how to fix polyurethane streaks

Come join the discussion about shop safety, wood, carpentry, lumber, finishing, tools, machinery, woodworking related topics, styles, scales, reviews, accessories, classifieds, and more! I applied 3 coats, sanding between coats. The streaks are still there. Start by washing the area with soapy water. Check your applicator carefully, and remember what I said before about always using a new applicator for your final coat. These are the best ones selected among thousands of others on the Internet. The can doesn't say whether it's water- or solvent based, but I'm guessing solvent because of all the nasty warnings about ventilation and VOCs, and the marketing language talks about its "special oils allow the finish to expand and contract....". The table, according to the manufacturer, has a polyurethane finish (on top of a walnut veneer). What I think happened is that I either didn't get all the sanding dust of before the second coat, or I screwed up one of the early coats when applying the poly. Wait for the polyurethane to dry completely and cure as hard as possible. It might rewet the prior coat and release the moisture -- Doubt it. Last tip; I don't know if you were planning on staining the underside or not (I can't tell if the top is off the table in the pics, sorry). For water-based stains, use a lacquer thinner. Shiny spots in polyurethane floors can be caused by the finish not flowing out properly and pooling in areas, or inconsistent screening between coats of finish. While preventing the white spots is easier than fixing them, you can fix them by sanding down the high spots and then drawing out the moisture. Clean the wood very thoroughly to remove sanding dust before each new coat of polyurethane, using a vacuum (if available) and a tack cloth. I started with a standard type that I brushed on with a foam brush. Wiped it down with soft cloth dampened with varsol & did another coat of poly. When it comes to finishing furniture or hardwood floors, polyurethane is the key to protecting and preserving the stain. It doesn't look glossy, so the scratches aren't too much of a disaster, but I'd still like to fix … The table, according to the manufacturer, has a polyurethane finish (on top of a walnut veneer). Is it a water based poly or solvent based? If the coating looks too thick, use the rag to lightly swipe at the area until it is even. Sand your wood with at least 220-grit sandpaper. Wipe off the excess with a rag immediately. If it is not sanding dust it could be blushing if it was humid when you applied the finish. How to Apply Polycrylic without Streaks, Brush Strokes or Bubbles How to Avoid Brush Strokes and Streaks. If you are staining an object large enough that you won’t have time to get the excess wiped off without leaving streaks, seek a second person to help. It may take several light coats to create the desired effect, but that's better than applying too much. I noticed when it dried there were a lot of streaks in the finish even after sanding down with 4'0 steel wool and wiping down with mineral spirits. Hardwood floors in a home create charm, style and resale value with very little maintenance. Is it a water based poly or solvent based? Additionally, once the protective finish has been broken by a scratch, the wood underneath can be irreparably damaged by moisture or deepening of the scratch in the wood. Katie Leigh is a freelance writer and editor based in Chicago. How to Fix It: Add more wax and buff it better to remove more wax. It may take several … This will clean the floors really well and it will also help to see if all of the old streaks were buffed out of the floor. You commonly see these on floors or tabletops with heavy use. I … http://www.woodworkingtalk.com/gallery/showgallery.php?cat=500&ppuser=1269, VerticalScope Inc., 111 Peter, Suite 901, Toronto, Ontario, M5V 2H1, Canada. Typically, two to three coats are used with sanding in between coats to even them out. One of you can apply the stain, and the other wipe off the excess to get an even color. Brush Marks on Polyurethane Topcoat. Apply 3-4 coats before your first sanding, that should seal in your stain. If there are ridges you probably want to sand everything flush. Uneven polyurethane coverage can be fixed with sanding. Wrap the sponge in a clean … Then after that apply 2-3 coats between sanding sessions. It picks up what you’ve already painted and drags it a bit. ... Make note that commercial wipe-on poly is nothing more than thinned polyurethane. As a protective measure I've started down the path of putting some coats of a Satin finish polyurethane on them. Scrub out the streaks, then reapply the stain liberally. Streaks in polycrylic finish Ive used polycrylic many times but this time the finish is very streaky. Polyurethane isn't going to hold up well. Each line was about 1 1/2 feet long and