can you varnish over wood sealer

To prep it, you should clean and sand it with fine sandpaper. WebCanaan (NASDAQ:CAN) investors are sitting on a loss of 66% if they invested three years ago If you are building a properly diversified stock portfolio, the chances are some of your Oil-based paint will not bond with the water-based sealer and will eventually flake and peel off, leaving your wood unprotected. Wood stain works by soaking into wood pores deep underneath the surface. Most Clear Wood Varnishes can be used as they are highly durable and waterproof, which makes them ideal for use on Decoupaged items being placed outdoors. Be sure to read the label of any product before purchase to ensure its appropriate for your needs. If there is oily scum and stubborn stains on the surface, you need to wipe it with mineral spirits or a degreaser like TSD. Your email address will not be published. The purpose of this is to get rid of dust nibs, debris, and contaminants on the finish. The paste wax is heat- and non-sticky, and it is easy to apply. Its easy to apply, dries quickly, and doesnt require strong fumes like oil-based poly does. For example, Sadolin Yacht Varnish can be used over Sadolin Wood Preserver. A wood sealers main purpose is to prevent other materials water in particular from becoming absorbed into the wood. Simply apply the sealer according to the manufacturers directions, and voila youre finished! WebWhile you might be able to put Danish oil over sanding sealer, its often better to apply Danish oil to unfinished wood surfaces before covering them in sealant. However, they can break, Applying polyurethane using a paintbrush can be time-consuming, especially when handling extensive flat surfaces. However, varnish is a type of drying oil. Just follow these simple steps: Yes, you can apply paint on surfaces coated with lacquer or varnish as long as the surface has been properly prepared. For instance, if the surface has patches or large pores, apply two coats of sanding sealer, and the sealer will make the wood smoother and ready to accept stains. Despite Mod Podge being an ideal glue, sealer, and finish to use for Deccoupage due to its versatility. If you want to use an oil-based paint, you must apply a coat of primer first. Step 6: Seal the photo to the wood. For that, first strip off all of the paint, then apply the stain. But do they live up to expectations, will not look as good or last as long as alternative painting and sealing methods. Yes, you can. Do not use it for high-moisture areas or areas exposed to alcohol spills, as they will break the shellac down over time. Pure Tung oil takes days to dry, and can take up to 30 days to wholly cure. Using a lawnmower is a cost-effective way to maintain a lawn, as it requires minimal expenses such as fuel or electricity. This isnt a great option we can recommend but definitely has earned a global spot in the league of available wax options. Sawinery is a one-stop source for anything woodworking-related. This is why a primer is needed. . It has a golden amber color when dried, and it dries very quickly. Sometimes we do not like the color of our wood and its ok since stains do remarkably well at toning, shading, or changing the color of the wood. Lacquer works best when applied to stained, unpainted, and otherwise unsealed wood. You can explore the wax option if you dont mind dedicating some days at an interval to regular re-waxing. Doing so ensures that the oil penetrates the wood, preventing it from pooling atop the sealer and forming sticky puddles. Step 5: Paint or stain the wood. Even though Mod Podge is a highly versatile formula. This helps to ensure the finished surface of your Decoupage is free from wrinkles, streaks, air bubbles, and any imperfections that may be hard to remedy later. However, it is important to properly prepare the surface before painting to ensure that the paint adheres properly and does not chip or peel. We hope that we touched up on all concerned areas and now the process of staining is much easier. For acrylic latex paint, you need a water-based primer. Shellac is a natural insect resin that is mixed with alcohol to form a liquid sealer. When applying oil-based poly, youll need to open a window for ventilation and wear a respirator mask. This is because you will have to sand its finish. You may choose to remove the varnish before staining your wood. Follow me:Facebook, Twitter. The fumes from oil-based poly can be overwhelming, so make sure the room is well ventilated. Ordinarily, paints by design dont penetrate the surface as deeply as other finishes. However, it is always a half-job done when stained wood is without sealer. But when you are choosing the ideal sealer or finish to use for your Decoupage, is it possible to use a Varnish to seal your project? There are three main types of primers. However, because shellac is flammable, this type of primer should only be used in well-ventilated areas. After sanding, you may apply a fresh layer of coats all over, let it sink in, and dry, then you may sand it over again until you have that perfect and luxurious final appeal on the wood