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how to waterproof large floor to ceiling windows

vishal sethi
2 years ago

Hi, I am doing an addition Northern California in our master bedroom and bathroom and plan to install Marvin Modern widows that go from floor to ceiling (almost windows). I would like these windows frame to sit all the way to the finished floor and don’t want to have a threshold in the bottom. My flooring is wood floor and is 5/8 thickness and bathroom will be tiled. My GC is saying that this cannot be done due to waterproofing concerns. I am sure this cannot be the case as we always see many many homes with floor to ceiling windows where frame goes all the way to the floor. Any advise would be very helpful.

I have attached renderings of my master bedroom and bathroom and also some example photos.


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