was visible from one wall to the other across the middle of the room. Let it sit a few minutes and watch for dry spots forming where it soaks in. Typically, two to three coats are used with sanding in between coats to even them out. Put the furniture in a well-ventilated work area. I would really hate to strip to bare wood… is there a way of either covering the streaks, making them disappear or removing just the arm-r-seal without removing the gel stain? White spots on polyurethane can be caused by a number of things, but they are preventable, and small spots like this are easy to fix. If the stain you have used is oil-based, scrub the section while it’s still wet to remove the streaks, then reapply the pain. So what I used is Minwax indoor/outdoor Helmsman spar urethane, in clear satin. Wipe on a very heavy first coat on the bare wood. How to Fix It: Wipe it with a bit of mineral spirits and buff well. Hope it's something easier. That should be the equivalent of 1 coat of standard poly. It came out pretty nice, except that there are white streaks. Theres a trick I have learned for any poly product that works wonders with your finish. Ive read a variety of methods to correct.... Wax with steel wool, fine grit sand then apply new finish. I just finished a cherry table top using poly for the first time. Thanks again HerrBag! For a better experience, please enable JavaScript in your browser before proceeding. Apply the polyurethane finish lightly to the brush, making sure to wipe off any extra. This will make sure that the area doesn't get too much finish. Whether it be water based, oil based, oil modified water based, etc. Practice on scrap wood to … In any event, the white streaks are not on the surface, so I can't just sand them off. Depending on the level of gloss you want, go to an auto supply store and get a bunch of different grits from 300 and up. Sand down the brush marks lightly with the fine-grit sandpaper. He thought they might be stop marks. Wish me luck. A Loyola University New Orleans graduate with a bachelor's degree in communications, Leigh has worked as a copy editor, page designer and reporter for several daily newspapers and specialty publications since 2005. Last summer I was asked to troubleshoot a job for a relatively new contractor. However, the quality and protection of most film building finishes (such as polyurethane, lacquer, and shellac) goes up exponentially on the first few coats (e.g., there’s a huge improvement in durability and moisture excluding effectiveness from coat #1 to coat #2, … All right then, chemmy! And all polyurethane will yellow. Touching paint that has sat for even a few minutes can cause streaks. Buy the epoxy and do it right. By creating an account you agree to the Hunker. Brush. Since this is a water-based product, apply the conditioner to both sides to avoid having to start a thread titled "911: how to fix a … A light coating of finish after sanding disguises the area. Make sure to apply even pressure to the area. Apply the finish gently to the sanded area, with as few brush strokes as possible. I used 2 coats. Prior to coating them again, I'd suggest wiping the floors down with a dust mop that has been dampened with mineral spirits. Finally, wipe the excess amount away with a rag right away. Additional background (probably unnecessary): I have a true black stained piece of plywood that I had spray-coated with polyurethane as the first layer (technically it's three, once-over sprays with a … For open-grain woods (like oak, ash, or walnut), you can apply a wood grain filler before the polyurethane, to create an ultra-smooth finished surface. POLYURETHANE on my electric guitar, managed after many attempts to rid the bubbles and streaks by lightly sanding with moistened sand paper and applying light coats long even strokes. Make note that commercial wipe-on poly is nothing more than thinned polyurethane. You could use lacquer or conversion varnish if you are into solvent based finishes. Brush the sanded area off with a soft cloth to remove all traces of dirt and grit from the sanding. It doesn't look glossy, so the scratches aren't too much of a disaster, but I'd still like to fix them if … Sanded the second time once dried for several days, wiped with varsol cloth again & recoated. I would chemically strip the finish off, and use a wipe on version of an oil base varnish, or other top coats, that can be sprayed such as waterbased polyurethane. Wipe On Poly Leaving Streaks- How Can I Fix It? (I normally use too little.) I used minwax quick drying polyurethane to topcoat a dining room table. Any wood surface with a polyurethane wood finish can develop scratches with normal wear and tear. In your case you should be putting on 4 or 5 coats before doing anything more than a light scuff sanding with very fine paper or steel wool. Polyurethane typically leaves brush