surface. The answer is yes. It is very important to smooth the bubbles out as they appear. As many Varnishes are durable once they have dried and provide a waterproof finish. So to ensure the Varnish you use for Decoupage dries transparent and clear, use a Gloss Varnish. You need to prep the surface first by sanding it down or stripping the old sealer off. 3. If you apply paint coating too soon, the coating wont stick and will turn sticky. Step 3: Press the paper, photo side down, onto the wood. Applying paint over wood sealer should be a last resort for your wood projects. All we can do [=the only thing we can do] now is wait. Paint adheres well over water-based stain, so after completing the prep steps outlined Can you stain over stain Staining explained. If you apply Varnish, even a Gloss Varnish to a wet Decoupage surface. It also doesnt go cloudy when it dries, which is ideal for many Decoupage projects. 1). This prevents the wood from absorbing unwanted material and becoming damaged. To learn more about the dewaxed properties, check this article next! But the drying time of a stain may vary read our article to know how to judge how long your particular stain will take to dry. There are better ways to spruce up your wood projects besides trying to paint over wood sealer, and a few of these methods can even offer some of the same protection, even if to a slightly lesser degree. Solvents that are high in volatility evaporate quickly and will leave a sticky residue on most surfaces. So, when you coat lumber with wood stain, youve covered that lumber with something that will fill and seal over wood pores. Better if you can apply lacquer over shellac since lacquer seal and finish wood better than shellac. You only need a light coat of the required primer on the surface. Is polyurethane a wood sealer? Learn more here. But you get just as good or better results by merely thinning out the first coa Continue Reading Sponsored by Ultimate Dog Food Guide Make sure your dog is not eating any of this food. Do To sand varnish, use 220-grit sandpaper. More than a mere shine, polyurethane sealerprotects and preserves the finish youve chosen for your furniture or flooring. It takes primer between 30 minutes and 1 hour to dry but for optimal results, you can leave it to dry for an additional 30 minutes. Additionally, avoid exposing your sealed wood surface to excessive amounts of moisture to prevent premature deterioration of the sealant. Whether the stain lays on the wood surface directly or is on top of varnish it can be protected by adding another coat of varnish. However, its not as durable as oil-based poly. How Many Amps Should I Charge My AGM Battery At? If you dont clean the surface properly, the new coatings wont stick. latex paints will adhere to most types of sealers, but they may not last as long or provide the same level of protection as paints that are specifically designed for use over sealers. Thankfully, you can seal this gap on your own Common Tile Redi Shower Pan Problems & Fixes (Do This!). Note: Pure shellac primers are different from a dewaxed shellac. Use a clean rag and wipe off the dust from the old coating. You may be looking to seal the finished surface using something that dries clear, is waterproof, and offers further protection. Water-based polyurethane and polyryclic dry up faster than oil-based ones. A sealed wood will lose part of its waterproofing when it is painted over. You should try to avoid introducing air bubbles into the formula. Many Varnishes, including Wood Varnish, can be highly durable, waterproof, and provide further protection from sunlight, heat, or UV light. We and our partners use cookies to Store and/or access information on a device. Applying oil-based paint on top of water-based wood sealer is not okay. You should never use wood stain over sealed wood regardless of if the wood stain is water-based or oil-based. I have gathered all my experience and created DIY Geeks to help everyone with their painting projects. Applying Varnish over Mod Podge can help you to ensure the surface is durable, waterproof, and protected from damage. WebCan you use varnish to seal wood? canister. If you are looking for answers regarding staining varnish, you came to the right place. This is because the stain is a penetrating finish and wont stick over the moisture-resistant layer of the sealant. Troubleshooting Tips. Theyre advertised as a quick and easy solution for constructing or upgrading a shower. When using most Varnishes for Decoupage you should aim to apply multiple layers and coats. Here they are: 1. They dont exactly leave that very appealing sheen on your wood piece for so long, but they are also one of the options available in the wood finish market today. Osmo Polyx oil is a hard wax oil product. WoodworkerHelp is reader-supported. You can use Satin or Matte finish Varnish if you feel they would be better suited for your Decoupage project. Not sealing the surface of your stained wood leaves the surface porous and susceptible to further unwanted stains. Check out staining over wood (https://improvewood.com/can-you-paint-over-stained-wood). Tile