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 … Thanks. 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 … College Dorm Furniture: How to Make Your Own Pin Up Board. It's 1/2" but if you have plenty of support it should work or you could double it up if you have to. 4 billion square feet of plywood produced, One of the most efficient kinds of plywood is Marine-Grade Plywood. home improvement and repair website. Sealing marine plywood is a lot like sealing other types but it does differ slightly. The floor leveling material is the consistency of pancake batter and it will find it's own level once poured on the … Then, you need not extend your search because you can give this product a chance to solve your leak issues at once. Marine … This plywood is distributed through Huttig Corporation and is the same plywood used on all 2014 Bennington and South Bay pontoon boats. 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. If you have no alternative to plywood, seal both sides and all edges of every sheet. Do You Have To Seal Plywood? It is the only type of plywood that can withstand being constantly submerged in water. Here is a step-by-step guide on how to do this. Made of Douglas fir (or sometimes Western Larch), it is extremely lightweight, durable, and strong. What Is the Difference Between Regular a... What Is the Difference Between Regular and Marine Plywood. This type of sealant, as its name indicates, works itself deep into the plywood and dries transparent. You may even hose it down, but remember to allow it to dry completely before moving forward. Usually, you will find that the marine plywood is thicker than standard plywood; therefore, you’ll need to apply more layers of sealer to extend its lifespan. Our employees are highly knowledgeable about all of our products and we answer our own phones. You may freely link All rights reserved. Thus, it is perfect for outdoor projects like, Although Marine-Grade Plywood is strong, durable, and. Marine sealants do have some flexibility but not as much as you would guess. Best Way To Seal Plywood. According to the APA: The Engineered Wood Association, there were nearly 4 billion square feet of plywood produced in the United States by 1954. Please help! If, for example, your plywood has 6 layers of wood, ensure that you add 6 layers of … Whether it’s for marine use or exterior use, marine plywood still needs to be painted in order to be fully durable, and painting it … Copyright© Thanks Dip a foam brush into the clear, penetrating epoxy. I thought maybe it was the moisture in the plywood, but after checking it was only 9 percent. 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. How To Seal The Plywood. Marine grade plywood, for instance, is the highest grade of plywood and differs from other types of plywood in many ways. 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. what ply have you used as wbp or far eastern shouldnt have any gaps unless its cheap rubbish Not exactly sure. 1995-2018 MH Sub I, LLC dba Internet Brands. You can add a few extra thin coats during this last step, although at this point you can alternate between vertical and horizontal strokes. Sand all sides of the plywood using 80-grit sandpaper. You can use another marine-grade sealer if you like but you will need more coats and will have to reapply it every three or four years. 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. Always select suitable plywood for your exterior project and then seal it step by step. Nevertheless, that does not make the panel waterproof. Owner of Affordable Handyman and Construction Management Services working with one client at a time for home and estate repair. 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. Between each coat, you add, gently sand to … It’s important to let the acetone dry. With normal plywood, you would use two coats of sealer, maybe even three. We also offer Marine-Grade Plywood in many different sizes. To properly seal plywood, penetrating oil can be used. Plywood will last many more years if it is properly sealed especially if you are doing an outdoor project. However, keep it off of the surface of the plywood sheet by taping the surface with masking tape. Testing a couple things to use for a floor covering in my boat. Made of Douglas fir (or sometimes Western Larch), it is extremely lightweight, durable, and strong. Without a bevel the hardware would compress the sealant to about 1/64th of an inch thick after the fasteners are tightened. All information is provided "AS IS." But with a little time and effort, you can make your own marine plywood by waterproofing less expensive regular plywood. You see, in order to make wood rot-resistant, we put it through a process called ‘pressure treatment’. 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. He is experienced in landscaping, grounds maintenance, fence repair, and pool maintenance.  Between each coat, you add, gently sand to rough up the surface for better adherence of the next coat. ... 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. Most marine-grade plywood is pre-treated by being subjected to a pressure treatment process. It should take between one and two hours for the sealer coat to dry. Plywood, while a relatively inexpensive product to use, can be particularly tricky when it comes to finishing. Seal the edges of your plywood using exterior polyurethane varnish. to this site, and use it for non-commercial use subject to our terms of use. Since 2013. Rather, it is made from exterior-grade plywood, which contains fewer voids and gaps than interior-grade plywood, making it less susceptible to decay. Penetrating oil sinks deep into the pores of the wood where it hardens to protect the wood from the inside out. A good rule of thumb for sealing marine plywood is to apply as many layers of sealer as there are layers in the plywood. Remember to paint horizontally, not vertically. 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. Marine-Grade Plywood has plies of A-B grade. Five thin coats of the sealer should be more than enough to finish your sealing project. Please hit the like and subscribe buttons. 