One form → quotes from all 3 top Saint John companies
Skip the phone tag. Describe your project once and every vetted company below comes back to you with a quote. No strings attached.
‹
›
Homestar Inc.
- Energy-Efficient Upgrades
- Custom Windows
- Entry Doors
- Patio Doors
- Window & Door Installation
- Siding
‹
›
Atlantic Windoor Ltd
- Garage Doors
- Aluminum Doors
- Steel Doors
- Window Replacement
- Window & Door Installation
- Design Consultation
‹
›
Metcalf Glass Ltd
- Vinyl Windows
- Aluminum Windows
- Patio Doors
- Garden Doors
- Steel Doors
- Aluminum Doors
Windows & Doors in Saint John: A Local Buyer's Guide
Saint John has the oldest and most architecturally diverse housing stock in New Brunswick — roughly 40% of it built before 1960, with whole streets of post-1877-fire Victorian wood-frame and brick homes in the South Central Peninsula and North End, plus mid-century bungalows and splits across the East and West sides. That means a large share of local homes are still working with original single-glazed sashes, 1970s-era aluminum sliders, or first-generation vinyl that has failed at the seals. Replacement matters more here than in most Canadian cities because the Bay of Fundy delivers salt air, fog, wind-driven rain and about 1,377 mm of annual precipitation onto building envelopes that were never detailed for it — so a leaky window in Saint John is a rot problem, not just a heating-bill problem.
🌡️ Climate & what to buy
Saint John is a marine climate on a cold-water bay, and that combination drives the spec sheet. Prioritize water and air performance first: ask for the CSA A440/NAFS performance grade and a water-penetration-resistance rating suited to an exposed coastal site, and insist on sloped sills, sill pans and proper flashing integration rather than caulk-only installs — wind-driven rain off the Bay is the number-one failure mode here, ahead of heat loss. Choose corrosion-resistant hardware and fasteners (stainless or heavily coated) on anything within salt-spray reach of the harbour, Red Head, Sand Cove or the western shoreline. For thermal performance, ENERGY STAR Canada moved to a single national requirement in 2020 — U-factor of 1.22 W/(m²·K) (0.21 imperial) or lower, or an Energy Rating of 34 or better — and that certification is also the gate for the NB Power rebate, so treat it as the floor, not the goal. Given Saint John's long heating season, triple glazing with argon fill, soft-coat low-E and warm-edge (non-metal) spacers is the sensible default on north and west elevations; double-glazed low-E is often adequate on sheltered south walls. Warm-edge spacers and good condensation-resistance numbers matter in particular because Fundy fog keeps indoor-outdoor humidity gradients high. Two local realities to plan for: freeze-thaw cycling hovers around 0°C far more often than in inland New Brunswick, so sealants need to stay flexible; and century-home openings are rarely square, so budget for custom-sized units rather than stock sizes.
📋 Permits & bylaws
The City of Saint John lists "adding a new room, windows, or new doors" among the residential projects that require a building permit, and any work that enlarges an opening, cuts a new one, or touches a header or lintel is clearly permit work. Straight like-for-like replacement into an existing opening is often treated as maintenance, but the City does not publish a blanket exemption — call the One Stop Development Shop at 506-658-4455 (or email before you buy anything) to confirm your specific job. Permits are handled at the One Stop Development Shop on the ground floor of City Hall, 15 Market Square. Heritage is the bigger trap. If your property sits in a Heritage Conservation Area, all exterior work is subject to the Heritage Conservation Areas By-Law (HC-1) and you need a heritage permit — a Certificate of Appropriateness — before you begin, with only narrow exemptions such as repainting in previously approved colours and general maintenance. Minor items are signed off by the Heritage Officer; major alterations, infill and demolition go to the Heritage Development Board, which meets on a schedule, so build review time into your project. General heritage permits are issued at no fee, but proceeding without one carries a $200 penalty (far more for unpermitted demolition). Saint John designated Trinity Royal — the Prince William, Canterbury, Germain, Princess, Duke and Queen Square streetscapes — as its first conservation area in 1982, and Orange Street, King Street East and portions of Douglas Avenue have since been added; check the City's heritage conservation area map rather than assuming. In these areas expect scrutiny of sash configuration, muntin pattern and profile, frame material and sightlines — vinyl in a former wood double-hung is frequently refused, and the Board's stated goal is retaining or matching original character-defining elements and profiles. Talk to Heritage Services before you plan, purchase or hire; their advice is free. Budget for the product as well as the paperwork: heritage-appropriate wood or clad-wood sashes for a Trinity Royal or Orange Street property commonly run $2,000+ per opening, against $850–$1,600 for a standard triple-pane vinyl unit.
