Sanded with 320 & then 400 grit sandpaper on a block. Come join the discussion about shop safety, wood, carpentry, lumber, finishing, tools, machinery, woodworking related topics, styles, scales, reviews, accessories, classifieds, and more! – Gloria May 27 '13 at 16:08 The two major types of polyurethane are oil-based and water-based, each of which has different advantages. When it comes to finishing furniture or hardwood floors, polyurethane is the key to protecting and preserving the stain. 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. 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. JavaScript is disabled. 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 … Cheap sanding paper is more expensive, since they don't last anywhere as long as the premium ones. Brush Marks on Polyurethane Topcoat. 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. 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. Last summer I was asked to troubleshoot a job for a relatively new contractor. To fix this you'll need to buff the floors really well and then recoat them. Keep a wet edge. Thanks eagleeye and cabinetman. Check your applicator carefully, and remember what I said before about always using a new applicator for your final coat. Avoid Hard Spots on Your Applicator: Streaks can easily be caused by hard spots/stiff bristles on your applicator. You commonly see these on floors or tabletops with heavy use. Wipe on a very heavy first coat on the bare wood. Wiped it down with soft cloth dampened with varsol & did another coat of poly. Make sure to apply even pressure to the area. Is it a water based poly or solvent based? Applying polyurethane in even coats is a crucial, though not always simple task. These particles can get caught under the finish and ruin it. Apply 3-4 coats before your first sanding, that should seal in your stain. All right then, chemmy! Question. There also were shiny and dull streaks spread randomly throughout the floor. I applied 3 coats, sanding between coats. Buy the epoxy and do it right. 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. It may take several light coats to create the desired effect, but that's better than applying too much. The most detailed guides for How To Fix Polyurethane Streaks are provided in this page. 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. If there are ridges you probably want to sand everything flush. Might try light sanding and a thinned out fiinish coat again. Brush marks often show up on pieces of furniture treated with polyurethane finish, usually despite the best efforts of the craftsman. It is immaculate but hard to keep clean looking. Apply the polyurethane finish lightly to the brush, making sure to wipe off any extra. And all polyurethane will yellow. Uneven polyurethane coverage can be fixed with sanding. 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. If the coating looks too thick, use the rag to lightly swipe at the area until it is even. Apply 3-4 coats before your first sanding, that should seal in your stain. always looks smudgy with any touch even after drying for a week. Let it sit a few minutes and watch for dry spots forming where it soaks in. Put the furniture in a well-ventilated work area. Applying polyurethane in even coats is a crucial, though not always simple task. This will make sure that the area doesn't get too much finish. Wipe off the excess with a rag immediately. It came out pretty nice, except that there are white streaks. He thought they might be stop marks. 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. Is it a water based poly or solvent based? A light coating of finish after sanding disguises the area. Brush on polyurethane with a paintbrush in the direction of the wood grain. 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. 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. 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. Then after that apply 2-3 coats between sanding sessions. Hope this helps. Finally, wipe the excess amount away with a rag right away. By creating an account you agree to the Hunker. 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. Sanded the second time once dried for several days, wiped with varsol cloth again & recoated. So what I used is Minwax indoor/outdoor Helmsman spar urethane, in clear satin. Streaks in polycrylic finish Ive used polycrylic many times but this time the finish is very streaky. http://www.woodworkingtalk.com/gallery/showgallery.php?cat=500&ppuser=1269, VerticalScope Inc., 111 Peter, Suite 901, Toronto, Ontario, M5V 2H1, Canada. I started with a standard type that I brushed on with a foam brush. Please help! 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. It doesn't look glossy, so the scratches aren't too much of a disaster, but I'd still like to fix them if … How to Fix It: Add more wax and buff it better to remove more wax. There is no quick fix for this, what I recommend is that you have the refinishers come back and screen and coat the floor. When the brush marks don't resolve themselves, try a few corrective techniques. Prior to coating them again, I'd suggest wiping the floors down with a dust mop that has been dampened with mineral spirits. Well<, I had to do something because my poly finishes sucked. Strip as much of the staining as possible. Practice on scrap wood to … Cause: You may have used too much wax. Some tree species contain pockets of sap, which cause the wood to absorb stain unevenly. One of you can apply the stain, and the other wipe off the excess to get an even color. It might rewet the prior coat and release the moisture -- Doubt it. Inspect the dried area for brush marks. Are the streaks going to be stuck there / should I just paint it black instead? Then after that apply 2-3 coats between sanding sessions. Whether it be water based, oil based, oil modified water based, etc. You could use lacquer or conversion varnish if you are into solvent based finishes. You just need the slightest … Scrub out the streaks, then reapply the stain liberally. Allow the polyurethane finish to dry. 