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Strasser & Lang

Thunder Bay Window Installers
Ranked #4 in Thunder Bay | Grade B+
4.80 (80 reviews)

Strasser & Lang

Strasser & Lang provides window and door solutions tailored to Thunder Bay homes, with careful installation and attention to exterior details.

Why Homeowners Choose This Business

Local climate know-how, straightforward estimates, and coordinated installations that fit your home’s style and budget. Clear timelines and responsive follow-up set expectations and keep projects on track.

Service Area

Thunder Bay and surrounding Northwestern Ontario communities.


How This Business Compares

A quick local comparison based on ranking, review strength, and market visibility.
  • Maintains a competitive standing in this market.
  • Has a higher average Google rating than many businesses in this area.
  • Has more Google review volume than many local competitors.
  • Shows strong customer satisfaction signals based on review quality and volume.

Services Covered

  Renovation Services
  Roofing Contractor
  Service
  window replacement
  window installation
  energy efficient windows
  vinyl windows
  Casement windows
  Awning windows
  sliding windows
  exterior doors
  Patio doors
  Door installation
  Window Trim and Capping
  window consultation

Services include consultation, supply, and installation of replacement windows and exterior doors, along with related trim and finish work.


Recent Reviews

4.80

(Based on 80 reviews)

Customers note neat workmanship, punctual crews, and upgrades that improve warmth and reduce drafts. Many mention clear communication from estimate to completion.

Google Review
shannon belisle on Strasser & Lang

Absolutely incredible service and remarkable work! Would ?? recommend and would hire again! I am absolutely IN LOVE with my new doors!

Google Review
Ken McLellan on Strasser & Lang

All roofing on our house replaced - old stuff removed was 20 years old, deteriorated and with one small leak. Strasser & Lang did a great job including six new attic vents. Work looked to me fully professional, final result looks great. Courteous crew, very good worksite cleanup. Invoice was exactly as estimated. A competitor's estimate was at higher price and similar timing.
Note to readers: ALL roofing contractors get booked up quickly each spring, so get your arrangements made as soon as possible. We booked on July 31 and were told very likely into September. They came on Sept 23, so they met their timing estimate.

Update: We also contracted with Strasser & Lang to replace Soffit & Fascia with Aluminum materials, done on a later date by a different crew. They did that about Nov 10 (that's about what they had told is for timing). Smooth professional job looks great. Now I'll never have to climb and paint that stuff - I could not do it myself anyway! Again, invoice was as they had estimated.

Google Review
Nowell Sleep on Strasser & Lang

Strasser & Lang replaced my Condo living room and 2 bedroom windows. The staff were really professional, personable and very helpful. The workers showed up at the time scheduled and they used drop cloths so as not to make any mess. They did a great job and cleaned up after. They removed and replaced my living room curtains and bedroom blind. I would highly recommend them. The office staff were also very good to deal with.

Google Review
Laura Lee Jewell on Strasser & Lang

It has been a great experience working with this company. I was unsure what was needed and required more than one estimate. Justin was patient and answered my questions. Kara in the office was super helpful and I am thankful for her input choosing shingles etc. The new roof, soffit, fascia, eavestroughs and downspouts look great. Both work crews were respectful, polite and truly engaged in their work. The communication around timelines for crew arrivals was spot on. I highly recommend.

Google Review
Pamela MacDonald on Strasser & Lang

Very professional and respectful young men who worked well together. They kept me informed with the conditions and pictures as they completed the roof. The property was well cleaned as the job was completed. Very pleased and would definitely recommend
JT and his team.


Special Offers

Free Estimate

This business may offer free estimates for some services.


Frequently Asked Questions

They install common residential styles such as casement, awning, slider, and fixed units. During a consultation, they’ll match styles and glass options to your home and budget.

Most single-home projects are measured in days, not weeks, depending on the number of openings and site access. Your written estimate will include a schedule and any preparation steps.

Yes. They can recommend frames, glazing, and weather-sealing suited to Thunder Bay’s winters. Proper installation and air sealing are part of their standard approach.

Yes, they can supply and install entry and patio doors to coordinate with new windows. Trim and finish work is planned so the exterior looks consistent when the job is done.

Call the office or use the contact form on their website to schedule a visit. A team member will review options on site and provide a written estimate.
 Verified Listing

Opening Hours


  • Monday 9:30 AM – 4:30 PM
  • Tuesday 9:30 AM – 4:30 PM
  • Wednesday 9:30 AM – 4:30 PM
  • Thursday 9:30 AM – 4:30 PM
  • Friday 9:30 AM – 4:30 PM
  • Saturday Closed
  • Sunday Closed

Request Service


Business Details


Business Rating
4.80 (80 reviews) FeaturedPro Business
Address
675 Harold Crescent, Thunder Bay, ON P7C 5H5, Canada, Thunder Bay, ON P7C 5H5, CA
Business Type
roofing_contractor

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