged screen doors, retractable screens for French doors, replacement patio screens and combination storm doors through our screen and storm door service.
One caution: a glass storm door over a sun-facing entry door can trap enough heat to warp the slab or bake its finish. We check the colour, material and exposure of your door before recommending glass.

Not every door problem needs a new door. A slider that drags, a French door that will not latch or a front door with daylight under the sweep can often be fixed with hinge adjustments, a relocated strike, a new sweep or fresh weatherstripping.
For patio units, our sliding glass door repair service replaces rollers, tracks, handles and locks. If the frame is rotted or the glass has fogged, we will tell you honestly when repair money is better spent on replacement.

All three entry door materials can perform well for decades when they are installed properly. This comparison shows where each one leads and where it asks something of you.
| Factor | Steel | Fibreglass | Wood |
|---|---|---|---|
| Security | Strong skin; frame and lock decide the outcome | Equal to steel with the same frame and lock | Heavy and solid; needs a reinforced strike |
| Insulation | Very good with a polyurethane core | Very good with a polyurethane core | Lower, better with an engineered insulated core |
| Weather and impact | Can dent; rusts where the coating is broken | Resists dents, rust and swelling | Moves with humidity; needs cover from sun and rain |
| Maintenance | Touch up chips; repaint as the finish fades | Renew the clear topcoat on stained doors every 2 to 4 years | Refinish every 1 to 5 years depending on exposure |
| Typical installed price, single door | $2,000 to $3,800 | $2,800 to $5,000 | $4,500 to $9,500 |
| Typical lifespan | 20 to 30 years | 30 years or more | 30 years or more with regular refinishing |
These are typical 2026 installed ranges for Waterloo Region, including removal, installation, insulation, interior casing and disposal. Your written quote will reflect your exact opening, product and finish.
For more detail, including how door prices compare with window replacement and which quote line items are worth questioning, see our Kitchener window and door cost guide.
| Door type | Typical installed price |
|---|---|
| Slab only, fitted to an existing frame | $900 to $2,200 |
| Steel pre-hung entry door, single | $2,000 to $3,800 |
| Fibreglass pre-hung entry door, single | $2,800 to $5,000 |
| Steel or fibreglass entry door with one or two sidelights | $3,500 to $9,000 |
| Wood entry door, single | $4,500 to $9,500 |
| Garden door, one operating panel | $3,500 to $6,000 |
| French door, 5 to 6 feet wide | $4,000 to $8,500 |
| Hinged screen door | $450 to $1,000 |
| Combination storm door | $800 to $1,800 |
A slab swap only works when the existing frame is square, the sill is solid and the new slab can be machined to match the old hinge and lock positions. Many doors in 1970s to 1990s Waterloo Region homes have soft sills or worn jamb weatherstrip, and a slab swap leaves those problems in place. We check the frame with a level and probe the sill before recommending either option.
A single pre-hung entry door is usually removed, installed, insulated and trimmed in half a day to a full day. Doors with sidelights, rot repairs or new exterior capping can take a full day or a little longer. Factory lead time before install day is typically 2 to 8 weeks, depending on size, glass and finish.
Yes, we install doors year-round. The old door stays in place until the new unit is on site and checked, and the opening is typically exposed for well under an hour while the new frame is set. We use cold-weather sealants and foam and keep interior doors closed to limit heat loss.
An insulated fibreglass or steel door with a polyurethane foam core, compression weatherstrip, an adjustable sill and a tight sweep will outperform a typical wood door by a wide margin. Look for an ENERGY STAR certified model, low-E glass in any lites, and only as much glass as you need. The rating only holds if the frame is installed square and air sealed to the wall.
Tell us which door you want to replace and we will book an on-site measure, check the frame and sill, and send a written quote with options in steel, fibreglass or wood.
Call or text226-806-0597