One form → quotes from all 3 top Yellowknife companies
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Commercial NDS
- Window replacement and installation
- New-construction window installation
- Casement windows
- Single- and double-hung windows
- Sliding windows
- Patio windows and doors
- Egress windows
- Bay and bow windows
- Fixed windows
- Custom-size windows
- Exterior door installation
- Sill replacement and window waterproofing
- Exterior cladding and siding (vinyl, metal, composite)
- General contracting and renovations
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All-West Glass Yellowknife Ltd
- Vinyl, wood and metal-clad wood replacement windows
- Casement, awning and single/double-hung windows
- Bay and specialty-shape windows
- Low-E, UV-protective and condensation-resistant insulated glazing
- Sealed/thermal unit replacement for failed and fogged glass
- Window repair for cracked glass, broken seals and warped frames
- Interior and exterior door supply and installation
- Door hardware service and maintenance
- Custom glass fabrication and cut-to-size glass
- Frameless and framed glass shower doors
- Commercial storefront and curtain wall glazing
- Auto glass: windshield replacement and rock chip repair
Aurora Windows and Doors Ltd.
- Residential window supply and installation
- Commercial window supply and installation
- PVC / vinyl windows
- Window repair
- Sealed unit (insulated glass) replacement
- Window and door hardware replacement
- Exterior and interior doors
- Wood doors
- Garden doors
- Glass and glazing
- Free estimates
Windows & Doors in Yellowknife: A Local Buyer's Guide
Almost nothing in Yellowknife sits on a poured basement — the city is built on Precambrian Shield bedrock and discontinuous permafrost, so houses stand on steel piles socketed into rock, on wood cribbing, or on space frames, and a good number get re-shimmed to level every few years. That movement is why window work here is its own trade: openings drift out of square, old sashes bind, and a retrofit insert dropped into a racked frame will leak air within a season. Add a housing stock dominated by the post-1967 capital-designation boom (Frame Lake South went up mostly between the late 1970s and late 1980s) and by owner-built 1930s–40s cabins in Old Town, and you get thousands of homes whose windows are now 30 to 80 years old.
🌡️ Climate & what to buy
Yellowknife's January mean is roughly -25.6°C, most winter nights fall below -30°C, and the record low is -51.2°C — so the number that matters most here is the whole-window U-factor, because heat loss scales directly with the indoor-outdoor gap and that gap is enormous for eight months. Aim past the base ENERGY STAR level (U 1.22 W/m²·K or ER 34) toward the Most Efficient tier at U 1.05 or ER 40; the difference shows up as warm glass edges instead of the ice buildup that rots sills in older Yellowknife homes. Second priority is the frame's behaviour in the cold: pultruded fibreglass moves at close to the same rate as the glass it holds, while rigid PVC expands and contracts far more and gets brittle near -40°C, which is hard on corner welds and on sealant joints that cycle through 70-plus degrees of annual swing. Choose casements and awnings over sliders wherever you can — a compression gasket that pulls tight against the frame outperforms a brush-sealed slide track both at -40°C and during the August wildfire-smoke episodes that have become routine since the 2023 territory-wide evacuation. Krypton fill is worth pricing in triple-glazed units, since it outperforms argon in the narrow cavities triple glazing forces, and specify a warm-edge spacer for condensation control rather than aluminum. Finally, budget for the install detail, not just the unit: low-expansion foam and most sealants have minimum application temperatures around -5°C to -10°C, so a January install that skips proper perimeter sealing will undo the glazing package you paid for.
📋 Permits & bylaws
Permitting runs through the City of Yellowknife's Planning and Development division (867-920-5600; applications via the CityView portal). The City enforces Building By-law No. 5058 and adopted the 2020 National Building Code and National Energy Code for Buildings by by-law on 30 May 2022, which brings NBC Section 9.36 energy requirements into force for houses. In practice, swapping windows or doors like-for-like into existing openings with no change to the rough opening is not treated as a permitted structural alteration; cutting a new opening, widening or lowering an existing one, converting a window to a patio door, or altering a header or load-bearing wall is a structural change and does require a building permit. Two local traps: bedroom windows must still meet NBC 9.9.10 egress dimensions after the swap — easy to fail when a thicker triple-glazed frame shrinks the clear opening — and anything that projects beyond the existing envelope (a bay, a new entry vestibule) can trigger a development permit under Zoning By-law No. 4404, which matters most on the tight, irregular lots of Old Town and Latham Island. Yellowknife has no blanket heritage conservation district: heritage protection applies to individually designated properties by by-law (the Wildcat Café, built 1937, was designated a heritage site by Council in 1992), with the Heritage Committee advising Council. If your property is designated or you are near the waterfront, call the City before ordering, not after.
