Trust Experience. Trust Quality. Trust Local.

Professionally Installed by the Experts

Now Selling Windows and Doors for the Do-It-Yourselfer

  • Our office is currently closed to the general public however we are available to take your calls for estimate requests, payments or any general inquiries.
  • Your estimator can make arrangements to meet you at our showroom for an in-house consultation. We are sorry for the inconvenience.

Exterior Finishing Thunder Bay  - Windows, Doors, Siding, Soffit, Fascia, Eavestrough, Decks, Interior Renovations and more!

Your home is one of the biggest investments you will ever make. There is nothing you will put more time and money into, so when it comes to taking care of it, only the best will do.

Exterior Finishing

“Wow, we really can afford to fix up our home after all! Thank you, Exterior Finishing!”

Get a Free Quote

Windows, Doors, Siding for Thunder Bay

A new window or door is only as good as the company that stands behind it. That’s why Exterior Finishing, Thunder Bay, is the right choice for your house. Let us help you with any of the following services:



Choose from the industry’s best energy-efficient vinyl windows!



Who knew doors this beautiful could be so energy-efficient?

Decks, Sunrooms & Additions


Relax, read a good book, and enjoy the natural sunlight with a deck or sunroom addition.



Upgrade your home’s siding with beautiful, maintenance-free aluminum siding from Royal Crest® and other leading brands.



Water spots on your ceilings or walls? It may be time to replace your eavestroughs and soffits.



Get all our services with a 5-year complete coverage guarantee from Exterior Finishing.

Exterior Finishing has provided Thunder Bay with quality products, exceptional value and outstanding customer service since 1975. You will feel confident in our 5-year labour warranty. See for yourself the work we’ve done for our customers – many of whom are return customers.

Exterior Finishing

Satisfaction... Guaranteed.

If you find a problem, we’ll correct it at no cost to you.

Get a Free Quote

Canadian-Made Windows & Doors

When you want quality North Star vinyl windows, Inkster Park entrance doors, Everlast storm doors, Royal® Crest vinyl siding or JamesHardie® cement board siding, call Exterior Finishing -- Thunder Bay’s locally owned contracting company.

“Prompt... Friendly”

“Awesome work! Very friendly and prompt! Skilled installers... I will be a repeat customer for sure... Another door and many, many windows to be replaced in the future!” 

- Ryan B.

Professional Affiliations

Official Dealer of North Star Products

Official Dealer

Approved Energy Star Dealer

Approved Dealer

Exterior Finishing

Visit Our Showroom

Our showroom is at 882 Tungsten Street in Thunder Bay.

Exterior Finishing

882 Tungsten St

Thunder Bay, ON P7B 6J3






Business Hours

Monday - Friday 08:00 AM - 05:00 PM

Saturday - Sunday Closed

Service Area

Thunder Bay, Ontario and surrounding areas

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