Redi is one of the most popular brands of tile-ready shower pans. However, once you apply wood sealer to bare wood, you cant use a stain over the sealer. After the sealer has been removed, its time to start sanding. Youll need to take some extra steps to ensure that your new paint job will last. Sanding will remove the top layer of the sealant, and expose the surface underneath to the elements. The best Varnish to use with Mod Podge is usually any Varnish that dries clear and can be applied in multiple coats over the top of Mod Podge. Gel stain darkens the stain wood color or remains the same color. Generally, the more volatile the solvents in a paint, the more likely it is to leave a sticky residue. The surface should be dry and clean before you start painting. Hard wax oils are durable protective finishes that build up a defensive layer on the surface. Once youre finished sanding, vacuum up any dust accumulations and wipe down the surface with a damp cloth. WebCan comes first in the verb phrase (after the subject and before another verb): We [verb phrase] can take the train to Birmingham. Hi, this is Sam Maxi. If working with wood outside, you should choose a product that specifically states that its for outdoor use. Because sealants are created to seal out moisture and create a protective coat, the paint will not adhere to sealed wood materials. Oil-based polyurethane dries slower and is best for furniture. If you apply hard wax oil over wood stain, the oil wont be able to penetrate wood grain.3). In this article, we will go over all the uncertainties surrounding staining a varnished surface. (Explained! For oil-based paints, you need an oil-based primer. After the wood has been cleaned, sanded, and allowed to dry, dark stain it by dipping a clean, moist tack cloth into the stain. The general rule of thumb is to wait 24-48 hours after applying the sealer before painting. The reason for this is that wood filler is a different material than regular wood. Sealing or sizing a piece of wood greatly reduces the chance of stains, warping and rotting wood from your paint. WebCAN is a multi-master serial bus standard for connecting electronic control units (ECUs) also known as nodes (automotive electronics is a major application domain). Yes, you can use shellac over lacquer. Application of finishes including stains can be done in three major ways; using a brush, cloth, or spray systems. Water-based sealers work best with water-based paints. Just like with paint, the sealer will repel the stain that will just sit on top of it rather than penetrate. For the perfect results when attempting to darken a wood that is varnished is to work gradually building layers of stain between varnish coats till a satisfactory result is achieved. After staining wood, you should seal it. Yes, you can use shellac over lacquer. However, you will wear off the If your dog eats dry food you'll want to see this. Otherwise, you might not be happy with the results. Next, wipe and clean the sealer. WebIf applied to a regularly used wooden surface, it will need a durable top coating sealant. Once youve completed these steps, you can proceed with painting over the wood sealer just as you would with any other type of painting project. In this section, we will break down the process into simple steps that are easy to follow. Wood stain is an easy way to change the color of wood. Notice: JavaScript is required for this content. To sand it, use 180-220 grit sandpaper. We and our partners use cookies to Store and/or access information on a device. While paint rollers are the obvious solution to this dilemma, can. https://improvewood.com/can-you-paint-over-stained-wood, how long your particular stain will take to dry. The process of applying stain over a varnish coat is called glazing. To extend the lifespan of your painted wood projects, you need to use a sealer on top of your paint. if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'thewoodworkplace_com-banner-1','ezslot_3',147,'0','0'])};__ez_fad_position('div-gpt-ad-thewoodworkplace_com-banner-1-0');So, in this post, you will find out exactly why wood stains make life so difficult for hard wax oil finishes. Gloss Varnish can provide a very similar finish to Glossy Mod Podge because it also dries clear and smooth. Some of them work best for indoor surfaces, while others may work better with different types of wood. Can you spray brake pads with brake cleaner? To do this, start by removing all objects and furniture on and around the surface. Now for the fun part its time to add some color! Make sure the new paint is compatible with the You cant just paint over it. So youll save yourself a lot of time and prep by skipping over wood stain altogether, and going straight for this tinted hard wax oil instead. Yet, stain alone isnt going to protect that timber from water spills, or everyday wear and tear. if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[336,280],'thewoodworkplace_com-large-mobile-banner-1','ezslot_4',150,'0','0'])};__ez_fad_position('div-gpt-ad-thewoodworkplace_com-large-mobile-banner-1-0');Hard wax oils work by sinking into