Recent content by Badger1962

GRP is a composite material. It is the glass that gives it its strength and the resin serves to give rigidity and form. Applied to the ply wood the resin will give the waterproof property you require and the ply will give all the strength. Epoxy resins are better than polyester but this is...

Loads wrong with this.It is the condensing water vapour that is casing the drip and staining. Firstly you need to fit a condensation trap near to the bottom but allow enough of a fall so the condensate can be piped to the eaves or some other way out of the building. Flexible pipe should be...