Enhance the look of your home, upgrade the performance of your windows and doors!

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Windows & Doors Made in Canada

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Made in Canada

FAMILY OWNED

NO SALESMAN COMMISSION

NO SUBCONTRACTORS

Elegant Designs by CASSA Windows & Doors

For over a decade we have been helping homeowners transform their homes with beautiful windows and doors and at the same time providing them with most superior quality and highest build efficiency. We are recognized in GTA as installation professionals ready to help you with any scope of work needed.


Our in-house installation department, and our specific approach, by eliminating third parties involved will insure you get the most beautiful work provided and eliminate high charges.


We offer high efficiency windows and doors that are lifetime warrantied and bring the latest technological achievement in our industry.

Get lifetime warranty windows for the best price in the city!

Get Best Quality For The Best Price Possible

We are able to offer you the best quality products made here in Canada, for the best price possible, as we control both production, and installation department.

No Limitation Lifetime Transferable Warranty

All windows are CSA, Window Wise, S.A.W.D.A.C. and Energy Star Certified, and come with written, lifetime warranty certificate.

No Third Parties Involved In Sales Nor Installation

With over two decades of experience on the highest industry level, we understand, in order to provide you with best price possible for the best quality product, we had to eliminate third party overhead. This is why we do not employ any sales staff nor subcontracting crews.

23 Years Of Loyal Customer Support


Cassa Window & Door Designs Ltd. Provides professional installation services in combination with outstanding product quality and designs.

ENERGY STAR Thermal Efficiency

Cassa windows are made of an exclusive 100% lead-free uPVC powder compound. This special compound gives the system a better resistance to impact and discolouration. The windows are maintenance-free and will not crack, blister or warp. 

CSA & S.A.W.D.A.C

Certified

Our windows have the highest number of internal air chambers, giving them outstanding insulation and sound abatement qualities. 

Cardinal sealed glass units have 13/16” overall thickness LoE Glazing Super Spacer. 

With Cassa, your entrance can become a unique standout piece. This is possible through a variety of design collections, from modern doors with clean lines, to stained fiberglass doors with wrought iron inserts.

Add protection to your home with our state of the art multipoint locking system.


To find out more please contact us today.

Recent Specials

Buy 10 Or More Windows And Receive a Patio Door for FREE

With purchase of 10 or more windows you are eligible to receive a free patio door through our manufacturing program.

Purchase 6 windows and receive $900 OFF

With purchase of at least 6 windows you are eligible to receive a nine hundred dollars instant rebate on brick to brick installation.

Please contact us for more information or set up an in-home consultation today.

Contact Us

Get a FREE Quote

Windows & Doors Made in Canada

Your information is secure and confidential. Never to be shared with third parties.

Limited time offers apply, please call or request a quote to find out more.

SERVICE GUIDE

We Service

Entire GTA

We can help you improve the look and energy efficiency of your home as long as we can get a chance to present our products to you.

We have a large selection in window styles available to see in our state of the art showroom. From Casement, Awning, Single Slider, Double Slider, Hung designs to custom Bay and Bow styles.

We can help you understand what makes a true energy efficient windows and doors. Our installation department reaches out anywhere in the Greater Toronto Area.

We provide our services in: Toronto, Mississauga, Oakville, Burlington, Hamilton, Brampton, Aurora, Kitchener, Waterloo, Oshawa, Whitby, Pickering and more.

Contact us today to book a free in-home consultation and let us advise you on the best choice for your home.

Contact Us

Get a FREE Quote

Windows & Doors Made in Canada

Your information is secure and confidential. Never to be shared with third parties.