Skylights are basically windows that are not vertical, but usually closer to horizontal as they sit on top of the roof. Most are fixed but some open a bit for summer ventilation. There also exist roof windows which are basically skylights that open wide and are much more common in Europe where ...
Here is one water proofing material that approaches the field of Science Fiction -- but it is for real and it does work.
Xypex High'n Dry is a not so commonly available brand name of what is generically referred to as Crystalline Growth waterproofing products. These are applied to a sound bare c...
