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Visit our showroom!! 289 Rutherford Rd.S., Brampton, ON
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About Us
Trueseal has been family owned and operated since 1968. As President, Len Cook reflects on the changes in the renovation industry, as 3 generations now have been a part of the progress and changes to date! Bart Cook, Len’s Father started out in the 1950’s with his company, Windseal, when all there was to aide in drafty environments were storm windows and doors. Len started out in sales and installations for his Father until 1968, when Trueseal Window & Door Systems was born.

With daughter Deb at his side for the past 30 years we are proud to be celebrating 47 years of making your home renovation dreams come true! 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 have earned us a solid and steadfast reputation over the past 4 decades. Our best promoters are our satisfied customers, please feel free to peruse what the have to say about their experience with Trueseal Window and Door Systems!