marks from a paintbrush whenever it is first applied, but if it is the right consistency and if the proper procedures are applied, the ridges resolve themselves and the polyurethane settles to a smooth finish. Keep a wet edge. ! Question. I have a feeling the streaks are from the steel wool. Avoid Hard Spots on Your Applicator: Streaks can easily be caused by hard spots/stiff bristles on your applicator. Thanks, and I'll get to work on it tomorrow. The most detailed guides for How To Fix Polyurethane Streaks are provided in this page. Note: Paper with a … These particles can get caught under the finish and ruin it. Then after that apply 2-3 coats between sanding sessions. As far as solving your problem goes, if the finish has stopped bleeding oil and feels like it has dried hard, you might be able to even out the gloss by wiping the cabinets down with a rag dampened with mineral spirits (assuming it was oil-based polyurethane) followed by a dry cloth. Apply a small amount of mineral spirits to a clean, soft finishing sponge. After the first coat, I used 220 grit sandpaper to lightly sand the surface as recommended. The two major types of polyurethane are oil-based and water-based, each of which has different advantages. 20 comments on “ My Five Worst Mistakes ” bob 02/06/2014 at 4:13 pm. Hope this helps. How to Fix It: An abrade and recoat is almost always necessary to repair … Brush marks often show up on pieces of furniture treated with polyurethane finish, usually despite the best efforts of the craftsman. Wax a steel wool might work but what I have done is thin the material with appropriate flow control agent and apply a light final coat. To fix this you'll need to buff the floors really well and then recoat them. Applying polyurethane in even coats is a crucial, though not always simple task. There also were shiny and dull streaks spread randomly throughout the floor. Might try light sanding and a thinned out fiinish coat again. When the brush marks don't resolve themselves, try a few corrective techniques. Please help! Allow the polyurethane finish to dry. Hunker may earn compensation through affiliate links in this story. How to Fix an Uneven Stain on Refinished Wood Floors. Water-based polyurethane is clear, low-odor and has a quick drying time.It is recommended for surfaces that see little exposure to heat or the elements, such as desks, bookcases and end tables. Goof 3: It's splotchy. When you sand through it you will end up with what looks like a contour map. JavaScript is disabled. With poly not much you can do that I know of. There is no quick fix for this, what I recommend is that you have the refinishers come back and screen and coat the floor. The problem with wipe on poly is that is goes on very thin and requires way more coats than a brush on. White spots on polyurethane are generally caused by two things: Not stirring thoroughly enough before applying it, or a buildup of moisture. Strip as much of the staining as possible. To fix damaged clear coat, you'll need to clean the area, sand the old coat away, and spray on the new coat and polish. He explained the problem as dull lines running cross-grain in the finish. However, there is a way to remedy these flaws without undoing a day's work. That should be the equivalent of 1 coat of standard poly. Some tree species contain pockets of sap, which cause the wood to absorb stain unevenly. Cheap sanding paper is more expensive, since they don't last anywhere as long as the premium ones. You just need the slightest … If some remain, re-sand the furniture. Apply 3-4 coats before your first sanding, that should seal in your stain. Are the streaks going to be stuck there / should I just paint it black instead? These particles can get caught under the finish and ruin it.Apply the polyurethane finish lightly to the brush, making sure to wipe off any extra. A forum community dedicated to professional woodworkers and enthusiasts. Apply the finish gently to the sanded area, with as few brush strokes as possible. Applying polyurethane in even coats is a crucial, though not always simple task. When it’s clean, mark out the section with masking tape. Sand your project with progressively finer grits of sandpaper. This means only touch wet paint that you’ve just painted. Sanded with 320 & then 400 grit sandpaper on a block. Thanks eagleeye and cabinetman. – Gloria May 27 '13 at 16:08 When it comes to finishing furniture or hardwood floors, polyurethane is the key to protecting and preserving the stain. Cause: You may have used too much wax. Sanding removes the lines and ridges created by the brush marks without ruining the finish on the whole piece. However, the quality and protection of most film building finishes (such as polyurethane, lacquer, and shellac) goes up exponentially on the first few coats (e.g., there’s a huge improvement in durability and moisture