One answer I keep hearing to questions on how to do things is to follow the
manufacturer's instructions.This manufacturer is specific about how to
install it of course. Sanding the fibergass would probably be easier than
laying new plywood for sure.

link to product site - http://www.ducan.com/products/dek_master.html

My concern is whether the plywood will rot being sandwiched between two
waterproof but airtight layers.

My concern
wrote in message
...
On Thu, 14 Jul 2005 20:42:31 -0400, "Steve Lortie"
wrote:

I have a houseboat and I want to redo the surface of the upper deck with
a
vinyl membrane like product. It requires a fresh clean wood surface to
glue
it to.
My question - can I nail/screw down plywood on top of the existing
surface
which is fiberglass over plywood? With the glass underneath and the vinyl
over it, will the plywood survive this or will it rot out quickly?

Thanks.

I would coat the plywood with Epoxy resin if I didn't want it to rot
out, especially the edges. Also make sure to use either marine or ext
plywood to prevent delamination.

But why not rough the fiberglass surface and glue direct to the
existing deck instead? You may have to use a different adhesive
product, but it seems a better option


Weebles Wobble
(but they don't fall down)