Need help with ideas on how to waterproof front porch! - Houzz
21 Oct 2013 When I had my house renovated I was on a strict limited budget. My contractor went above and beyond with some items, one being replacing the rotting front porch floor (11'x5') and putting down composite decking. My huge problem is it's not sealed between the planks and the water runs into as hollow area just under the floor! I am a person who loves to hose down the house and porch usually but can't as the water doesn't run off it just sits in the underneath area!