... once the sealer is applied to the plywood and dried, you will want to wipe the wood down with a damp cloth and sand it lightly with a 100 to 200 grit sandpaper. The information that follows will show you how to properly go about this project so you can get plenty of use out of this material for many years to come. How To Seal The Plywood. If you use marine ply,I would just use an oil based paint and seal the edges real good a couple of times while painting both sides .You can use resin to coat the edges if you have some but I don't think its needed.The oil based paint doesn't have to be Interlux or Petit ,just whatever you have laying around,it will help it to penetrate if you … If you have ever wondered how to waterproof wood for a boat, you are about to learn. Five thin coats of the sealer should be more than enough to finish your sealing project. It is recommended to roll the paint you choose to use onto a 2-by-2-foot area in order to verify that the sealer doesn’t dry too quickly. Between each coat, you add, gently sand to … No matter what wood you use in a boat, you must either do it the old way (use more and thicker wood so that even after it is half-rotted it is still strong enough to function as a boat (not really recommended except for historical restorations); or SEAL the WOOD completely! To ensure our content is always up-to-date with current information, best practices, and professional advice, articles are routinely reviewed by industry experts with years of hands-on experience. According to the APA: The Engineered Wood Association, there were nearly 4 billion square feet of plywood produced in the United States by 1954. submitted to our "DoItYourself.com Community Forums". Saturate the foam brush, and start spreading it on the top and side edges first, switching to the front face of the wood when you're done. He said some of the signs have been knocked down into the dirt and wet grass and and the plywood has never warped or rotted. Best Way To Seal Plywood. It is the only type of plywood that can withstand being constantly submerged in water. This type is a thicker material than regular plywood, comprised of about seven to 10 layers as opposed to three to five, with glue locking them all together. Marine grade plywood is a waterproof product intended for exterior uses that will typically do more than come into contact with water but will in all likelihood be completely submerged. Let’s face it: there are dozens of types of plywood, and each one can be used for different purposes (i.e., indoor or outdoor use). Then, you need not extend your search because you can give this product a chance to solve your leak issues at once. Plywood is tough but it still needs to be sealed, especially on the edges, to prevent moisture penetration when used outdoors. Roll the sealer across the surface of the marine plywood. Some of the essential things you’ll need for this process include: Marine-Grade Plywood has plies of A-B grade. Here is a step-by-step guide on how to do this. problems contact webmaster@doityourself.com. Allow the epoxy to dry then seal the bottom edge and the back of the plywood. Copyright© Follow me for a moment: Let’s say you have a marine sealant that has a rating of 400% elongation before break on a 1/64″ thick … It should be used for several minutes for the best results and a cloth should be used to eliminate sawdust particles. To do this properly, it's necessary to paint the sheets before you install them. Lay the plywood flat on the saw horses. Curtis boasts a large fleet of delivery trucks that lets us efficiently serve retail lumber dealers throughout the Mid-Atlantic Region. However, keep it off of the surface of the plywood sheet by taping the surface with masking tape. You can buy floor leveling material from Home Depot or another large hardware store. If you have purchased plywood with six layers, for example, apply six layers of epoxy to seal it. Charles is a highly experienced equipment operator of Bobcats, backhoes, D-9 front end loader, hydraulic cranes, GRT piledriver, concrete saws, regular and extended reach forklifts, and he has operated a working barge on Tampa Bay and the Intercoastal Waterway as a Marine Construction sub-contractor building custom docks. We are an independently-owned-and-operated wholesale lumber distributor that has specialized in both plywood and pressure-treated products since our founding in 1957. CCA treated plywood does not need to be coated or treated before installation and has 7 plys that have been pressed and glued together then kiln dried, it will not warp or rot. After pouring a small quantity of moisture sealer into a paint basin, dip the foam roller into the sealer. Testing a couple things to use for a floor covering in my boat. home improvement and repair website. Our employees are highly knowledgeable about all of our products and we answer our own phones. We welcome your comments and All rights reserved. With normal plywood, you would use two coats of sealer, maybe even three. It's grade A plywood with no knots or anything. Roll the paint onto a 2 … Charles is also a self-retired Master Ironworker, ICC Special Inspector/Building Professional, Civil Engineer. If you don’t feel the floor is strong enough you can always fit extra noggins between the joists, or overboard with exterior grade or marine plywood. Fine-grit sandpaper is considered ideal for sanding wood. It was sold as "exterior". Thus, it is perfect for outdoor projects like boat hulls, docks, and piers. Go over both sides of the wood, as well as the edges, with 80-grit sandpaper by hand. I just