This is the UK - no matter how good the forecast fibreglass roofing installers should always have a couple of tarps handy. Rain is a no no during installation and can be very damaging. Be prepared.

Visqueen - Polythene BBA accredited Damp Proof Membrane.- Also Used to Cover a Roof in bad conditions, Fibreglass will not bond to the visqueen when wet. Also used when creating a Warm Roof.

Next day delivery - competitive prices - be prepared!