Sunrader wood rot over the cab from leaky window

[DatsunSunrader]

First rain fall after getting my 1979 Sunrader and I found a nice surprise. 

 

I noticed some drips of water from the front windows, So I  pulled the headliner off the over cab bed and found years of damage from leaky front windows. 

 

I'm looking for some advice on what to do with the wood that exists, and how to remove the rot, repair the wood I can salvage and reinforce it if necessary. 

The damage appears to only be in the middle of the bed area, and not on the side supports. 

 

I've resealed the window and caulked the rubber seals, as well there is a dehumidifier in there working away. 

 

Thank you. 

[linda s]

I think you just pull that wood out and replace it with good quality marine plywood. Don't remember if there is any framing under it and I couldn't find a pic. Good idea to seal both sides of the new plywood before you put it in too. 

Linda S

[DatsunSunrader]

It look likes the plywood has been Fiberglassed in on the sides and back, I could cut it into pieces and remove it, but then how would I put in a new piece? Seems to be directly on the fiberglass, no framing under there. 

[linda s]

Construction glue and then fiberglass around the edges where it was before. If you have room building some simple framing, 1x2's ?, would allow you to get some foam board insulation between the bed and the shell. A couple of members recently have rebuilt their whole inside but like I said I couldn't find pics to show you. Maybe they will chime in and tell what they did

Linda S