mmf
Well-known member
Please let me add:Rat said:Marine ply Vs Outdoor ply. For building decks and stuff (boxes storage etc) that is well supported there is no reason not to use regular outdoor grade ply. Marine ply is superior in every way, more plies per inch, uniform ply glue thickness, usually not warped, better woods etc. But it costs much more; and for what we use it for anyway, regular ply will pass with flying colors. Make sure it is outdoor ply (not treated) as this ply has waterproof glue, even though you will be waterproofing it anyway before the carpet goes on. There are tons of different waterproofing opinions on here as well. If it were me, and I was doing what you are doing, I would use Boiled Linseed Oil.
BTW, you stole that hull man! That thing would be $3000 easy where I live.
I use the regular exterior grade (waterproof glue) plywood on all my restorations and it holds up great! I make sure I seal it excellent before I install it too. First I dry fit the wood and drill the attachment holes BEFORE I seal it, then I use Marine Spar Varnish (available at Lowes), $27 bucks a gallon here. I seal EVERY piece like this, for the first three coats, mix 50% mineral spirits and 50% varnish, this will allow the varnish to DEEP soak the wood much more than straight out of the can, then I start building up my "straight" coats sometimes 3 or 4 coats until I have a perfectly slick finish on the wood (no grain showing at all). This will give you the protection you need from the elements. Note also I always take my router and a corner rounding bit and go over the outside edges of the wood too, this makes less wear on the carpet or covering when foot pressure is applied to the area( less likely to cut it) than the 90 degree angle left from a straight cut. It also has more "eye appeal". Let me stress the importance of sealing EVERY penetration BEFORE INSTALLATION! Last, the EDGES ARE THE MOST IMPORTANT in sealing!