I bought a membrane online 1.5mm grade and when it came it had been folded into 3 and rolled but when laid out on the roof the inner strip has stretched and is slightly wrinkled. I put some heat on the heavy creases alone the rolled edges and they flattened out OK but despite leaving the membrane overnight to relax it's still wrinkled this morning.
As it's only the inner strip it won't just stretch out as the two outer strips are flat and I know from experience PVA won't have enough grab to hold the wrinkles flat, I was thinking of pouring buckets of boiling water over it but wondered if anyone had any better ideas.
As it's only the inner strip it won't just stretch out as the two outer strips are flat and I know from experience PVA won't have enough grab to hold the wrinkles flat, I was thinking of pouring buckets of boiling water over it but wondered if anyone had any better ideas.
