Most of the property holder ignores the importance and requirement of waterproofing while constructing their home or building. You can probably ignore the wetness that is leaking into your home, but eventually, that is the costly "way out," since water will finally intimidate the structural veracity of your house.
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... floors, and roof) are of noncombustible materials having fire-endurance ... since windows are fire openings. How to Build a Fire Resistant House Frame ...