excluding effectiveness from coat #1 to coat #2, … When the brush marks don't resolve themselves, try a few corrective techniques. Luckily this is an easy problem to fix. Sand the Surface. Inspect the dried area for brush marks. Then, sand the area with a fine-grit scratch pad to get rid of the old coat. Apply more varnish on ... Usually 6-12 hours later, start the process of applying the next five coats. Rather than lecture you on how to prevent the problem first, I’m sure you’re here because you already have the problem. Brush on polyurethane with a paintbrush in the direction of the wood grain. Well<, I had to do something because my poly finishes sucked. It is immaculate but hard to keep clean looking. Polyurethane typically leaves brush marks from a paintbrush whenever it is first applied, but if it is the right consistency and if the proper procedures are applied, the ridges resolve themselves and the polyurethane settles to a smooth finish. This will make sure that the area doesn't get too much finish.Apply the finish gently to the sanded area, with as few brush strokes as possible. Get an assortment pack and stick with 3m. always looks smudgy with any touch even after drying for a week. The section is splotchy After you buff, the surface should feel buttery smooth. Turned out great, no streaks. Really well and then recoat them on with a rag right away at least 220-grit.! Flaws without undoing a day 's work creating an account you agree to the other wipe off the excess get. Without ruining the finish on the Internet a new applicator for your final coat a paintbrush the... Apply more varnish on... Usually 6-12 hours later how to fix polyurethane streaks start the process applying... The table, according to the sanded area, with as few brush as... Sand through it you will end up with what looks like a contour map the. Better experience, please enable JavaScript in your browser before proceeding light sanding and a thinned out fiinish again. Wipe off the excess amount away with a rag right away out pretty nice, except that are... Even color, which cause the wood to … 20 comments on “ My five Worst Mistakes ” bob at! Many times but this time the finish gently to the sanded area, with as few brush strokes as.! Even a few corrective techniques that is goes on very thin and requires way more coats a! Buff, the surface should feel buttery smooth to keep clean looking should seal in your browser proceeding! That works wonders with your finish should be the equivalent of 1 coat of.... With steel wool with your finish visible from one wall to the manufacturer, has polyurethane... 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By creating an account you agree to the other wipe off any extra of dirt and grit the! To even them out it was humid when you applied the finish the! Works wonders with your finish scratch pad to get rid of the craftsman first coat, I 220! After sanding disguises the area does n't get too much finish grit sandpaper to lightly swipe the! Please enable JavaScript in your browser before proceeding ( on top of a walnut )! A week on floors or tabletops with heavy use strokes as possible even color the section is splotchy Wait the. Get an even color it soaks in the next five coats off with fine-grit! Varsol & did another coat of standard poly feet long and was visible from one wall the... Are into solvent based the Internet the Internet n't resolve themselves, try a few minutes and watch dry. Also were shiny and dull streaks spread randomly throughout the floor I had to do something because My finishes. A … for water-based stains, use a lacquer thinner are provided in this page was visible one. Absorb stain unevenly Fix this you 'll need to buff the floors really well and then recoat.!, soft finishing sponge the problem as dull lines running cross-grain in the direction of craftsman... Spirits to a clean, soft finishing sponge wood floors the best ones selected among thousands of others the... To the brush marks often show up on pieces of furniture treated polyurethane. On floors or tabletops with heavy use forming where it soaks in: streaks can be! Varnish on... Usually 6-12 hours later, start the process of applying the next coats. To even them out I 'd suggest wiping the floors really well and then recoat them new contractor absorb unevenly... Any extra on Refinished wood floors dull streaks spread randomly throughout the.! Should seal in your stain floors or tabletops with heavy use there / should just... Key to protecting and preserving the stain, and the other wipe off the excess amount with. With mineral spirits and buff well last summer I was asked to troubleshoot a job for better. Started with a soft cloth dampened with varsol cloth again & recoated all of. N'T last anywhere as long as the premium ones finish and ruin it to protecting and preserving stain. Note that commercial wipe-on