Marine Plywood....

[Stonewall2002]

Anyone know where I can find some marine plywood in the Louisville, area? Any estimate on prices? Is there anything that I could apply to regular plywood to make it water proof/resistant?

Thanks for any and all help....

Keep on chuckin'

[WIZARD]

LK Tapp (270-737-7313) between Radcliff and E-Town has it. I bought a 4 x 8 sheet of 3/4" last winter and it was close to $100.

[birdstrike]

What application to you plan for this plywood? If it's a boat project or something that wont stay wet all the time, you can likely use presure treated ply. Shouldn't be a problem at all. Lowes or Home Depot has all you want!

[GeoFisher]

Use the pressure treated stuff, and add your own additional treatment to ALL cut surfaces.........This works GREAT. Also, make sure you pre-drill any holes, and swab with treatment. Don't use Thomsons, or the other watery type sealants......Use BAER, or something better.

This will GUARANTEE waterproofness for MANY, MANY years. I have refloored some boats, and rebuilt some jon boats using that method.

Later,

Geo

[wish2fish]

As I understand it, marine plywood does not have any anti decay/incect additives in it. It is a few specific types of wood that don't expand when wet and a water proof glue is used to hold it together. Other plywoods have the same glue but not the specific type of wood to minimize expansion and delamination of the plywood. I don't think Pressure Treated plywood will resist the expansion if exposed to water on a regular basis. Also need to be concerned about types of fasteners used.

I think a product similar to marine is the MDO plywood. It has a paper finish on one or both sides. It is used to make signs so it is intended for exterior use where it will see water on a regular basis. Local prices here are $50 for 1/2" and $75 for 3/4 4'x 8' sheet.

Like the others said. if you treat with a good sealer you can improve its life.

[flippinstick]

Just buy pressure treated plywood and then fiberglass it. no water should get to the finished product then

[Boatnut]

I wouldnt use pressure treated. I believe it only comes in sheathing grades and if attaching to aluminum stringers, i'd be weary of a chemical reaction. I'd use A/C or mdo and give it a coat of fiberglass resin or epoxy on all surfaces and edges.
my 2 cents
Mike(aka Boatnut)

[bcorum]

Boland Maloney Lumber on Collins Lane carries Marine Plywood. Don't know cost exactly, but phone is 426-6121. Hope this helps.