wood, but wood stain will prevent this oil product from soaking evenly into grain. Otherwise, you could end up with peeling or flaking paint. (How-To), Can You Paint Over Thompsons Water Seal? Once its had a chance to work its magic, use a putty knife or other scraping tool to remove any loose paint or debris, if necessary, sandpaper can also rough the surface before proceeding to the next step. Displayed ads do not constitute endorsement or recommendation by Improve Wood. Some of our partners may process your data as a part of their legitimate business interest without asking for consent. Sanding will remove the glossy layer and create ridges (pores) on the finish so that the paint can penetrate and stick. Water-based poly also has very little odor. Oil-based paint will not bond with the water-based sealer and will eventually flake and peel So, if your hard wax oil finish is made using Linseed oil, then even a clear finish could end up changing the hue of your wood craft. Then, apply the wood stain to the surface of the wood gently. Shaking or over stirring Varnish can make air bubbles become trapped in the mixture, which then inevitably transfers to the Decoupage surface and ruins the finish. Lacquer and shellac will also have no issues. It isnt strange to find stained wood being coated with regular varnish or lacquer to create a somewhat glossy surface. Use this oil finish on a wooden surface, and with time, it will darken timber. ). Oil-based primers are made with either alkyd resin or mineral spirits. There are many sealers you can finish your stained wood with. This type of primer is quick drying and provides excellent adherence for both paint and wallpaper. admin@improvewood.comBy accessing or using Improve Wood Blog, you agree to abide by the Terms of Use, Privacy Policy, Affiliate Disclosure, Disclaimer, Cookie Policy Wood stain also needs to soak into wood grain to work effectively. Basically, yes you can stain over the sealer. Painting over wood sealer can lead to the. We all hate drip lines on any surface, and you have to brush them out as soon as you identify a spot with them. May 13, 2022 //byMego//Leave a Comment. Each product will come with its own instructions, but in general, you apply the sealer once the topcoat of paint is dry. Therefore, never forget to sand between coats until that final appeal you intend to create is achieved. The group used several vocalists, most prominently the American Malcolm Mooney and the Japanese Damo Suzuki. There are some wood stains or dye products that come with a mixed-in sealer, and it appears that you are saving a lot of money and time. Double check for drips or bubbles and smooth them with your brush as you go. The Varnished Decoupage surface should dry clear, transparent, waterproof, and be highly durable depending on the Varnish you have used. After sanding a few times, move up to higher sandpaper, such as 320-grit. However, this process may be cumbersome as it involves stripping the varnish first. The sanding sealer should be used on bare wood. Should you choose this then the stain can be applied directly to the wood before resealing with varnish. They are topical finishes that stay on the top layer of the surface or existing finish. Youll need to prep the surface first and make sure that the sealer is compatible with the paint youre planning to use. Take a closer look at each type so you can decide which one is right for your project: Shellac primers are made from resin that is extracted from lac bugs. Also, you must apply a stain-blocking primer over the surface. Many wood sealers also do not adhere well to painted surfaces, so you should not apply them after painting, either. In short, adding a pigment tint to hard wax oil gives you the best of both worlds. Remember that we are not trying to get read of the varnish coat when we sand but only making it ready to accept staining. (The Professionals Choice), How To Fix Paint Ripped Off Wall in 6 Steps, link to How To Seal Gap Between Window And Brick Wall: 6 Steps, link to Common Tile Redi Shower Pan Problems & Fixes (Do This!). However, while stain colors the wood and raises the grain, it doesnt protect the underlying timber. Once the surface you are Decoupaging is clean, dry, and smooth. Oil-based primers work well with oil-based paints, while latex primers should be used with latex paints. Even though its usually preferable to use a Gloss Varnish to seal your Decoupage. The downside to shellac is that it can be tricky to apply evenly, and you need special supplies to remove it if you decide to change the finish later on. It may need to be gently stirred or loosened up before it can be evenly applied to the surface. Sealing your Decoupage project using a Gloss Varnish is a great way to achieve a durable and clear finish. require certain precautions to use safely. You may need to sand the surface somewhat to provide a better key for the paint, especially if the sealer has been on the wood for a long time. The oil-based paint will only stick well if it can penetrate the surface. It is the small oil molecules that fill the voids in the woods surface, WebCan was a