Start removing the old damaged material using an electric saw to cut it.
Replacing plywood floor in fiberglass boat.
Marine plywood is often used to build boat interiors and to replace flooring during boat renovations.
Note that even though the plywood has been snapped and left exposed to rain and wind it still holds its integrity.
Step 1 remove the damaged flooring.
Wood and fiberglass in hot summers and frozen cold winters.
If the stringers and bulkheads are rotten get them replaced with fiberglass ones.
Replace the carpet or use a fiberglass repair kit to finish the surface of the floor.
Set the repair patch in place and use the cordless drill to drive the screws and complete the repair patch.
The length of the wood screws is equal to the combined thickness of the floor and the marine plywood.
The most common material used for boat flooring is bc plywood and it is also used for fiberglass boats in particular.