james cross
Hi Colin the roof felt needs to be taken off roof re boarded in 18mm osb and then fibreglass to make a proper job it would just peel of felt in years to come please let me know if you need any help thanks James (fibreglass roof master )
Fibre glass roofing
Posted by Colin Adams, on
Can you put fibre glass over felt
Adam M Adamou
Yes you can do but you have to make sure the playwood is not rotten and double coat it