Soft Deck

[seandepagnier]

There is a spot on my deck where when I step there, the fiberglass moves 2-3mm. The deck is plywood inside with fiberglass on top and bottom.

I am told you can drill holes, and inject epoxy to fix this, but I am wondering what other people have to say. I fear the plywood may be starting to rot, but it is not in terrible shape.

[roverhi]

Drill into it in some place that it's not too obvious, maybe from the inside. Will tell you whether it's rotten or just delaminated. If it is rot and not a large area, you can drill holes and inject thin epoxy like GitRot or that English product to reconstitute the wood fibers. If more than a square foot or so is rotten, best fix is to cut out and recore. The most important thing is to figure out how water is getting into the core. May have to R&R hardware using epoxy to seal and stabilize the core around the fasteners and LifeCaulk to seal the hardware. This is one guys way to do it: Hardware Installation on Deck. I use a dremel tool with a 3/8' or so circular saw blade to rout out the core around the fastener and chamfer the hole in the deck so there is a lot of caulk where the fasteners enter the deck.

Aloha
Peter O.