💰 Rebates & incentives
Treat all of the following as commonly available — verify current details and intake dates before you order. The Arctic Energy Alliance (867-920-3333 or 1-877-755-5855, aea.nt.ca) is the territorial delivery agent and the first call to make; it funds EnerGuide home energy evaluations and building-envelope rebates, and its programs reset on a 1 April to 31 March fiscal year, with rebate amounts revised for 2026/27 and hydro and non-hydro community rates now largely aligned. Envelope rebates typically require the pre-retrofit evaluation first, so book it before any deposit is paid. Housing NWT runs homeowner repair programs with an annual intake window that has recently run 1 April to 31 October, including a Seniors Home Repair forgivable loan of up to $50,000 for major repairs, subject to community-specific income thresholds. Federally, the Canada Greener Homes Affordability Program delivers no-cost envelope retrofits to lower- and median-income households through provincial and territorial delivery partners, and the Canada Greener Homes Loan remains the interest-free financing route for larger retrofits — confirm NWT delivery status with AEA, since territorial partner listings have lagged the provinces. One quiet local advantage: the NWT levies no territorial sales tax, so quotes carry only 5% GST rather than the 12–15% combined rates common in the south.
📅 Best time to install
The binding constraint in Yellowknife is not weather, it is the supply chain and the size of the local installer pool. Virtually every window sold here is built in southern Canada and trucked about 1,500 km up the Mackenzie Highway and Highway 3 — reliable year-round since the Deh Cho Bridge opened on 30 November 2012 ended the Fort Providence ferry and ice-crossing gap, but still a two-to-three-week freight leg on top of manufacturing. Order in January or February to be installed in the May-to-August window, when sealants cure properly and the small number of local crews are still taking bookings; by April the good installers are typically committed through freeze-up. Local contractors will work later than most people expect — April through December is the commonly quoted cost-effective range, with year-round work possible using tenting and heat at a premium. Do the measure in late winter if you can: that is when a pile- or crib-supported house sits at its most heaved position, and ordering to those dimensions avoids a spring surprise. If you are only doing part of the house, take the north and west elevations first — they carry the prevailing winter wind and the worst frost buildup.
Serving neighbourhoods across Yellowknife: Old Town and Latham Island — the original 1930s–40s townsite on bare rock, from owner-built cabins in Willow Flats and the Woodyard to waterfront custom homes; irregular lots, non-standard openings, and the highest odds of heritage or zoning involvement · Downtown and School Draw — mid-century walk-ups, row housing and the city's older apartment stock, much of it built in the two decades after Yellowknife became territorial capital in 1967 · Frame Lake South — the late-1970s-to-late-1980s public-sector expansion; large stretches of same-vintage single-family homes, which means neighbours are hitting the same window end-of-life at the same time · Range Lake — 1980s–90s single-family and a large share of manufactured homes, many on steel piles pinned to bedrock rather than wood blocking · Niven Lake — newer infill built from the 1990s onward, with townhouses, condos and detached homes; generally the youngest glazing in the city · Kam Lake and Grace Lake — originally industrial-zoned land now carrying newer large single-family builds, where full-frame replacement is more common than retrofit inserts
Why Hire a Local Window & Door Expert in Yellowknife?
Working with a local professional in Yellowknife means faster service, climate-right materials, and someone who knows Northwest Territories building codes and stands behind the work.
- ✅ Faster response times — local crews schedule estimates and installs quicker than out-of-town providers.
- 🌡️ Climate-specific advice — they know which materials perform best in Yellowknife.
