Hi,
I have a query regarding insulation for my home which cannot be fully insulated. I have a 1 metre by 15 metre long section of ceiling on both sides of the house that cannot be insulated. My home is roughly 7 metres wide. If the rest was insulated would it still be effective? One of the insulation companies told me that if 5% or more is not insulated then it becomes 95% ineffective?! Is this the case?
Thanks