Foam shrinkage causing draughts and heat loss
Why it happens here
Temperature changes in Lightmoor's lofts cause foam to expand and contract. Over time, it shrinks away from timbers, leaving gaps. This is common in both open and closed cell foam.
Our approach
We remove the shrunk foam completely, then check for any gaps in the insulation. If needed, we install breathable insulation that won't shrink, and seal draughts around the loft hatch.