Marine plywood is strictly a product of Douglas fir and Western larch woods; glue is applied on the surface of marine plywood to keep it waterproof, unlike pressure treated plywood. for pricing and availability. Weight: It is always heavier than Pressure Treated Plywood. 26 Apr 2012 . Is marine-grade plywood as safe as pressure-treated plywood from insects and rot? Your email address will not be published. Marine plywood is a wood type created specifically for usage in areas with high humidity levels. For help selecting ACX vs marine grade plywood for your project, talk to the experts at Curtis Lumber, a wholesale lumber supplier. However, this wood is a good-quality, hardwood plywood created with waterproof glue. All rights reserved. Here are the necessary steps that you need to follow when sealing marine plywood:eval(ez_write_tag([[300,250],'woodcritique_com-box-4','ezslot_2',109,'0','0'])); You will need the following items as you look to stain your marine plywood: The first thing you should do is wipe the surface of the marine plywood using paper towels or soft cloth that you have dipped in acetone. Marine plywood is different from pressure treated plywood. With time, the chances of chemicals present in the marine plywood can leach to the areas around it, one way of minimizing leaching is by sealing the surface of this wood using varnish or paint. I have not built any migratory lids without cleats though. This product is lightweight, yet stiff and long-lasting. Contact with water on a constant basis will wear out the chemicals on pressure treated wood. Therefore, you will have to spend extra so that you land the marine plywood for your different woodworking projects. I've ordered a piece of "marine grade" plywood, I'll see how it does. Considering that marine wood is waterproof, it guarantees a longer service life than the treated plywood. Severe Weather. Footer. Another benefit of using marine plywood is that it can reduce the amount of resealing the structure needs. Apply up to five thin layers of epoxy sealer. It is prone to splintering, especially from the edges during transportation. Re: Pressure treated plywood verses marine grade? previous post: Marine Plywood vs Pressure Treated Plywood; It's great having someone so knowledgeable just one phone call, Email, or IM away! Plywood 13 LBS Coosa 9 LBS Break test. x 2 ft. x 4 ft. Pressure-Treated Pine Plywood: 1/8 in. Pressure treated plywood is common plywood that has been subjected to pressure treatment with chemicals to prevent the wood from decaying, or rotting. x 32 in. Learn how your comment data is processed. It also depends if you are storing inside or outside. plywood, is not ” Marine grade” plywood, and those designations do not make the two products arbitrarily interchangeable. 1/2-in Common Southern Yellow Pine Plywood Sheathing, Application as 4 x 8. [wish2fish] posed an engineering question: I know we have discussed pressure-treated versus marine plywood many times. On the other hand, treated plywood is created using softer wood compared to its marine counterpart. I assume treated plywood will also “gas-off” and would not be desirable. On the other hand, treated plywood is created using softer wood compared to its marine counterpart. Follow this step by adding many thin layers. AB marine grade Douglas Fir plywood is frequently used for lapstrakes and hull planking on wood boats. Thanks! Pros and … The drying time of acetone is about one to two hours. It will also be wet from the pressure treating solution, this will be bad for any kind of sealing or painting unless you let it dry out completely for a couple months in the hot summer sun. Marine plywood is expensive, despite that, the longevity of the project justifies the cost. Follow the above procedure by rolling the sealer across the marine plywood. It also depends if you are storing inside or outside. I originally did not want to deal with fiberglass cause I hate working with it. Re: Pressure treated vs marine plywood I'm assuming this is for the sole, or floor and/or casting deck. Here are the necessary steps that you need to follow when sealing marine plywood: This material has good strength and durability if you compare it with a Medium Density Fiberboard (MDF). x 2 ft. x 4 ft. PureBond Poplar Plywood Project Panel (Free Custom Cut Available) 23/32 in. Since marine plywood is expensive, and hard to find, I was wondering if using pressure treated plywood (for outdoor decking) would do the job. The sealant can last much longer on marine plywood than on wood boards that do not undergo the same lamination process. Pressure-treated plywood, often called “Wolmanized” or P.T. In some situations, you may be able to save money by using ACX plywood, but in other cases, you will need to use premium marine grade plywood. I wouldn't be this far along in my project without your assistance. Pressure treated is less than desireable, it will have large voids between the plies. Since it is an aluminum boat, if stored outside and you are concerned about longevity, I'd use marine grade plywood covered in epoxy. Marine plywood is also stronger and more durable than regular plywood, which has only three layers. Timely Reflections: Where does Time Reside? You should have a small amount of sealer inside your basin because it dries quickly. 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