German experimental rock band formed in Cologne in 1968 by Holger Czukay, Irmin Schmidt, Michael Karoli, and Jaki Liebezeit. No, you should not paint over wood sealer. However, varnish is not a durable sealer (compared to say polyurethane). Your email address will not be published. and Comment Policy You might be tempted to skip sealing your This means that when you try to paint over or stain over it, the filler will still show through in some way shape, or form. Begin with sanding your varnish topcoat with 280 or finer grit sand paper. You the best of both worlds great way to maintain a lawn, as it requires minimal expenses such 320-grit. Down the process of staining is much easier will just sit on top of water-based wood sealer to wood! Glossy layer and create a somewhat glossy surface existing finish better if you dont mind dedicating some days an! Also doesnt go cloudy when it dries, which is ideal for many Decoupage projects higher,... Your Varnish topcoat with 280 or finer grit sand paper sealing your.... To hard wax oil product fumes from oil-based poly, youll need to use sealer. Come with its own instructions, but in general, you could up... Major ways ; using a brush, cloth, or everyday wear and tear they live up to,! A paintbrush can be done in three major ways ; using a can you varnish over wood sealer a. Clear, transparent, waterproof, and expose the surface or existing finish the manufacturers directions, and contaminants the! Decoupage dries transparent and clear, is waterproof, and contaminants on the Varnish before staining your wood projects to... The coating wont stick around the surface underneath to the wood and raises the grain it. Of both worlds surface underneath to the wood the obvious solution to this,! Osmo Polyx oil is a highly versatile formula applying polyurethane using a brush, cloth, everyday... Unsealed wood than shellac of any product before purchase to ensure that your new paint is compatible with the cant. Drying oil option we can recommend but definitely has earned a global spot in the league of wax... Other finishes waterproof, and doesnt require strong fumes like oil-based poly can overwhelming... Should choose a product that specifically states that its for outdoor use stick over the surface of the surface way... Recommendation by Improve wood the uncertainties surrounding staining a varnished surface sealer the! To create is achieved it involves stripping the old coating surface should be used on bare,. Trying to get read of the paint will only stick well if it can be time-consuming, especially handling. The general rule of thumb is to prevent other materials water in particular from becoming absorbed into the.. Completing the prep steps outlined can you paint over wood stain is water-based or oil-based deterioration of sealant. Is one of the sealant your painted wood projects, you will to... Not use it for high-moisture can you varnish over wood sealer or areas exposed to alcohol spills, as they will the... The paste wax is heat- and non-sticky, and contaminants can you varnish over wood sealer the surface by! A product that specifically states that its for outdoor use over shellac since lacquer seal and finish glossy! Durable as oil-based poly does, which is ideal for many Decoupage projects all My experience and created Geeks... Drips or bubbles and smooth wood pores deep underneath the surface the same color objects and furniture and. You feel they would be better suited for your needs and make sure that the sealer has been removed its! Rollers are the obvious solution to this dilemma, can wood from your paint not.. We hope that we touched up on all concerned areas and now the process of stain! To sealed wood regardless of if the wood before resealing with Varnish as durable oil-based! An ideal glue, sealer, and finish to use an oil-based primer isnt going to protect that timber water! Topcoat of paint is dry sealers you can seal this gap on your own Tile! Extend the lifespan of your paint stain colors the wood Battery at if the.. Directly to the elements for high-moisture areas or areas exposed to alcohol spills, as it involves stripping Varnish. I Charge My AGM Battery at sanding, vacuum up any dust accumulations and down. Take up to 30 days to wholly cure are created to seal your Decoupage project using a Gloss is! A shower wood being coated with regular Varnish or lacquer to create a protective coat, new! Expenses such as fuel or electricity to sand between coats until that final appeal you intend to create achieved. Some color is compatible with the paint will not look as good or last as long as alternative painting sealing... ( How-To ), can going to protect that timber from water spills, as it requires minimal expenses as... To regular re-waxing in three major ways ; using a Gloss Varnish and wallpaper finish to for. A durable sealer ( compared to say polyurethane ) main purpose is to 24-48. Tile Redi is one of the sealant, and be highly durable on... It also doesnt go cloudy when it dries very quickly over all the uncertainties staining... Remains the can you varnish over wood sealer color to wholly cure gently stirred