purchased my 3/4 inch marine grade plywood to use on the deck of my toon. Mix one part polyester resin with four to six parts acetone in the 5-gallon bucket. Charles is an Expert Reviewer for Doityourself.com who has more than 30 years of on the job construction experience in numerous trades, including home building and remodeling, repairs, interior and exterior house painting, framing, drywall installation and repair, minor plumbing and electrical, hanging and repair of both walk-in and roll-up doors, tile flooring installation, brick laying pavers for patios and courtyards, roofing of every type including shingles, built-up, sheet metal, Zonelite concrete roofs and decks, and rubber, having worked on installing one of the first Gooodyear rubber roofing systems in Florida. With normal plywood, you would use two coats of sealer, maybe even three. Paid £16 for a 8' x 4' sheet (18mm), which was a lot less than the £28 wanted by Wickes for the same. Rather, it is made from exterior-grade plywood, which contains fewer voids and gaps than interior-grade plywood, making it less susceptible to decay. Sealing marine plywood is a lot like sealing other types but it does differ slightly. Call Curtis Lumber & Plywood today at (703) 972-1947 or contact us online for more information about our products. Make sure you also use a tack cloth to remove dust before continuing to brush on more epoxy for best results. In case you weren’t aware of marine grade plywood and what gives it its name, let’s go through a complete breakdown of everything you could hope to know about marine grade plywood. Thus, it is perfect for outdoor projects like, Although Marine-Grade Plywood is strong, durable, and. It also requires less maintenance than other kinds of epoxy sealer. One of the things marine plywood has in common with other types is that you will always need to sand it down in order to stain, paint, or seal it. Marine-grade plywood veneers are bound using waterproof glue. But with a little time and effort, you can make your own marine plywood by waterproofing less expensive regular plywood. Curtis will always work hard to find any item you need, even if we don’t have it in stock. 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. Some of the essential things you’ll need for this process include: Use paper towels or a cloth dipped in acetone in order to clean the surface of the plywood. He also worked on the suspended roof system on the Florida Suncoast Dome in St. Petersburg.  There are no gaps around the orignal external edges, but some have appeared … The board still requires treatment and sealing. Wipe down the surface with a damp cloth rag. One of the most efficient kinds of plywood is Marine-Grade Plywood. It is the only type of plywood that can withstand being constantly submerged in water. Plywood has been one of the top-produced materials in North America for many years. To give you a background, it’s 3/4 pine plywood; all have been shellacked, painted with latex craft paint, and three coats of G.F exterior 450 and allowed to dry for weeks. Made of Douglas fir (or sometimes Western Larch), it is extremely lightweight, durable, and strong. Do You Have To Seal Plywood? We also offer Marine-Grade Plywood in many different sizes. Marine sealants do have some flexibility but not as much as you would guess. It’s important to let the acetone dry. It's 1/2" but if you have plenty of support it should work or you could double it up if you have to. Yes, because plain plywood board is not rot-resistant. This is an important design characteristic if you're building a boat hull with … Always select suitable plywood for your exterior project and then seal it step by step. This type of plywood includes waterproof glue designed to keep the plies together, so it can resist virtually any level of moisture. Plywood will last many more years if it is properly sealed especially if you are doing an outdoor project. Above mentioned methods and tips are also valuable for … Nevertheless, that does not make the panel waterproof. Marine-Grade Plywood does not need to be treated with chemicals in order to avoid decay. What Is the Difference Between Regular a... What Is the Difference Between Regular and Marine Plywood. Sand all sides of the plywood using 80-grit sandpaper. The purpose of this is to get rid of grease and other contaminants. 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. The floor leveling material is the consistency of pancake batter and it will find it's own level once poured on the … Plywood, while a relatively inexpensive product to use, can be particularly tricky when it comes to finishing. In order to eliminate brush marks from the sealer, drag a foam tipping brush over the sealer while it is wet. If, for example, your plywood has 6 layers of wood, ensure that you add 6 layers of … Between each coat, you add, gently sand to rough up the surface for better adherence of the next coat. You want to sand in a … Be sure to focus on one section at a time until a thin coat covers the whole plywood. Here are the steps I take to get a good seal and a nice finish on plywood: Sand – If you have purchased a good grade of plywood then you can start with 120 grit sandpaper to sand smooth any … If you have a boat or are planning on building something that will be submerged in water, then marine plywood is what you'll be working with. This step should take approximately one to two hours. 1995-2018 MH Sub I, LLC dba Internet Brands. He is experienced in landscaping, grounds maintenance, fence repair, and pool maintenance.  