turned out to be even more solid than I thought it would be. It has 5/8" ply sandwiched between two polyester skins. Total thickness is more than 1" over the cabin
and 1 1/2" at the entrance.
I did have to deal with a headliner
. After I located the bolt holes, by drilling through the mounting rails, deck
, I went inside and used an 1 1/2" hole saw to make access holes for each bolt. There is about 1" clearance between the underside of the deck and the top of the headliner.
I used epoxy
to laminate stringers that I had shaped and cut to fit the inside of the dodger
and the slope of the cabin
. And yes, the bolting is well calked.
With 3 to 5" of rain forecast
for this weekend, I will be able to double check my work
FWIW: I so that I can do periodic inspections, I have made removable covers, not yet installed, to cover the holes I made in the headliner.