💰 Rebates & incentives
Commonly available — verify current details and deadlines directly with each program before you sign a contract. The main one for Saint John homeowners is NB Power's Total Home Energy Savings Program (saveenergynb.ca), which pays a per-opening rebate on ENERGY STAR certified windows and doors — commonly cited at roughly $30 per opening on its own, scaling up to about $50 per opening when combined with multiple primary upgrades such as insulation, air sealing or a heat pump. It requires a pre-retrofit Home Energy Evaluation by a registered energy advisor and a follow-up evaluation after the work, so book the evaluation before ordering windows; registration cut-offs and completion deadlines move each program year. NB Power also runs an income-qualified stream offering no-cost or heavily subsidized upgrades for eligible households — worth a call at 1-800-663-6272 to check which stream you fall into. On the federal side, be careful with outdated advice: the Canada Greener Homes Grant ended in 2024, and the Canada Greener Homes Loan closed to new applicants on October 1, 2025. The Canada Greener Homes Affordability Program (for low-to-median-income households, with windows and doors among the eligible measures) is delivered through provincial partners, and as of mid-2026 New Brunswick had not yet finalized a delivery agreement — so confirm with Natural Resources Canada whether NB has since joined. Finally, if your home is in a Heritage Conservation Area, the City's Heritage Grant program can offset conservation-grade work: a Heritage Maintenance Grant at 25% to a maximum of about $750/year, a Heritage Conservation Plan Grant at 50% up to roughly $1,500, and a Heritage Conservation Grant at 45% up to roughly $7,500 for restoration of original character-defining elements. Applications typically open in December following Common Council approval, and the grants are aimed at retaining or faithfully matching original materials and profiles — stack it with the NB Power rebate where the product qualifies for both.
📅 Best time to install
Book your Home Energy Evaluation and your quotes in late winter or early spring, and aim for a September–October install. Saint John installers fill their summer calendars by April, so the shoulder season buys you a better crew and a better price — and it gets sealants and expanding foam cured well before the December–March nor'easters drive rain and snow sideways into the west and south elevations. Plan the calendar around real lead times: 2–5 business days for a site visit and quote off-season, and 6–12 weeks from deposit to install during the June–September peak, longer for custom or heritage-profile units. If you must go ahead in deep winter, ask specifically what low-temperature caulk and foam the crew uses and how long each opening will stay uncovered; reputable Saint John companies work one opening at a time in cold weather. One local footnote: exterior condensation or frost on the outside pane of new triple glazing during a Fundy fog morning is a sign the glass is performing, not a defect.
Serving neighbourhoods across Saint John: Uptown & South End · Trinity Royal · North End · Millidgeville · East Saint John · Saint John West
Why Hire a Local Window & Door Expert in Saint John?
Working with a local professional in Saint John means faster service, climate-right materials, and someone who knows New Brunswick 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 Saint John.
- 📋 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.
Get 3 Free Quotes with One Form
One form reaches all our expert-recommended companies in Saint John. Fast, free, and no obligation.
Common Window & Door Services in Saint John
Local pros in Saint John 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 Saint John'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 Saint John, New Brunswick
Costs vary by material, size, style, and installation method. Typical Saint John price ranges:
| Service Type | Average Cost (Installed) |
|---|---|
| Standard Vinyl Window (per unit) | $650 – $1,300 |
| Triple-Pane Window (per unit) | $850 – $1,600 |
| Bay or Bow Window | $2,400 – $4,900+ |
| Entry Steel Door | $1,200 – $2,000 |
| Fiberglass Entry Door | $1,700 – $3,000+ |
| Sliding Patio Door | $1,300 – $3,000 |
| French Door (Double) | $1,900 – $4,000 |
Frequently Asked Questions
How does Mullions choose the top 3 companies in Saint John?
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 Saint John?
Yes. Submitting the quote form is completely free for homeowners, and your request goes to all featured companies in Saint John at once.
Do I need a permit to replace windows or doors in Saint John?
The City of Saint John lists "adding a new room, windows, or new doors" among the residential projects that require a building permit, and any work that enlarges an opening, cuts a new one, or touches a header or lintel is clearly permit work. Straight like-for-like replacement into an existing opening is often treated as maintenance, but the City does not publish a blanket exemption — call the One Stop Development Shop at 506-658-4455 (or email before you buy anything) to confirm your specific job. Permits are handled at the One Stop Development Shop on the ground floor of City Hall, 15 Market Square. Heritage is the bigger trap. If your property sits in a Heritage Conservation Area, all exterior work is subject to the Heritage Conservation Areas By-Law (HC-1) and you need a heritage permit — a Certificate of Appropriateness — before you begin, with only narrow exemptions such as repainting in previously approved colours and general maintenance. Minor items are signed off by the Heritage Officer; major alterations, infill and demolition go to the Heritage Development Board, which meets on a schedule, so build review time into your project. General heritage permits are issued at no fee, but proceeding without one carries a $200 penalty (far more for unpermitted demolition). Saint John designated Trinity Royal — the Prince William, Canterbury, Germain, Princess, Duke and Queen Square streetscapes — as its first conservation area in 1982, and Orange Street, King Street East and portions of Douglas Avenue have since been added; check the City's heritage conservation area map rather than assuming. In these areas expect scrutiny of sash configuration, muntin pattern and profile, frame material and sightlines — vinyl in a former wood double-hung is frequently refused, and the Board's stated goal is retaining or matching original character-defining elements and profiles. Talk to Heritage Services before you plan, purchase or hire; their advice is free. Budget for the product as well as the paperwork: heritage-appropriate wood or clad-wood sashes for a Trinity Royal or Orange Street property commonly run $2,000+ per opening, against $850–$1,600 for a standard triple-pane vinyl unit.
What does it cost to replace windows in Saint John?
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
- 📍Moncton
- 📍Fredericton
- 📍Bathurst
- 📍Miramichi
- 📍Edmundston
- 📍Dieppe
- 📍Campbellton
- 📍Oromocto
- 📍Woodstock