- 📋 Permits & bylaws — avoid delays or fines with a contractor who knows the local rules.
- 🔧 Reliable aftercare — if an issue arises, your contractor is a call away, not in another city.
- ⭐ Trusted reputation — local businesses live and die by word-of-mouth and reviews.
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Common Window & Door Services in Yellowknife
Local pros in Yellowknife handle everything from energy-efficient upgrades to full entryway transformations. The most-requested services:
Window Replacement & Installation
Upgrade old or damaged windows with energy-efficient double-pane, triple-pane, or low-E glass units.
Door Replacement & Installation
Improve curb appeal and security with quality front doors, patio sliders, and custom entry systems.
Sliding & French Patio Doors
Add functionality and natural light with space-saving sliding doors or elegant French doors.
Custom Window Solutions
Bay windows, bow windows, or oversized picture windows for unique architectural needs.
Energy-Efficient Upgrades
ENERGY STAR® certified windows and insulated doors built for Yellowknife's climate.
Window & Door Repairs
Fix cracked frames, foggy glass, faulty locks, and weather stripping — without full replacement.
Retrofit & Full-Frame Installation
Choose retrofit (keeping the existing frame) or full-frame installation for a complete upgrade.
Condensation & Draft Solutions
Resolve air leaks, poor sealing, and moisture build-up for better indoor comfort.
Average Cost of Windows & Doors in Yellowknife, Northwest Territories
Costs vary by material, size, style, and installation method. Typical Yellowknife price ranges:
| Service Type | Average Cost (Installed) |
|---|---|
| Standard Vinyl Window (per unit) | $450 – $900 |
| Triple-Pane Window (per unit) | $700 – $1,200 |
| Bay or Bow Window | $2,000 – $4,000+ |
| Entry Steel Door | $1,000 – $1,800 |
| Fiberglass Entry Door | $1,500 – $2,500 |
| Sliding Patio Door | $1,200 – $2,800 |
| French Door (Double) | $1,800 – $3,500 |
Frequently Asked Questions
How does Mullions choose the top 3 companies in Yellowknife?
Each business is evaluated against our 30-point review standard — reputation, customer reviews, licensing, online presence, and business integrity — before being featured.
Is it free to request quotes in Yellowknife?
Yes. Submitting the quote form is completely free for homeowners, and your request goes to all featured companies in Yellowknife at once.
Do I need a permit to replace windows or doors in Yellowknife?
Permitting runs through the City of Yellowknife's Planning and Development division (867-920-5600; applications via the CityView portal). The City enforces Building By-law No. 5058 and adopted the 2020 National Building Code and National Energy Code for Buildings by by-law on 30 May 2022, which brings NBC Section 9.36 energy requirements into force for houses. In practice, swapping windows or doors like-for-like into existing openings with no change to the rough opening is not treated as a permitted structural alteration; cutting a new opening, widening or lowering an existing one, converting a window to a patio door, or altering a header or load-bearing wall is a structural change and does require a building permit. Two local traps: bedroom windows must still meet NBC 9.9.10 egress dimensions after the swap — easy to fail when a thicker triple-glazed frame shrinks the clear opening — and anything that projects beyond the existing envelope (a bay, a new entry vestibule) can trigger a development permit under Zoning By-law No. 4404, which matters most on the tight, irregular lots of Old Town and Latham Island. Yellowknife has no blanket heritage conservation district: heritage protection applies to individually designated properties by by-law (the Wildcat Café, built 1937, was designated a heritage site by Council in 1992), with the Heritage Committee advising Council. If your property is designated or you are near the waterfront, call the City before ordering, not after.
What does it cost to replace windows in Yellowknife?
Most windows run $450–$1,200 per unit installed depending on material and glass; a full-home project is typically $8,000–$18,000. See the price table below.
How soon will companies respond?
Most featured local companies respond within one business day.
Windows & Doors in Nearby Cities
- 📍Hay River
- 📍Inuvik
- 📍Fort Smith
- 📍Fort Simpson
- 📍Behchoko
- 📍Norman Wells
- 📍Tuktoyaktuk
- 📍Fort Resolution