Rain, Rain and more Rain! … Worrying time if you build out of timber. It’s not a problem if you have a little rain but we’ve had 3 days of continuous rain and the timbers are soaked. We’re waiting to get stuck into insulating the inside now but the rain has made it nigh on impossible. Building regs dictates we must use 90mm of cellotex insulation. Having checked around a bunch of suppliers we decided to go with a company called Sheffield Insulations for all our insulation needs and pretty much all our plasterboard.