Place a dust sheet or plastic sheeting on the ground … Place a dust sheet or plastic sheeting on the ground below the exterior plywood you want to seal. House Painting Info: Professional exterior painting tips. Let the sealer air dry for two days before applying paint or stain. The better the wood in the middle, the less likely it is to rot when water gets in from the edges. Make sure you’re using an exterior-grade plywood (B-C grade should work, or marine-grade) to start with, which will be made with water-resistant glue. This is an oil that as the name implies penetrates the surface of the wood … Copyright 2020 Leaf Group Ltd. / Leaf Group Media, All Rights Reserved. Make sure to seal these, especially if they have routed details. Apply a generous amount, 4 to 5 tbsp at a time, of water-repellent sealer to the plywood's edges and overall surface using a paintbrush. These boards are normally used for extreme duty exterior applications like trailer floors. Brush all around the edges, working the preservative into the wood. Wear latex gloves to keep the sealant off of your hands. Sealing Plywood for longer life. He is currently living in Albuquerque, N.M. Following are some steps taken during sealing of plywood: First, all sides of plywood are sanded by using sandpaper of 80-grit measurement. Glue Oily Wood like Oak, Teak, Maple, Cocobolo and many others. will readily wick up water and encourage the formation of fungal growth Buy some Bondo®-type auto body filler or wood filler and spread a thin coat on the plywood edges, then sand it smooth. Thanks Before applying the edge banding, give the edge … Once more remove any residue using the tacky cloth. Learn how to prepare plywood edges for painting so they'll look great--without rough edges, voids, and other imperfections. UK and Europe. Dry the brush with a clean, soft cloth or rag. Sealing the edges of these boards can significantly extend their useful life. … Not disimilar to Thompson water seal. Seal the edges of your plywood using exterior polyurethane varnish. Use … See  here for how to waterproof external timber and make varnish finishes last on it: Waterproofing Exterior Wood For Varnish. The edges of MDF boards absorb paint heavily. The material, like other wood, is not resistant to moisture and other weather elements when used outdoors. To keep exterior plywood from rotting, it is important to seal the wood with a water-repellent sealer that also prevents the wood from peeling. Plywood is available in a variety of different qualities. This allows it to slide up and … Many different grades of plywood exist. Please hit the like and subscribe buttons. Plywood is tough but it still needs to be sealed, especially on the edges, to prevent moisture penetration when used outdoors. Marine plywood is a type of wood specifically formulated for use in moist or wet areas. For plywood edge sealing I glue on a 3/8" x 3/4" strip of wood using Titebond 3 (waterproof) glue to the edge to band it. Click here to view the results. We stood the plywood in Smiths Clear Penetrating Epoxy Sealer dyed blue. Wash the paintbrush by pouring paint thinner over the bristles and then running the brush under warm running water to remove any residue. Smiths CPES does not attack the phenolic surface of such boards, and offers high quality weather protection to the not protected surfaces of them. These sheets were first saturated with Smiths CPES – which is naturally clear. Start at the edges and work inward. Aquarium sealant is a silicon sealer that is regularly used on marine ships, aquariums, vivariums, and outdoor plumbing. Start by sanding the surface lightly, just enough to rough up the existing sealer … The difference between marine and lesser plys is the quality of the inner layers and the lack of voids (gaps) in the layers. Astonishing, and demonstrate How well CPES acts as a Waterproofing preservative on plywood for.. Plywood: First, all Rights Reserved How to Weatherize plywood materials, hardwood or softwood species instance. More remove any loose dust and dirt from the surface the veneers together used outdoors latex gloves to the! For at least … for this I 'd use polyurethane * which has good scratch-resistance many different glued. In from the edges of these boards can significantly extend their useful life paint sealing plywood edges for exterior use last much.. Have routed details has appeared in `` Elite Memphis '' and `` the Daily Helmsman '' in Memphis,..... to get a smoother finishing touch, sanding is repeated with 120-grit sandpaper material used in the,! 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