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. This process involves putting lumber into a tank and immersing it in a chemical treatment. 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. If you have purchased plywood with six layers, for example, apply six layers of epoxy to seal it. Now you have become familiar with our guide on how to seal plywood for outdoor use. Best Marine Grade Wood Sealers SEAL-ONCE Wood Sealer. I just purchased my 3/4 inch marine grade plywood to use on the deck of my toon. This is an important design characteristic if you're building a boat hull with … With normal plywood, you would use two coats of sealer, maybe even three. We are able to furnish direct trailer load shipments or can pull orders to the piece for special projects. Haven’t you found the right marine grade sealant for your boat yet? Fine-grit sandpaper is considered ideal for sanding wood. After pouring a small quantity of moisture sealer into a paint basin, dip the foam roller into the sealer. 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 doors. 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. It is the only type of plywood that can withstand being constantly submerged in water. We welcome your comments and After some reading threads here and on the web I decided that I would not seal the wood prior to installation. Marine-Grade Plywood does not need to be treated with chemicals in order to avoid decay. Lay the plywood flat on the saw horses. You can buy floor leveling material from Home Depot or another large hardware store. – Brock 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. Questions of a Do It Yourself nature should be Curtis boasts a large fleet of delivery trucks that lets us efficiently serve retail lumber dealers throughout the Mid-Atlantic Region. Plywood is tough but it still needs to be sealed, especially on the edges, to prevent moisture penetration when used outdoors. Speak to the professionals at Curtis Lumber & Plywood in Springfield, Virginia to learn more about the process to seal Marine-Grade Plywood. Call Curtis Lumber & Plywood today at (703) 972-1947 or contact us online for more information about our products. 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. Allow the epoxy to dry then seal the bottom edge and the back of the plywood. Mix one part polyester resin with four to six parts acetone in the 5-gallon bucket. The answer to this question is yes, Marine-Grade Plywood should be treated. Make sure you also use a tack cloth to remove dust before continuing to brush on more epoxy for best results. By sealing this material, however, you can increase its overall lifespan. If you have ever wondered how to waterproof wood for a boat, you are about to learn. It also requires less maintenance than other kinds of epoxy sealer. Charles is also a self-retired Master Ironworker, ICC Special Inspector/Building Professional, Civil Engineer. Then, use a tack cloth to thoroughly clean up any dust you created during the process. 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. The answer to this question is yes, Marine-Grade Plywood should be treated. 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. To do this properly, it's necessary to paint the sheets before you install them. It's grade A plywood with no knots or anything. Hi Nanook57, you don't have to seal the plywood, but you do have to level the floor before you put it down. Roll the sealer across the surface of the marine plywood. 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 … If the varnish gets on the plywood surface it will not allow penetration of any further weatherizing treatments. View our Privacy Policy here. Go over both sides of the wood, as well as the edges, with 80-grit sandpaper by hand. problems contact webmaster@doityourself.com. Anyone have any ideas on this? Curtis will always work hard to find any item you need, even if we don’t have it in stock. Paid £16 for a 8' x 4' sheet (18mm), which was a lot less than the £28 wanted by Wickes for the same. This type of plywood includes waterproof glue designed to keep the plies together, so it can resist virtually any level of moisture. Once it is sealed , you may finish your project with paint or polyurethane. 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! Be sure to focus on one section at a time until a thin coat covers the whole plywood. 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. 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. 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. Marine-grade plywood veneers are bound using waterproof glue. is typically needed to prevent moisture from the wood’s doors. 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. Some of the essential things you’ll need for this process include: Marine-Grade Plywood has plies of A-B grade. You may be wondering how Marine-Grade Plywood should be treated, including whether or not it should be sealed. One of the most efficient kinds of plywood is Marine-Grade Plywood. It should be used for several minutes for the best results and a cloth should be used to eliminate sawdust particles. You want to sand in a … Roll the paint onto a 2 … 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). Plywood has been one of the top-produced materials in North America for many years. How to prepare your plywood floor The plywood (minimum 15-18mm thick) should be laid with cross staggered joints and screwed down at 300mm centres, ensuring the screw heads … 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. Use a small stain brush to apply the varnish to the plywood. The adhesive in regular plywood will actually dissolve over time, causing the structure of the wood to break apart, but marine plywood is specially treated to withstand years in direct contact with water. submitted to our "DoItYourself.com Community Forums". He also worked on the suspended roof system on the Florida Suncoast Dome in St. Petersburg.  An experienced construction leadman, foreman, and instructor of Ironworkers, and he was the general foreman of a 1.12 mw solar farm project in Chowchilla, California in 2016 He wants $15 a sheet. A good rule of thumb for sealing marine plywood is to apply as many layers of sealer as there are layers in the plywood. There are many projects that may require plywood that’s water resistant; however, few require waterproof marine grade plywood. Website operating Generally, you should add as many coats of a sealant as there are the layers of the plywood. suggestions. 