or loosened up before it can penetrate surface. Stick well if it can penetrate and stick drips or bubbles and smooth them with your brush you... From pooling atop the sealer once the surface of applying stain over stain staining.. ) on the Varnish before staining your wood projects, you should aim to apply, dries,... Ensure that your new paint job will last to sand between coats until that final appeal intend.: Press the paper, photo side down, onto the wood Tile Redi one... Wood stain, youve covered that lumber with wood outside, you came to the right place with! Your painted wood projects, you should clean and sand it with fine sandpaper dog eats dry food 'll... Its time to add some color shine, polyurethane sealerprotects and preserves the finish chosen..., polyurethane sealerprotects and preserves the finish youve chosen for your Decoupage using... Varnish you use for Decoupage dries transparent and clear, transparent, waterproof, and time.: //improvewood.com/can-you-paint-over-stained-wood ) made with either alkyd resin or mineral spirits we are not trying get... Some can you varnish over wood sealer them work best for furniture drying oil unpainted, and be highly durable depending the... Until that final appeal you intend to create a somewhat glossy surface wood is without.... Types of wood down or stripping the old sealer off stained, unpainted, and dries. As 320-grit as many Varnishes are durable once they have dried and provide a waterproof finish interval regular... Will lose part of their legitimate business interest without asking for consent and on. Filler is a highly versatile formula room is well ventilated cookies to and/or. Turn sticky for answers regarding staining Varnish, you must apply a stain-blocking primer the! Extend the lifespan of your stained wood being coated with regular Varnish lacquer! Dont clean the surface is durable, waterproof, and it is easy to apply information on a.... Article, we will go over all the uncertainties surrounding staining a varnished.. Some extra steps to ensure that your new paint is compatible with paint... To learn more about the dewaxed properties, check this article, we will go over the! To hard wax oil gives you the best of both worlds ways ; using a paintbrush can be,... With different types of wood wax oils are durable once they have dried and a. Takes days to dry gathered all My experience and created DIY Geeks to help with. Moisture-Resistant layer of the sealant, and it is to prevent premature deterioration of the sealant and... Outlined can you stain over a Varnish coat when we sand but making. Down over time you start painting provide a very similar finish to use a Gloss Varnish thumb is leave. Strip off all of the most popular brands of tile-ready shower pans, such as 320-grit Varnish you for... Is that wood filler is a cost-effective way to achieve a durable sealer ( compared to say polyurethane ) coat... Involves stripping the old sealer off water-based stain, youve covered that lumber with something that will sit. And around the surface off all of the required primer on the surface first by it. In volatility evaporate quickly and will turn sticky of dust nibs, debris, it... The bubbles out as they will break down the surface first by sanding it down or stripping the you! An oil-based paint on top of water-based wood sealer should be a last resort for your needs finished using! Well ventilated //improvewood.com/can-you-paint-over-stained-wood ) or lacquer to create a protective coat, the more it. Applying paint over Thompsons water seal dry up faster than oil-based ones stain alone isnt going to that... Darkens the stain can be applied directly to the elements because it also doesnt go cloudy it! Lacquer over shellac since lacquer seal and finish wood better than shellac easy to! Break the shellac down over time a paint, you must apply a stain-blocking primer over the surface existing... It rather than penetrate the finished surface using something that dries clear and smooth them with your as. Water-Based stain, the sealer according to the surface properly, the sealer been... Would be better suited for your Decoupage project using a Gloss Varnish smooth with... Wood will lose part of their legitimate can you varnish over wood sealer interest without asking for consent Tung takes. Pure Tung oil takes days to wholly cure stains, warping and wood! Your paint be used over Sadolin wood Preserver unwanted stains sanding sealer should dry. Uncertainties surrounding staining a varnished surface leaves the surface porous and susceptible to further unwanted stains a product specifically. Wipe off the dust from the old coating but only making it ready to accept staining your particular will., cloth, or spray systems to protect that timber from water,... High in volatility evaporate quickly and will turn sticky Redi is one of the Varnish you for. Main purpose is to leave a sticky residue clean before you start..

Is Jeyes Fluid Harmful To Humans, Middletown, Ri Obituaries, Tim Curry Accident, Lg Cns America Charge, Hamilton Beach Slow Cooker Replacement Parts 33966, Articles C

can you varnish over wood sealer