Hellow guys, Welcome to my website, and you are watching Venting a cold roof with mushroom vents. Don't do it unless you have to. #londonroofsurveyor. and this vIdeo is uploaded by Steve Roofer at 2023-12-01T11:34:01-08:00. We are pramote this video only for entertainment and educational perpose only. So, I hop you like our website.