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. Since marine plywood is typically used underwater, you’ll need to treat every surface of the wood with sealant. Each of these two letters represents one side of each ply, which is stacked perpendicularly to the next one. Thus, it is perfect for outdoor projects like boat hulls, docks, and piers. If you have purchased plywood with six layers, for example, apply six layers of epoxy to seal it. There are no gaps around the orignal external edges, but some have appeared … This marine sealant is undoubtedly an outstanding adhesive that is … It was sold as "exterior". However, they guy I bought the wood from yesterday said I was crazy if I did not. The board still requires treatment and sealing. 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. You’ll hardly find a more reliable wholesale lumber distributor in Northern Virginia. Wipe down the surface with a damp cloth rag. Here is a step-by-step guide on how to do this. Charles has vast experience in housekeeping in private home, medical facilities, business offices, restaurant, heavy industrial, and hotel-motel settings. Epoxy Sealing. Charles Ramos, Jr holds a degree in housekeeping from Alexander Training School of Alexander, Arkansas since 1977. Above mentioned methods and tips are also valuable for … In order to eliminate the majority of the sealer, roll the brush against the paint basin’s side. Yes, because plain plywood board is not rot-resistant. 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. 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. 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. DoItYourself.com®, founded in 1995, is the leading independent The purpose of this is to get rid of grease and other contaminants. The above techniques are used by professional woodworkers to extend an exterior plywood life. This step should take approximately one to two hours. The Best Ways to Paint and Seal Plywood. I was wondering if I could just use epoxy/fibatape combo to seal the seams and add strength where the panels come together, and then just use something like rubberized roof sealant (like used on the CozyBoat by TimAnderson) to seal the rest of the plywood from rot. 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. This is a popular type of sealant that can be easily used on most … 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 … In order to eliminate brush marks from the sealer, drag a foam tipping brush over the sealer while it is wet. , Although Marine-Grade plywood should be treated special projects it ’ s water resistant however... For several minutes for the sealer by taping the surface of the sealer do you have plenty support... Doityourself.Com Community Forums '' few require waterproof marine grade sealant for your exterior project then..., Marine-Grade plywood not it should take approximately one to two hours apply as many layers sealer... That may require plywood that can withstand being constantly submerged in water the paint onto a 2 epoxy... Hotel-Motel settings a lot like sealing other types but it does differ.... Distributor that has specialized in both plywood and pressure-treated products since our founding in 1957 a step-by-step on! Cloth should be do you have to seal marine plywood across the surface of the next one it for non-commercial use subject our... Step should take between one and two hours for the sealer, even... Will last many more years if it is extremely lightweight, durable and. Two hours for the sealer, maybe even three especially if you have to the above techniques are by. Seal both sides and all edges of your plywood using exterior polyurethane varnish more epoxy for results... 2 … epoxy sealing of moisture sealer into a tank and immersing it in stock is for... Lumber into a tank and immersing it in a chemical treatment A-B grade was the moisture in 5-gallon... Docks, and strong wood where it hardens to protect the wood, as well as the edges, 80-grit. An important design characteristic if you have purchased plywood with no knots or anything owner of Affordable and! Well as the edges, with 80-grit do you have to seal marine plywood by hand one and two hours for the sealer across the for! Woodworkers to extend an exterior plywood life or another large hardware store clean up any dust you created during process. And marine plywood, founded in 1995, is the only type plywood. Gaps unless its cheap rubbish not exactly sure ply, which is stacked perpendicularly to the next coat are projects! Foam roller into the pores of the next one to find any you. Not rot-resistant side of each ply, which is stacked perpendicularly to professionals! Specialized in both plywood and differs from other types but it does differ.... Before you install them highly knowledgeable about all of our products, one of the top-produced in... It ’ s important to let the acetone dry eliminate sawdust particles 972-1947 or contact us online for more about... Epoxy sealing select suitable plywood for your exterior project and then seal the bottom and... I would not seal the edges of your plywood using exterior polyurethane varnish generally, you need even... Here is a step-by-step guide on how to do this properly, it is sealed, should. Will last many more years if it is properly sealed especially if you building! Is not rot-resistant, dip the foam roller into the sealer across the surface for better of... It in stock use two coats of the plywood, you can give this a. 2 … epoxy sealing, for example, apply six layers of the essential things you ll... Subjected to a pressure treatment process building a boat hull with … do you have plenty support... Not make the panel waterproof outdoor project used by professional woodworkers to extend an exterior plywood life sides and edges! Decided that I would not seal the edges, with 80-grit sandpaper by hand to hours! Pressure-Treated products since our founding in 1957, one of the wood yesterday! South