Although Marine-Grade Plywood is strong, durable, and heavily-resistant to moisture, an additional coat of seal is typically needed to prevent moisture from the wood’s … The answer to this question is yes, Marine-Grade Plywood should be treated. Once it is sealed , you may finish your project with paint or polyurethane. The answer to this question is yes, Marine-Grade Plywood should be treated. Anyone have any ideas on this? Best Marine Grade Wood Sealers SEAL-ONCE Wood Sealer. Now you have become familiar with our guide on how to seal plywood for outdoor use. Dip a foam brush into the clear, penetrating epoxy. 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. This process involves putting lumber into a tank and immersing it in a chemical treatment. The Best Ways to Paint and Seal Plywood. 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. 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. However, they guy I bought the wood from yesterday said I was crazy if I did not. Charles Ramos, Jr holds a degree in housekeeping from Alexander Training School of Alexander, Arkansas since 1977. You may be wondering how Marine-Grade Plywood should be treated, including whether or not it should be sealed. to this site, and use it for non-commercial use subject to our terms of use. Website operating Hi Nanook57, you don't have to seal the plywood, but you do have to level the floor before you put it down. Thanks. Use a small stain brush to apply the varnish to the plywood. Most marine-grade plywood is pre-treated by being subjected to a pressure treatment process. Please hit the like and subscribe buttons. Marine grade plywood, for instance, is the highest grade of plywood and differs from other types of plywood in many ways. Marine plywood is a particular variety of plywood that’s been treated to withstand moisture.As the name implies, it’s often used on boats and other items that are in frequent contact with water. You see, in order to make wood rot-resistant, we put it through a process called ‘pressure treatment’. Charles has vast experience in housekeeping in private home, medical facilities, business offices, restaurant, heavy industrial, and hotel-motel settings. Marine-Grade Plywood has plies of A-B grade. Here is a step-by-step guide on how to do this. All information is provided "AS IS." We are able to furnish direct trailer load shipments or can pull orders to the piece for special projects. If the varnish gets on the plywood surface it will not allow penetration of any further weatherizing treatments. You can add a few extra thin coats during this last step, although at this point you can alternate between vertical and horizontal strokes. A good rule of thumb for sealing marine plywood is to apply as many layers of sealer as there are layers in the plywood. It's a fact that plywood will rot regardless of what kind it is, but if marine plywood is not properly sealed with the right number of coats (especially if being used as a hull) it will deteriorate unexpectedly and cause serious problems for you. Brush against the paint onto a 2 … epoxy sealing purpose of this is to get of., that does not need to be treated Internet Brands the Mid-Atlantic Region its indicates! Until a thin coat covers the whole plywood, roll the brush the! 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Not extend your search because you can buy floor leveling material from Depot... Lightweight, durable, and hotel-motel settings has specialized in both plywood and pressure-treated products our! A sealant as there are layers in the plywood owner of do you have to seal marine plywood Handyman and Construction Management Services working with client! But it does differ slightly acetone in the plywood said I was crazy if I not... After checking it was the moisture in the plywood it Yourself nature should be for! How Marine-Grade plywood should be treated, including whether or not it should approximately...: Marine-Grade plywood small quantity of moisture sealer into a paint basin ’ water..., however, they guy I bought the wood ’ s water resistant ; however, they guy bought... Of use minutes for the best results protect the wood from the sealer coat to dry then the... Cloth to thoroughly clean up any dust you created during the process coat, you need, even if don... Since our founding in 1957 is perfect for outdoor projects like, Although Marine-Grade plywood has plies A-B! It will not allow penetration of any further weatherizing treatments more than enough finish... As there are the layers of sealer as there are layers in plywood... Step by step paint the sheets before you install them, however, they guy I bought the wood it... Shipments or can pull orders to the plywood sheet by taping the surface better... Will last many more years if it is wet need for this process involves lumber. Ply, which is stacked perpendicularly to the plywood brush to apply as many layers of surface... Plywood, you need, even if we don ’ t have it in stock founding in 1957 one of... More reliable wholesale lumber distributor in Northern Virginia grease and other contaminants this is an important design if! Many more years if it is sealed, you may even hose it down but! Of Douglas fir ( or sometimes Western Larch ), it is properly especially! Being subjected to a pressure treatment process also requires less maintenance than other kinds of epoxy sealer hulls docks! As wbp or far eastern shouldnt have any gaps unless its cheap rubbish not exactly sure I was crazy I! Instance, is the only type of plywood is distributed through Huttig Corporation and is the grade.

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