KNOWLES BUILDING CENTRE

Your Trusted Building & Hardware Supply Partner - Since 1950

Contractors, do-it-yourselfers and homeowners trust Knowles Building Centre in Kapuskasing for selection, service and experience. Nobody will out-service our team when it comes to construction, renovation, home exteriors, decorating and tools. That's our promise to you!

If you're ready to start your renovation project, then now is the perfect time to talk with our professional staff – they want to help you find what's right for your needs. We've also included links to some of our suppliers' websites. If you don't see what you are looking for, let us know and we'll be happy to get it for you. And we've got gift cards for year-round gift giving!

If you're planning on building a new cottage, cabin, home or garage, Knowles Building Centre can give you a free quote for all the building materials and hardware you need. We can supply all your kitchen, bathroom and house remodelling needs with our stock of building materials, lumber, insulation, drywall, paint supplies, roofing materials, flooring, doors, windows, siding, decking hardware and more! We're your renovation specialists in Northern Ontario.

Shop over 50,000 products online, visit our building center, request a quote or contact us.

Delivery & Curbside Pickup Learn About Our Lumber Contact Us Get a Free Estimate

Contact Us

1-866-303-2251
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Visit our store at:
1 Queen Street
Kapuskasing, ON P5N 1G4

Hours:
Monday - Friday: 8:00am - 5:00pm
Saturday: 8:30am - 2:30pm

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Serving the Community of Kapuskasing and Surrounding Area for Over 70 Years

Shop Windows and Doors

Windows, garage and shed doors, patio and sliding doors, and more.

Come to Knowles Building Centre and shop our wide variety of quality window and door systems.

Whether you're building a new home, hiring a contractor or doing a home renovation project, we have the products that will enhance curb appeal, increase energy efficiency and assist with home security.

Learn More

PAINT & STAIN

Start an easy home reno project today. A new coat of paint can take a room from drab to fab, or make your deck look brand new! By simply using stains or colour, you can liven up a mood or quiet it down. You can add warmth or coolness, boldness or a subtle touch. We can help you pick the colour that is best for your needs!

Learn More About Our Paint & Stain Products

Shop Thousands of Products Online

Search and shop for building materials, household items, hardware, safety products, seasonal items and more in our online catalog including:

Cleaning Supplies
Electrical Products
Fasteners
Flooring & Accessories
Hand tools
Hardware
Heating & Cooling
Houseware Products
Insulation & Vapour Barriers
Kitchen & Bath Cabinets
Lawn, Garden & Seasonal
Masonry Products
Moulding
Paint & Sundries
Plumbing
Power Tools
Roofing & Foundation
Safety Products
Siding, Soffits & Gutters
Wallboards, Panels & Tiles
Windows & Doors

Our online catalog doesn't include our full product offering so If you don't see what you are looking for, let us know and we'll be happy to get it for you.

Shop Online

Kick-start Your Dream Reno with $10,000!

Castle's HOME SWEET HOME Renovation Contest

Stop putting your dream renovation on hold. Come into Knowles Building Centre today!

Castle's HOME SWEET HOME Renovation Contest is now on and we have ballots.

Visit us and pick up your ballot for a chance to win! Enter your ballot code online and you could WIN $10,000 to spend on Castle products and services. No matter the project, we have the products you need for the “wow” factor, from floor to ceiling.

You supply the dream, we’ll supply the products.

The contest runs from June 1st to September 30th, 2022. No purchase is necessary.

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