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Old 01-23-2018, 06:54 PM   #21
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Old 01-24-2018, 08:28 AM   #22
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I’m having an extremely hard time finding 3/8” marine grade ply. Will exterior ply do the job?
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Old 01-24-2018, 08:43 AM   #23
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I’m having an extremely hard time finding 3/8” marine grade ply. Will exterior ply do the job?
My understanding is that marine grade plywood is "marine grade" because it has no fewer voids in between the layers of plywood internally. It may also have moisture-resistant properties, but that is not the "lead story", so to speak.

Few or no voids in wood is very important to high-stress applications like main hulls, etc. in boats. For what I think your application is, this super-strength is not necessary and will add $$ to your project for no real reason. If going in to a dry location, I think any decent plywood would work. If wet or high-moisture areas, coat with epoxy or suitable waterproofing first and don't penetrate (screws, etc.) without sealing.
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Old 01-24-2018, 08:46 AM   #24
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Iím having an extremely hard time finding 3/8Ē marine grade ply. Will exterior ply do the job?


Just think the original was Chinese plywood.... Marine grade ply is really only needed where strength is an issue or underwater applications where voids would absorb water and rot. Exterior ply will work. as will interior grades for areas not subject to getting wet. Avoid pressure treated unless kiln dried or you have months for it to reach moisture equilibrium.
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Old 01-24-2018, 09:09 AM   #25
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Excellent! Thank you both! Lowe’s here I come. I have all the sealers and such in my new dock box already!
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Old 01-24-2018, 09:16 AM   #26
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Donna - doing the same with my boat. Can you be more specific about the wall covering you're using? Sounds worthy of consideration for my project.
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Old 01-24-2018, 09:49 AM   #27
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Greetings,
Ms. D. Used to be that only exterior grade ply had waterproof glue. The industry may have changed whereby all ply has WP glue. I'm pretty sure Luan does not have WP glue, hence the suggestion that it be well sealed particularly the edges. I think the "void" comments are correct wrt. marine ply.
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Old 01-24-2018, 10:10 AM   #28
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Wallpaper is grand today , made for kitchens and bath , getting wet is no problem.

But wall coverings are advancing too, a nice light color could make a great gal cave.

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Old 01-24-2018, 10:17 AM   #29
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Many of you will disagree with this decision, but Iím hoping I will love it in the end. Totally making it my own, but what a mess!
Who cares what other people would do. We have a saying in our house/boat; "When you pay the bills, you get an opinion".
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Old 01-24-2018, 10:41 AM   #30
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Who cares what other people would do. We have a saying in our house/boat; "When you pay the bills, you get an opinion".
The only caveat there is resale. When I am making changes for me, I think about resale and whether it is too "narrow" or not, and if so, is there a way to make the change so that it is easily put it back to something more "general" if that day should come.

If resale is not in your long range future (it always is, IMHO), it doesn't matter.
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Old 01-24-2018, 11:04 AM   #31
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Donna - doing the same with my boat. Can you be more specific about the wall covering you're using? Sounds worthy of consideration for my project.
Search google for removable peal and stick wallpaper. There will be many hits. I used it in my galley well over a year ago and had to remove a piece recently. I had never no problem removing it and replacing it. (I changed out a thermostat) always buy a little extra so the dye lots will be the same.
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Old 01-24-2018, 11:06 AM   #32
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Oh c’mon, really? Looked good in the preview. Anyway, the silver is paper and you can see the thermostat change. The “glass tile” is also peel and stick and that too is a fabulous product!
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Old 01-24-2018, 11:40 AM   #33
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For interior wood projects, in hard to find thicknesses, Baltic Birch is often the answer.
It comes in metric sizes only, so you should look for 10mm. It has thinner ply than ordinary and "marine" plywood, and no voids. The surface is much lighter in colour than other types of wood, but you are going to cover it with paper, so don't mind the colour.
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Old 01-24-2018, 03:52 PM   #34
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Too dark ? Lighten it up with 4X8 or 4X10 pebble textured, tub surround sheets of FRP from Home depot.
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Old 01-24-2018, 06:29 PM   #35
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and if you dont want all or some pebbled...they have a smooth version too....
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Old 01-24-2018, 06:43 PM   #36
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what do you back the thin frp with? I have a white material in my heads(it may be Formica over foam) and it has cracked all the way through so I would need to attach it to something .
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Old 01-24-2018, 06:50 PM   #37
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While doing this work, has anybody added insulation for cold climates?
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Old 01-24-2018, 07:46 PM   #38
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While doing this work, has anybody added insulation for cold climates?
2" blue foam insulation cut into 2" planks, glued to the hull. it is imperative that the edges be sealed (we used silicone) to prevent air getting between hull and foam.
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Old 01-24-2018, 07:59 PM   #39
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2" blue foam insulation cut into 2" planks, glued to the hull. it is imperative that the edges be sealed (we used silicone) to prevent air getting between hull and foam.
Thanks.
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Old 01-25-2018, 09:26 AM   #40
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"Used to be that only exterior grade ply had waterproof glue. The industry may have changed whereby all ply has WP glue. I'm pretty sure Luan does not have WP glue"

Simple , get a scrap piece and boil it for 30 min or so .If it falls apart , don't use it on board.

The difference between marine ply is also the layering of the plys.

If the multiple layers are the Same thickness its good stuff, if its a thin layer of something over a thick middle core , beware.

Furniture ply will have better construction than house grade.
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