Originally Posted by C-NUMB
How about putting a car interior heater( or another small heater) inside the locker and simultaneously maintaining good ventilation. Think this would make sure it will dry properly. Moister tends to dry much better upwards than in any other direction, thus additional heat would be good. However safety is an issue, you don't want to burn Your boat....
Hell of a job(if even possible?) would be to remove say 10 cm around the hatch opening the plywood(from underside with small circular saw cutting the depth of the plywood ) and then replace with fresh material doing a proper job/finsh.
Yeah that's what I was thinking about in terms of the fan heater. I'd also thought about using a halogen worklight (150w) as most of that 150w will be heat.
In terms of the repair, I had initially planned to remove the wood under the ply with a powerfile (leaving top fibreglass intact) but I recconed that the bond point between the new and old would then be a weak point and I'd need to glass in some struts underneath. There is also not a lot of room in the locker so space for tools is limited! At present the ply doesn't appear to be rotten (just delaminating) so adding the resin should both stabalise it and re-bond it. With the filler compound in the resin mix I would guess that it will then be stronger that the original ply or that's the hope! All credit to Pikey Dave re the repair method!