Thunder Bay, ON

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Thunder Bay, ON
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Best Window Installers in Thunder Bay, ON

11 companies listed · 9 in Thunder Bay · 5 rated 4.5+

Data verified October 18, 2026

We are still growing

There are too few quality options within 25 km, so we have expanded area of coverage to up to 100 km from you. This includes Thunder Bay and several other cities.

Til-Ka Construction Inc.

Til-Ka Construction Inc.

4.3 40 reviews
“Rigid foam insulation under the new siding, as well as new windows is already saving on heating costs.”
Free estimates5-yr warranty24/7 emergency serviceHAAG-certifiedSince 1995Serves Thunder Bay, Kakabeka Falls +18
636 Squier St
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SRS Windows and Doors Inc.

SRS Windows and Doors Inc.

4.4 20 reviews
“We are and will continue to recommend SRS Windows & Doors to everyone We know.”
665 Beaverhall Pl
Featured

Mitten Announcement 📣 Dear Valued Mitten Customers, We are pleased to announce that we have resumed production of all colours of our full vinyl siding portfolio. We appreciate the efforts of our supply chain team and suppliers to quickly mitigate the ASA material availability challenges impacting the vinyl siding industry. The resilience of our supply chain has allowed us to lift all previous product restrictions. You can now place orders for all our vinyl siding products without any limitations. We sincerely appreciate your patience and cooperation during this challenging period. We are committed to ensuring a smooth transition back to full production and supply. Thank you for your continued partnership and support. Best regards, Dave Simpson Vice President of Sales Mitten Building Products...

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Exterior Finishing

Exterior Finishing

4.0 14 reviews
“Needed a new front living room window, quick and efficient from the estimate, to ordering to install.”
Free consultation
882 Tungsten St
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Afab Windows and Doors

Afab Windows and Doors

5.0 11 reviews
“Needed my front windows replaced in living room bill was fast friendly and did excellent work, very well priced most certainly will be number one window guy for me”
Free consultation
546 Ryerson Crescent
FAQs
Can replacing my old windows/doors save me money on heating and cooling costs?
Yes. High quality replacement windows/doors, properly sealed and installed, can have a significant impact on your heating and cooling costs. According to the latest National Research Council of Canada report, replacing all the windows and doors in your house by high energy efficiency products can reduce your energy bill by up to 16% . For an average home with a $150 energy bill per month and an annual increase of 7.5% in energy cost in the last 10 years , the saving equals $12,000 over 20 years.
Why is Vinyl a good choice for my window?
Vinyl is by far the most popular type of window because of it's energy efficiency, durability, cost and because it is virtually maintenance-free. Many companies use high quality virgin powder vinyl that is resistant to moisture and will never crack, peel, fade or need to be re-painted or stained.
What's the difference between replacement windows and new construction windows?
Replacement grade windows and doors are typically higher quality products than New Home Construction (or Contractor) products. The reason is that new home builders and contractors are looking for the cheapest products they can buy to maximize the return on their project and they usually only offer the minimum warranty by law which is 2 years. Most companies offering replacement windows offer a warranty of 10 years or more because their products are better designed, built and installed.
Why do you use foam insulation instead of fiberglass insulation?
Our low expansion foam is designed specifically for window and door installations. It expands to fill voids that fibreglass batt insulation may not effectively reach. Unlike fibreglass, foam acts as a vapour barrier that seals openings and gaps and reduce leakage. Stuffed into gaps, compressed fibreglass insulation loses its insulating value. It is also susceptible to moisture that penetrates gaps in the form of water vapour or liquid water from rain, snow and condensation. Over time, that moisture can lead to the growth of mold . In contrast, insulating foam sealant fills gaps with a water-resistant seal. It expands to take the shape of cracks and voids, forming a long-lasting airtight bond to the vinyl, wood, composite and metal surfaces.
What if there is a problem with my new window/door?
If there is ever a problem with one of your windows or doors just give us a call and we'll come make it right. Our warranty covers 100% of both parts and labour, no questions, no hassles!
Get the answers to more questions on the FAQ page on our website.
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Thunder Bay Glass & Windows

Thunder Bay Glass & Windows

5.0 20 reviews
“💕 they are our go to for windows and doors from now on.”
920 Cochrane St
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New Method Insulation & Supply Ltd

New Method Insulation & Supply Ltd

3.9 13 reviews
“Customer service was fantastic, product excellent quality and installation was perfect and on time.”
Free consultationSince 2018
793 Memorial Ave
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Listed for homeowners in and around Thunder Bay, ON, these 11 companies fit and repair windows. Frame materials, glazing options and any credentials shown are taken from company websites; the customer lines are quoted from public reviews.

Area overview: Thunder Bay, ON

9 of the 11 companies we list are based in Thunder Bay; the other 2 serve Thunder Bay from Oliver Paipoonge (20 km). 9 of the companies on this page have a rating, from 3.9 to 5.0 across 182 reviews; 5 are rated 4.5 or higher. 1 lists staff certifications (HAAG and IICRC). 3 give free estimates and 1 is family- or locally-owned. We have a website on file for 9 of the companies on this page; 7 publish a contact page and 6 list a public email. We count these figures across the companies on this page; distances are straight-line, and hours and prices change, so confirm the details with the company before you book.

Is the home visit and measurement free?

A no-cost quote is offered by 3 of the 11 companies on this page. It comes with a sales visit, so agree how long it will take before they arrive. Ask for the quote in writing on the day, itemized by window, and be wary of a discount that disappears the moment the visit ends.

Thunder Bay Home Improvements

Thunder Bay Home Improvements

5.0 1 review
219 Kingston St
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MJM Contracting

MJM Contracting

5.0 10 reviews
“Given weather conditions that affect completion they worked more than a full day to catch up.”
25-yr warranty10+ yearsServes Thunder Bay
6 km from Thunder Bay
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Northern Pro Glazing Inc.

Northern Pro Glazing Inc.

Since 2021
178 Phillips St
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Frontier Glass Inc

Frontier Glass Inc

955 Walsh St W
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Kam Ridge Manufacturing

Kam Ridge Manufacturing

4.1 4 reviews
“Great staff and wonderful to work with.”
Since 2011
Oliver Paipoonge, ON · 20 km from Thunder Bay
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HomeWindow InstallersOntarioThunder Bay, ON

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