I have a 14" heavy duty john boat. The boat came with foam under a thin
metal deck. The foam was saturated with water and disintegrated. I don't
think I can get the exact same foam thickness to reinstall the metal deck
and I don't care for the look of the metal sheeting. I realize that
marine plywood would be best, but it is hard to find and is expensive. I
would need two sheets. Is treated 1/2" plywood acceptable?

Dan Listermann wrote:
I have a 14" heavy duty john boat. The boat came with foam under a thin
metal deck. The foam was saturated with water and disintegrated. I don't
think I can get the exact same foam thickness to reinstall the metal deck
and I don't care for the look of the metal sheeting. I realize that
marine plywood would be best, but it is hard to find and is expensive. I
would need two sheets. Is treated 1/2" plywood acceptable?



Not for my boat.

On Wed, 12 Aug 2009 17:25:07 -0400, "Dan Listermann"
wrote:

I have a 14" heavy duty john boat. The boat came with foam under a thin
metal deck. The foam was saturated with water and disintegrated. I don't
think I can get the exact same foam thickness to reinstall the metal deck
and I don't care for the look of the metal sheeting. I realize that
marine plywood would be best, but it is hard to find and is expensive. I
would need two sheets. Is treated 1/2" plywood acceptable?

Probably using other then "marine" or "exterior" grade plywood will be
less then satisfactory as the glue will not be waterproof and will
delaminate.

cheers,

Bruce in Bangkok
(bruceinbangkokatgmaildotcom)

Dan Listermann wrote:
I have a 14" heavy duty john boat. The boat came with foam under a thin
metal deck. The foam was saturated with water and disintegrated. I don't
think I can get the exact same foam thickness to reinstall the metal deck
and I don't care for the look of the metal sheeting. I realize that
marine plywood would be best, but it is hard to find and is expensive. I
would need two sheets. Is treated 1/2" plywood acceptable?



I think you will find in the long run it is a false economy. My brother
made a canoe out of treated plywood and within a couple of years it was
unusable. It rotted from the inside and delaminated.

If you are going to spend the time spend the extra money.

In article ,
says...

I have a 14" heavy duty john boat. The boat came with foam under a thin
metal deck. The foam was saturated with water and disintegrated. I don't
think I can get the exact same foam thickness to reinstall the metal deck
and I don't care for the look of the metal sheeting. I realize that
marine plywood would be best, but it is hard to find and is expensive. I
would need two sheets. Is treated 1/2" plywood acceptable?

I would reuse the metal that was there (aluminum?)if you can. You really
don't want to change the weight of the floor that much, it could change
the way the boat sits and performs. If you have to use wood, try 6mm
ocoume, hard to find, expensive, but probably your best choice in my
opinion...

--
Wafa free since 2009

"Dan Listermann" wrote in message
...
I have a 14" heavy duty john boat. The boat came with foam under a thin
metal deck. The foam was saturated with water and disintegrated. I don't
think I can get the exact same foam thickness to reinstall the metal deck
and I don't care for the look of the metal sheeting. I realize that
marine plywood would be best, but it is hard to find and is expensive. I
would need two sheets. Is treated 1/2" plywood acceptable?
I use exterior fir rather than pay for marine ply. The difference is marine
ply has more plys and is solid cored, and twice the price. The exterior fir
is constructed with waterproof glue and marine ply is fir.

On Thu, 13 Aug 2009 07:09:36 +0700, Bruce in Bangkok
wrote:

On Wed, 12 Aug 2009 17:25:07 -0400, "Dan Listermann"
wrote:

I have a 14" heavy duty john boat. The boat came with foam under a thin
metal deck. The foam was saturated with water and disintegrated. I don't
think I can get the exact same foam thickness to reinstall the metal deck
and I don't care for the look of the metal sheeting. I realize that
marine plywood would be best, but it is hard to find and is expensive. I
would need two sheets. Is treated 1/2" plywood acceptable?

Probably using other then "marine" or "exterior" grade plywood will be
less then satisfactory as the glue will not be waterproof and will
delaminate.

Nobody stocks 5x10 sheets of marine plywood, but it was no problem
ordering it. Didn't take long, or cost all that much. I wonder how
they shipped it.

Casady