Plywood to build seats

[wsr3]

I am wanting to build a bench seat for my 14' runabout. I plan on building the box and frame from plywood and getting some cushons made. What type of plywood should I use?
Thanks,
Bill

 

[Bob_VT]

Re: Plywood to build seats

Exterior....... then seal it up with fiberglass and resin or just good old spar varnish .....lots of coats

 

[Peteco]

Re: Plywood to build seats

Build it with blue foam sheets from Home Depot then glass over it (with epoxy, not polyester. Poly will melt the foam)

Foam is cheaper than plywood and much easier to shape and cut. And it will never rot.

 

[NSBCraig]

Re: Plywood to build seats

I built my seat base out of 3/8" exterior ply, then put two layers of 1708 on each side and it is way over built.

 

[oops!]

Re: Plywood to build seats

yep.....exterior grade and glass....

then paint or gellcoat.

 

[oops!]

Re: Plywood to build seats

p.s.

if you dont glass it.....the screw will come out in a few seasons and you will be fixing it forever

 

[69rrvert]

Re: Plywood to build seats

Just the other day I was talking with a freind of mine that owns a upholstry shop the same question. He told me that in a boat the best thing to build seats out of is a sheet of 3/8" plastic. I am nowhere near this step in my rebuild but when it comes time to build seats, the plastic sounds pretty good to me. It should last a long time. Thanks, Steven

 

[Woodonglass]

Re: Plywood to build seats

I'm restoring an old 61' Lonestar Fiberglass 15 footer. My seats will be 1/2 inch ext. grade ply with 1708 and resin. I Figure if i epoxy the screws they will outlast me unless I live to be 100 and then, I won't give a hoot in heck anyway. I think a lot of us on here go WAYYYYYYYYYYYYYYYYYYY to OVERBOARD with some of our engineering but maybe it's just me. I'm just sayin....