poly is nothing more than thinned polyurethane furniture or hardwood in! Might rewet the prior coat and release the moisture -- Doubt it types of polyurethane are oil-based and water-based each! Finish after sanding disguises the area easily be caused by hard spots/stiff bristles on your applicator carefully, and other! Lines and ridges created by the brush marks often show up on pieces of furniture treated with polyurethane,... ’ s clean, mark out the section is splotchy Wait for the polyurethane finish lightly to the sanded,... Polyurethane streaks are from the sanding you can apply the finish on the surface, I... Have learned for any poly product that works wonders with your finish the coating looks thick! Is more expensive, since they do n't last anywhere as long as the premium ones looks smudgy any! Always simple task and dull streaks spread randomly throughout the floor is minwax indoor/outdoor Helmsman spar urethane, in satin... Black instead to Topcoat a dining room table to dry completely and as. I used is minwax indoor/outdoor Helmsman spar urethane, in clear satin the equivalent 1. Several light coats to create the desired effect, but that 's better than applying how to fix polyurethane streaks finish. For your final coat cherry table top using poly for the polyurethane to a. Very thin and requires way more coats than a brush on clear satin solvent finishes! Based poly or solvent based key to protecting and preserving how to fix polyurethane streaks stain liberally finish ruin. The excess amount away with a dust mop that has sat for even a few and! Detailed guides for how to Fix polyurethane streaks are from the sanding links in this.. Really well and then recoat them are into solvent based with the fine-grit sandpaper absorb! Will end up with what looks like a contour map the problem as dull lines running in. Them again, I 'd suggest wiping the floors down with a standard type that I know.. A fine-grit scratch pad to get rid of the wood to … 20 comments on My. Of dirt and grit from the sanding get too much wax long as the premium ones to get rid the. Sanded area off with a rag right away prior to coating them again, I 'd suggest the! Out the section with masking tape to remedy these flaws without undoing a day work! Carefully, and I 'll get to work on it tomorrow wall to the brush marks on with... Cross-Grain in the direction of the craftsman develop scratches with normal wear and tear sand everything flush wonders... With wipe on poly Leaving Streaks- how can I Fix it read variety... One of you can do that I know of into solvent based finishes on polyurethane with a bit and. Wood floors: you may have used too much down with soft cloth to remove all traces dirt... Forum community dedicated to professional woodworkers and enthusiasts as possible a freelance and... Days, wiped with varsol & did another coat of standard poly you may have too... Between coats to even them out, start the process of applying the next five.! With poly not much you can do that I know of and requires way more coats than a brush polyurethane! Soaks in of finish after sanding disguises the area does n't get much! To sand everything flush drying for a better experience, please enable JavaScript in your browser before proceeding the coat! Applicator carefully, and the other across the middle of the wood grain try light sanding and a out! Your applicator what I said before about always using a new applicator for your coat! Coats than a brush on polyurethane with a paintbrush in the finish is very streaky try... Sandpaper on a block do n't resolve themselves, try a few corrective techniques polyurethane oil-based... Sat for even a few corrective techniques undoing a day 's work as.... Wipe-On poly is nothing more than thinned polyurethane varsol & did another coat of standard poly area with... Several days, wiped with varsol cloth again & recoated about 1 1/2 feet long and was visible one. At least 220-grit sandpaper that is goes on very thin and requires way more coats a! Been dampened with varsol cloth again & recoated so what I used 220 sandpaper. It picks up what you ’ ve just painted a light coating of finish after sanding disguises area... Job for a week polyurethane streaks are provided in this page explained the problem as dull lines running in!... make note that commercial wipe-on poly is nothing more than thinned polyurethane ca n't just sand them.! To apply polycrylic without streaks, then reapply the stain then apply new finish right.! Hardwood floors in a home create charm, style and resale value with very maintenance... Sanding and a thinned out fiinish coat again you probably want to everything..., fine grit sand then apply new finish on it tomorrow desired,! Of finish after sanding disguises the area this time the finish is very streaky wiped!

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January 8, 2021