Since marine plywood is typically used underwater, you’ll need to treat every surface of the wood with sealant. A home is more than just a house, and decor is more than just furnishings. This type of plywood includes waterproof glue designed to keep the plies together, so it can resist virtually any level of moisture. However, usually the materials in the wood are not enough to block all moisture from the wood. Drag a foam tipping brush over the sealer while it is still wet to remove brush marks from the epoxy sealer. Much like any other form of plywood, if you want to stain, paint, or (in this case) seal it, it’s crucial that you sand it down first. I am building a makeshift weightlifting platform for outside use, and the centrepiece of that is two 18mm thick 2440x1220 sheets of plywood screwed together for stability. All Plywood sold in the UK is now made to one of 3 standards - EN314-1 EN314-2 EN314-3 thise are rated for Dry, Humid and wet conditions. Sealing most marine-grade plywood with epoxy is essential. This ensures that your finished product will have a uniform color, even if it is made of several types of wood. I can't explain this but there's a long list of boat related things I can't explain.. Marine-Grade Plywood does not need to be treated with chemicals in … What Is Hardwood Plywood and What Is It Used For? Before you get started, gather the following materials: Dip a paper towel or soft cloth in acetone and wipe down the surface of the wood to remove grease or other stains. Once it is sealed, you may finish your project with paint or polyurethane. Incorporating Uncovered Plywood Edges Into Design, Simple Ways To Add Plywood Elements To Your Home Decor. Step 1 – Sanding Your Marine Plywood The very first thing you’re going to want to do to your Marine Plywood if you’re planning on using it in water or outside is to sand it. You should always use marine grade when water is present. We prefer clear, penetrating epoxy because it works its way deep into the wood, dries transparent, and requires less maintenance than other types of sealant. Allow the coat to dry for one to two hours. .....Dave Yes I think Owatrol is the Marmite of the boat world. You can paint a deck, wall, or other objects that are crafted from plywood. Sealing plywood is critical for a long-lasting finish. I do a number of yard shadows each year, along with other projects using plywood. Priddy also writes for Archstone Business Solutions and holds an Associate of Arts in English from McLennan Community College. Print. It is almost always necessary to coat the marine plywood in additional sealer to block all moisture from the pores of the wood. However, you can give plywood even better water-proofing by sealing it with Aquarium sealant. It is the original product of Smiths and Co. and has been restoring and protecting for over 40 years now. Sand your plywood surface, removing any rough spots. If you want to waterproof plywood, then coat it with a quality liquid latex sealer. Let the sealer air dry for two days before applying paint or stain. Scott LeGros is key accounts manager and has worked in the plywood and lumber industry for 30+ years. I'm building a new tank/vivarium for my lizard and while it is not going to be as damp as something like a frog tank, I still want it to be 100% sealed so I never have to worry about it (even if the inhabitants change down the road to something that needs to have rain-showers several times a day). Sourcing Guide for Marine Plywood: Explore the widest collection of home decoration and construction products on sale. Sealing plywood is critical for a long-lasting finish. We did some basic test on standard 3/4" plywood versus marine plywood with dry and wet samples. Marine plywood is a type of wood specifically formulated for use in moist or wet areas. Dry the brush with a clean, soft cloth or rag. but a few coatings of polyurethane should seal the bottom and edges and last for yrs. How do you finish plywood? Plywood can handle the compression loads far better than either balsa or foam cores and this is why it’s very often laminated into the deck beneath deck hardware. Painting is one of the most common methods of sealing plywood and one of the most cost-effective. I agree on not using treated wood. In the north … That means if your plywood has 7 layers of wood, you should add 7 layers of sealant. Allow the epoxy to dry completely before flipping it over and applying it to the bottom edge and back of the wood. No doubt epoxy is better but consodering that the floor is not always under water I would think polyester would be fine. Dave fishtales2b, Apr 6, 2014. fishtales2b, Apr 6, 2014. Sealing marine plywood is a lot like sealing other types but it does differ slightly. Apr 6, 2014 #2 . Messages: 3,343 Likes Received: 177 Location: eastpointe. Continue applying sealer until the plywood is completely covered. Plywood is a durable material for projects, but it is necessary to seal plywood to protect it against water damage and rotting, and to ensure a long-lasting finish. Drag the brush across the surface horizontally. Dip a foam brush into the clear, penetrating epoxy. So, what is the best plywood waterproof sealer? The sealer protects by wrapping plywood in a plastic water-resistant covering. More often than not you’ll be dealing with marine grade plywood under deck fittings. Like other types of wood, you need to sand marine plywood before you seal, stain, or paint it. The plywood (minimum 15-18mm thick) should be laid with cross staggered joints and screwed down at 300mm centres, ensuring the screw heads are flush with the surface. Since it’s the ideal wood for moist or wet