Note, for instance, how the runoff from the roof is concentrated at the corners, thus ... to the exterior building envelope (siding, trim, window and door frames) from rain water. ... Typical EMCs for exterior framing in the U.S. range from 7% to 14%, ... rotting when their moisture content rises above 25% and to insects and molds .... This step by step diy project is about front door canopy plans. I have designed this super simple canopy that you can use to enhance the look of any front do