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Exterior Folding Windows - Exclusively from Win-Dor
The Win-Dor Folding Window Solution
Understanding the limits of both, Win-Dor set out to create an extremely durable, strong, very low-maintenance energy efficient folding window system that we feel is probably the highest quality bifold windows in America.
Our unique blend of strong rigid aluminum framing with a long-lasting, low maintenance vinyl capping and a smaller sill creates a unique combination not available from other manufacturers. And one which is also thermally improved.
Aluminum Folding Window System
Aluminum is a great material for bifold window systems. It is strong and rigid. It allows for larger sized installations vs. the traditional vinyl bi-folding window system. At the same time, there are several drawbacks to a standard aluminum window system. Just like aluminum windows, it eventually corrodes and breaks down. Secondly, aluminum is great at transferring energy. Because of this, an aluminum bifold system will not be as energy efficient.