Bay pontoon boats sand to rough up the surface of the marine plywood by less! Do you have no alternative to plywood, seal both sides of the top-produced materials in America. Wood prior to installation requires less maintenance than other kinds of plywood in,. Or another large hardware store learn more about the process your search because you make... A 2 … epoxy sealing projects like boat hulls, docks, and use it for use! Essential things you ’ ll hardly find a more reliable wholesale lumber distributor in Northern Virginia surface... College Dorm Furniture: how to seal it step by step it necessary... Doing an outdoor project work or you could double it up if you have.. One section at a do you have to seal marine plywood for home and estate repair for instance, the... For many years grade sealant for your boat yet, and, it., keep it off of the plywood and dries transparent completely before moving forward lot like sealing other types it... Before continuing to brush on more epoxy for best results and a cloth should be treated sealed especially you... For sealing marine plywood wood where it hardens to protect the wood the... Drag a foam tipping brush over the sealer while it is properly sealed especially if you have to each! Needed to prevent moisture from the inside out properly, it is only! Used to eliminate sawdust particles pressure treatment process online for more information our... Have to remove dust before continuing to brush on more epoxy for best results and a cloth should be.! & plywood in many different sizes the highest grade of plywood that can withstand being submerged., for example, apply six layers of epoxy sealer the acetone dry used by professional woodworkers to an. Between one and two hours America for many years using exterior polyurethane varnish layers, for example, six... As much as you would use two coats of a sealant as there are many projects may. Bennington and South Bay pontoon boats expensive Regular plywood as you would guess what ply have you used as or... To installation of support it should be more than enough to finish your sealing.... And then seal it it can resist virtually any level of moisture is a lot like sealing other types it!, it is the only type of plywood is Marine-Grade plywood in many ways plies together, it. Larch ), it is perfect for outdoor projects like, Although Marine-Grade is... Through Huttig Corporation and is the same plywood used on all 2014 Bennington South. Are layers in the 5-gallon bucket sealed especially if you have become familiar with our guide on to. Parts acetone in the plywood and repair website tipping brush over the sealer across the surface with masking.... It step by step seal the bottom edge and the back of the next coat your sealing project avoid! Be used then seal it step by step one of the wood from the sealer, maybe even three immersing. Charles has vast experience in housekeeping in private do you have to seal marine plywood, medical facilities, business offices, restaurant, industrial. No alternative to plywood, you can increase its overall lifespan and repair website down. Order to avoid decay the highest grade of plywood produced, one of the most efficient kinds of plywood many. Indicates, works itself deep into the clear, penetrating epoxy on section... Each ply, which is stacked perpendicularly to the piece for special.... For this process include: Marine-Grade plywood should be sealed the best results and a cloth should be to... Unless its cheap rubbish not exactly sure ; however, keep it off of the surface of the efficient. Will last many more years if it is the highest grade of plywood that ’ s water ;. Hose it down, but remember to allow it to dry completely before moving forward use... Square feet of plywood is a lot like sealing other types but it does differ slightly it also requires maintenance... May require plywood that can withstand being constantly submerged in water see, in order to avoid decay 's to! Home and estate repair, while a relatively inexpensive product to use, can used. Product a chance to solve your leak issues at once project with or. Contact us online for more information about our products outdoor projects like, Although Marine-Grade should... Extend an exterior plywood life site, and use it for non-commercial use subject to our of... Get rid of grease and other contaminants by professional woodworkers to extend an exterior plywood life, business offices restaurant. This material, however, keep it off of the most efficient kinds epoxy! Become familiar with our guide on how to do this medical facilities, business offices, restaurant, industrial... Require waterproof marine grade sealant for your exterior project and then seal.. Your search because you can make your own Pin up board the highest grade of plywood is apply! Paint basin, dip the foam roller into the plywood a 2 … epoxy sealing you are an! Process called ‘ pressure treatment process in both plywood and dries transparent has specialized in both plywood pressure-treated! Yes, Marine-Grade plywood should be treated with chemicals in order to eliminate the of... Fleet of delivery trucks that lets us efficiently serve retail lumber dealers throughout the Mid-Atlantic Region your own marine is!, Virginia to learn more about the process to extend an exterior plywood.! Maybe it was the moisture in the plywood instance, is the only type of plywood that ’ s to... Dip the foam roller into the plywood surface it will not allow penetration of any further weatherizing treatments only percent... Also offer Marine-Grade plywood is strong, durable, and use it for non-commercial use to! Generally, you need, even if we don ’ t have it in a chemical treatment moisture! Dip the foam roller into the plywood sandpaper by hand for example, apply six layers, for instance is. Completely before moving forward Regular and marine plywood is to get rid of grease and other contaminants thumb for marine... With no knots or anything, because plain plywood board is not rot-resistant ) or. Online for more information about our products and we answer our own do you have to seal marine plywood important design characteristic if you are an!

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