conditions, it’s often used to craft boats, boat parts, or outdoor furniture in coastal areas. What are the Best Uses for Marine Plywood? Exterior ply may also have voids in between the layers that aren’t immediately visible. You could use marine-grade sealer, but this will require more coats and must be reapplied every 3 to 4 years. Gently scuff up the wood with sandpaper between each coat for maximum adhesion, and be sure to wipe off any dust before adding the next layer. Would sealing the plywood this way be appropriate in this application, and if so, should I use the resin as is or thin it down? Sand the marine plywood with sandpaper and a sanding block. One unique thing about this type of wood is that it can resist water and moisture on its own. Marine plywood is a wood type created specifically for usage in areas with high humidity levels. Wipe the surface of the marine plywood with paper towels or a soft cloth dipped in acetone. I sealed mine with paint on truck bed lining I bought at Oreillys. In most cases, you would coat only one side and be done with it, but since marine plywood is going to be used underwater, everything has to be treated. Marine plywood is thicker than typical plywood, so you’ll need to apply more coats to maximize its lifespan. Wipe away any sawdust particles with a soft cloth. This plywood is formulated to resist water and moisture on its own. However, usually the materials in the wood are not enough to block all moisture from the wood. Its surprisingly good at sealing plywood edges, though I rather suspect epoxy is better. Many different grades of plywood exist. Continue to work in small sections until the entire piece of plywood is covered in a thin coat. Marine ply is high quality water proof ply with a guarantee that there are no voids in the inner layers. Follow with several additional thin coats. Exterior grade plywood is a good alternative to marine ply. Pour a small amount of epoxy moisture sealer into a paint basin. These layers provide dimensional stability, but leave the edges, which expose all of the laminate sections, particularly vulnerable to water damage. Press hard on the roller to cover the plywood with a thin coating of the sealer. Allow the acetone to dry completely for 1-2 hours before you move on to the next step. yellowbelly80. Only work with a small amount of sealer at a time, because it dries quickly. This plywood is formulated to resist water and moisture on its own. The many layers of Marine Grade Plywood are held together with waterproof adhesive, allowing the wood to withstand direct contact with water. It is also known as Lignu in Scandinavia and MultiWoodPrime for new wood applications and is often abbreviated to CPES. How can I stop this stop this problem with fewer coats? Roll the sealer across the surface of the marine plywood. Other than that, you also might want to skip sealing your plywood before staining. It is a fact of life. Well, if that it is the case, then why not see for yourself how this marine sealant product can work wonders for your boat? Marine plywood is a type of wood specifically formulated for use in moist or wet areas. Marine grade plywood means the glue which bonds the layers is water resistant which is not the same as pressure treated wood (or plywood) which has a preservative added to the wood under pressure. He has been involved in sales and purchasing for softwood, hardwood, and panel products serving a broad span of industrial applications, we’ve compared marine plywood cost and characteristics. It is almost always necessary to coat the marine plywood in additional sealer to block all moisture from the pores of the wood. The main benefit of using waterproof glue in marine plywood is that if the plywood is exposed to moisture, or even very high humidity or boiling temperatures, the glue won't fail, and therefore the wood layers of the plywood won't delaminate, or fall apart. Sealing Plywood Edges with Paint? by Journal Staff • Jul 22, 2014. More Articles. Apply it to the wood, starting with the top and side edges and moving to the front face. This is an important design characteristic if you're building a boat hull with plywood. Print. Her work appears in online publications such as Donna Rae at Home, Five Minutes for Going Green and Daily Mayo. While Marine grade plywood is technically “pressure-treated”, it is not soaked in or made with any special chemicals that increase its resistance to rot, mold, and moisture. just get exterior grade plywood the only difference in it and marine is the marine has less knots and one side is extra smooth. Not sure which kind of wood to use on your next project? When painting plywood, the edges always absorb the paint and ask to be repainted. Plywood is an important and stable building material, comprised of many different veneers glued together at right angles. Moreover, the epoxy, applied in multiple coats, forms a fantastic seal. Apply about five thin coats of epoxy sealer. But as a wood sealer I find it is surprisingly effective. At Forest Plywood, we’ve compared marine plywood cost and characteristics to help you choose the perfect type. These hardwoods accept stain very well, and don’t benefit much from the use of a sealer. Aquarium sealant is a silicon sealer that is regularly used on marine ships, aquariums, vivariums, and outdoor … Plywood, if dry, is a hard core to carve out and is yet one more reason why the bent nail trick is not as easy as some would make it seem. Each of these two letters represents one side of each ply, which is stacked perpendicularly to the next one. How to Stain Over Top of Stain. 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