What does VOC mean? VOC refers to ‘Volatile Organic Compounds’. And those gases can prove dangerous to some pets. Some liquid latex sealers, (even after they’ve cured and dried), can still give off harmful VOC levels. When Should You Consider Using A Silicone Sealer? But whether you choose to seal end grain with epoxy or PVA comes down to personal preference. Ideally, you would only use PVA more as an end grain sealer, rather than use it to seal the face grain of the plywood sheet. However, if you are going to use PVA, you probably need to water it down to thin it out a bit first before using it to seal plywood.
When used as wood glue, PVA is very water resistant and can hold joints in place incredibly well.Īnd as a sealer, it works incredibly well too as it is fast drying – taking anywhere around one to three hours to cure. This is the same glue you would find in both school glue (for sticking paper together) to carpenter glue (like ‘Elmer’s Glue). PVA (Polyvinyl Acetate) is a water-based emulsion adhesive that is regularly used to glue everything from boxes to books. The best epoxy filler coat for plywood has got to be Abatron WoodEpox Epoxy.Ĭheck out the latest prices for this epoxy wood replacement compound over here on Amazon. In which case, you should apply a clear epoxy coat first, and pack out those gaps. Instead, you have to fill in those plywood edge gaps before you coat on the sealer. Those big gaps in the side of the wood are what we refer to as ‘Plywood Voids’: Not sure what plywood voids are? Have a look at the picture below. This is because all those ‘voids’ along the sheets side can prove to be a problem. Now, just using latex sealer is typically not enough to seal up plywood end grain. Why? Well, to be frank, there are much, much better wood sealers available on the market. So, to cut to the chase, don’t use Flex Seal on Plywood.
And that is a real cause for concern if a piece of plywood is going to be exposed to outdoor weather (such as humidity and rain). While it may be water resistant, it is not water tight. Now, having said all of that, Flex Seal is not the best sealer on the market.
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Plus those latex spray droplets can easily get right into those wood pores.Īnd since you can use it to seal most any type of surface material – including piping, plastic, and even porcelain – plywood is not a problem for Flex Seal. Which can save you a lot of time if you compare it to applying the sealer using a brush.Īlso, it is very useful as it makes quick work at giving the entire plywood sheet an even coat. This aerosol sealant lets you easily spray liquid latex onto wood. Well, first off, I’ll have to admit that Flex Seal is a pretty convenient way to seal almost anything. It won’t damage the ply and is more than good enough at giving it a water-repellent coat.Ĭheck out the latest prices for Thompson’s WaterSeal over on Amazon. Simply put, yes, you can use this brand of sealer on plywood.
One of the best weatherproofing sealers available is Thompson’s WaterSeal. So lets have a look at some of the most popular sealers on the market Ĭan You Use Thompson Water Seal On Plywood? Liquid latex sealers are always a popular sealant choice. The answer to this is very simple… you coat it with a waterproof substance that ‘seals’ the plywood in. So, How Do You Protect Plywood From Water? This can cause moisture to saturate the ply veneers and make the wood warp.
In fact, if you apply paint onto plywood without sealing first, then water will easily seep through the paint. While you can paint directly onto plywood, paint isn’t enough to wrap the sheet in a completely water-tight seal. You should always take the time to seal plywood before you add a coat of paint. And it would completely keel over by the end of year two! Should You Always Seal Plywood Before Painting? If you had a piece of untreated and unsealed plywood, and you used it on an outdoor structure, it would last about 2 years.īetween the wind, rain and sunlight exposure, the ply would start to rot away within one year. How Long Will Untreated Plywood Last Outside? This is because the treatment only manages to penetrate the outermost layers and edges of the plywood.Īs a result, even pressure treated plywood needs to be carefully sealed and fully water-proofed all over, (if you want to prevent it from rotting). While we do still put plywood through the pressure treatment process, it is more of a ‘surface-level’ treatment. 3 Reasons Why Woodworking Is So Good For You Is Pressure Treated Plywood Waterproof?
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