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BobberStopper
01-08-2012, 01:16 PM
I have a 16X52 ALLWELD Aluminum flatboat with a 50HP Johnson, steering on right side, with a 55 # thrust Minn Kota Great White trolling motor.
I have put some closed cell foam on the floor and want to cover it with plywood and carpet.
I also want to extend the front casting area by about 2'.

QUESTION IS: What thinkness plywood should I use and does it have to be treated or marine grade? Would I be better served putting the "astro turf" looking carpet or plain old outdoor carpet over the plywood. Or, just paint the plywood and make it non-slip some how.

Any other advise or direction would be greatly appreciated.

talltimber
01-08-2012, 02:58 PM
My best direction would be to put an aluminum floor in with screws. That way you can take it out and check, or replace your foam when the time comes. I wouldn't put plywood in it if I planned on fishing it a lot, or it being out in the weather very much. If you are not out in the weather, and keep it covered otherwise, 1/2" plywood over foam would probably be the minimum I would do. I like the aluminum though.

waterboy1
01-08-2012, 03:13 PM
You don't need to use pressure treated wood in a boat unless you're looking to get termites, however you might want to put a coat of polyester resin over the 3/4 ply to keep water out of the wood. Carpet or no carpet is your preference, but I would do something to make it non-skid. If you seal the ply good with a coat of resin on both sides, the only place for much water to get in it would be screw holes. You can also coat your screws with silicone first to seal them as well.

jigflinger
01-08-2012, 03:47 PM
I agree with talltimber. I rebuilt my Duracraft and used aluminum. I is more expensive on the front end, but you'll never have to replace it again. For the decking I would use 3/4 inch exterior plywood sealed real good with resin. Since you are planning on extending the front deck by 2 feet you should be able to get by with 1 sheet of 1/8" aluminum. Good luck and good fishing.

olduckhunter
01-08-2012, 04:31 PM
if you are gonna use wood for the front deck i would go to lowes and get a 4x8 sheet 3/4 in thick and i forget what it's called but it has a 50 year warranty. you can nail it screw it and water still won't effect it. i think it's about 25.00 a sheet. i've built 2 deer box blinds for a friend out of it. you don't have to seal it with anything. like tall said al would be the way to go but you need to put something on it to keep from slipping. it will be slicker than snot.

Blackhawk19
01-08-2012, 04:52 PM
I'm gonna check at Lowes for that wood, I could use some of that also! Never heard of wood with that kind of warranty.

olduckhunter
01-08-2012, 06:52 PM
it's tongue and groove and it's stamped on each board "50 year warranty." anyone that works in the lumber dept there will know what it is.

olduckhunter
01-08-2012, 07:26 PM
Shop AdvanTech 23/32 x 4 x 8 OSB Subfloor at Lowes.com (http://www.lowes.com/pd_85795-99899-S-10153_0__?catalogId=10051&productId=3605118&UserSearch=advantech&Ntt=advantech&N=0&langId=-1&storeId=10151&rpp=24)


there you go blackhawk. it is 24.00 a sheet. advantech. click on specifications.

Brad in MS
01-08-2012, 07:48 PM
i'm sort of in the exact situation. a friend of mine bought a 1984 aluminum bass tracker and asked me to help him re-build the thing. it has a new 40 hp mercury engine and the hull is in fine condition... but the decking was completely worn out.

so far i have pulled all of the wood decking, old carpet, and the foam from under the deck wood.

question 1. what type of foam should be used to replace the original? any expanding foam that can be bought at lowes or home depot?

question 2. if using a non-skid paint for the surface of the deck instead of carpet, will a epoxy garage style floor coating stick to the wood decking if the wood has been sealed properly with resin?

zrdc28
01-08-2012, 07:58 PM
Some one just sent this to me yesterday, looks like what you might need.
Urethane Foam , Expanding Marine Polyurethane Foam (http://www.shopmaninc.com/foam.html)

HLLeonard
01-08-2012, 08:50 PM
If you decide to use any type of treated material, read the small labels that are stapled on the end to see if it is compatible with aluminum... There is a corrosion problem with some of the treated material.

Blackhawk19
01-08-2012, 08:56 PM
Shop AdvanTech 23/32 x 4 x 8 OSB Subfloor at Lowes.com (http://www.lowes.com/pd_85795-99899-S-10153_0__?catalogId=10051&productId=3605118&UserSearch=advantech&Ntt=advantech&N=0&langId=-1&storeId=10151&rpp=24)


there you go blackhawk. it is 24.00 a sheet. advantech. click on specifications.

Thank you sir!

NaturalStateNative
01-09-2012, 04:35 AM
If you decide to use any type of treated material, read the small labels that are stapled on the end to see if it is compatible with aluminum... There is a corrosion problem with some of the treated material.

This is what I was going to add. From what I've learned, the coppper used in the pressure treating process is very corrossive to aluminum. Marine plywood would be good to use but it's expensive and very heavy. A lot of people just go with untreated plywood and apply several coats of water sealant and drill pilot holes for the screws filling them with poly eurethane before screwing together.

Dutch552
01-09-2012, 04:44 AM
For the foam replacement use the pink foam sheets at Lowes or HD. Have helped with several aluminum boat restorations and we either use the pink stuff or pool noodles if it is during the summertime (e.g. they're everywhere and they're cheap). I have seen the expanding urethane foam used and it is more expensive and makes a huge mess of everything. I wouldn't recommend it unless you have no access to where you are placing your floatation.

jigflinger
01-09-2012, 02:54 PM
Just got back from Lowe's. AdvanTeck is not to be used exposed to the weather. The 50 year warranty applies if it is used as sub-flooring. It is made from soft woods and will not stand up to weather. It will fall apart in a short time. Works great inside buildings but not in boats. Check it out. It has a Weather Exposure rating of 1. That's the lowest there is.

olduckhunter
01-09-2012, 07:06 PM
that's strange. i wonder why the blinds i've built are still standing.

jigflinger
01-09-2012, 08:15 PM
that's strange. i wonder why the blinds i've built are still standing.Just lucky I guess. But the 50 year warranty only applies when it is used as it's advertised; sub-flooring. Ask Lowe's. They'll give you the specs. You do realize that water will run off a blind where it will stay on a deck. Even CD grade exterior plywood will soak up water if the water sits on it. Not arguing one bit. But I personally have never had that kind of luck.

HLLeonard
01-10-2012, 05:10 AM
I have discovered there is a lot to be learned when using wood of any kind in a boat restoration/repair... I used standard treated plywood for my floor and used a barrier between the aluminum and the plywood and then discovered the glue has to be a type that will stick to the plywood and also the backing on the carpet, just any exterior carpet glue won't work on treated wood... My head still hurts from running into brick walls.

Dutch552
01-10-2012, 04:20 PM
3/4" CDX plywood-coat it with at least one coat of epoxy resin and you'll be good to go. Still cheaper than marine grade plywood.

HLLeonard
01-10-2012, 05:54 PM
3/4" CDX plywood-coat it with at least one coat of epoxy resin and you'll be good to go. Still cheaper than marine grade plywood.
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That was another suggestion I considered and it might be the best way if you don't need very much plywood but from what I could find out about doing that the resin to coat the plywood I was going to need would have made it fairly expensive and I was doing something I was totally unfamiliar with .. Supposedly you have to coat it on all sides.