Proudly Serving You 

Since 1968

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About Us

Your Exterior Décor Specialists in Brampton

At Trueseal Window & Door Systems, we believe doors and windows play more than one role. They can give an aesthetic appeal to a room, boost the resale value of your property, and provide ventilation and sound insulation for your property. Not only will our products keep stray animals and other unwanted guests out, but our doors and windows ensure that you are also perfectly safe, secure and cozy.

Our Family History

Len Cook started installing for his father, Bart Cook, back in the 60's and branched off on his own in 1968. We’ve been in business for 51 years, and are family owned and operated. Our installers take a methodical and meticulous approach to the placement of doors and windows, their dimensions, type and design, and materials used in their construction. Most importantly, we understand that like other architectural elements, doors and windows must blend in with the overall style of the building.

There has been incredible progress in the quality of products available over the years! We are very proud of our crews’ workmanship and integrity, which allow us to boast “We are the bay and bow window specialists!” Our personal touch, along with superior Canadian-made products, has earned us a solid and steadfast reputation over the past five decades.

Professionalism & Quality Workmanship

Hire a professional who will help you pick the right kind of doors and windows in terms of material, size, type and design. Update your existing windows and doors with brand new styles and features at Trueseal Window & Door Systems. You can count on our lifetime, non-prorated, transferable warranty. Give us a call today and get an estimate. Share your vision with us in Brampton.

Vinyl Windows & More

Whether it’s a single hung or double hung window, we carry it here.

Fibreglass Doors & More

Get an elegant fibreglass door from our team of professionals.

Privacy Policy

Trueseal Window & Door Systems is committed to respecting the privacy of individuals and recognizes a need for the appropriate management and protection of any personal information that you agree to provide to us. We will not share your information with any third party outside of our organization, other than as necessary to fulfill your request.

Trueseal Window & Door Systems

289 Rutherford Rd. S., Unit 19,
Brampton, ON, L6W 3R9
Call Now: 905-451-7363


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Monday - Friday 10:00 AM - 05:00 PM

Saturday 11:00 AM - 03:00 PM

Service Area

  • Brampton and the surrounding areas.

  • Peel Region

  • Halton Region

  • Dufferin

  • Northwest GTA


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