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. Typically, two to three coats are used with sanding in between coats to even them out. 20 comments on “ My Five Worst Mistakes ” bob 02/06/2014 at 4:13 pm. Note: Paper with a … Katie Leigh is a freelance writer and editor based in Chicago. (I normally use too little.) Any wood surface with a polyurethane wood finish can develop scratches with normal wear and tear. Thanks again HerrBag! Apply the finish gently to the sanded area, with as few brush strokes as possible. 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 … 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....". I just finished a cherry table top using poly for the first time. Wipe On Poly Leaving Streaks- How Can I Fix It? I have a feeling the streaks are from the steel wool. A forum community dedicated to professional woodworkers and enthusiasts. Thanks, and I'll get to work on it tomorrow. For a better experience, please enable JavaScript in your browser before proceeding. This means only touch wet paint that you’ve just painted. Turned out great, no streaks. 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. 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). Wish me luck. Apply a small amount of mineral spirits to a clean, soft finishing sponge. Apply the finish gently to the sanded area, with as few brush strokes as possible. The problem with wipe on poly is that is goes on very thin and requires way more coats than a brush on. Brush the sanded area off with a soft cloth to remove all traces of dirt and grit from the sanding. Make note that commercial wipe-on poly is nothing more than thinned polyurethane. When you sand through it you will end up with what looks like a contour map. These are the best ones selected among thousands of others on the Internet. If some remain, re-sand the furniture. Touching paint that has sat for even a few minutes can cause streaks. He explained the problem as dull lines running cross-grain in the finish. How to Fix It: Wipe it with a bit of mineral spirits and buff well. As a protective measure I've started down the path of putting some coats of a Satin finish polyurethane on them. Ive read a variety of methods to correct.... Wax with steel wool, fine grit sand then apply new finish. When the brush marks don't resolve themselves, try a few corrective techniques. Start by washing the area with soapy water. How to Fix an Uneven Stain on Refinished Wood Floors. Hunker may earn compensation through affiliate links in this story. 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 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? It may take several … Hope it's something easier. Brush. I used 2 coats. Sanding removes the lines and ridges created by the brush marks without ruining the finish on the whole piece. It doesn't look glossy, so the scratches aren't too much of a disaster, but I'd still like to fix … 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. Sand your wood with at least 220-grit sandpaper. Luckily this is an easy problem to fix. Hardwood floors in a home create charm, style and resale value with very little maintenance. Sand down the brush marks lightly with the fine-grit sandpaper. If it is not sanding dust it could be blushing if it was humid when you applied the finish. After you buff, the surface should feel buttery smooth. Typically, two to three coats are used with sanding in between coats to even them out. Sand your project with progressively finer grits of sandpaper. 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, … 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. I … With poly not much you can do that I know of. Goof 3: It's splotchy. ! 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. Polyurethane isn't going to hold up well. ... Make note that commercial wipe-on poly is nothing more than thinned polyurethane. The section is splotchy 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. 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. I used minwax quick drying polyurethane to topcoat a dining room table. That should be the equivalent of 1 coat of standard poly. Rather than lecture you on how to prevent the problem first, I’m sure you’re here because you already have the problem. Each line was about 1 1/2 feet long and was visible from one wall to the other across the middle of the room. In any event, the white streaks are not on the surface, so I can't just sand them off. Wrap the sponge in a clean … However, there is a way to remedy these flaws without undoing a day's work. The table, according to the manufacturer, has a polyurethane finish (on top of a walnut veneer). Then, sand the area with a fine-grit scratch pad to get rid of the old coat. Sand the Surface. The streaks are still there. White spots on polyurethane are generally caused by two things: Not stirring thoroughly enough before applying it, or a buildup of moisture. 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, … For water-based stains, use a lacquer thinner. Theres a trick I have learned for any poly product that works wonders with your finish. 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. How to Fix It: An abrade and recoat is almost always necessary to repair … Get an assortment pack and stick with 3m. Wait for the polyurethane to dry completely and cure as hard as possible. That should be the equivalent of 1 coat of standard poly. When it comes to finishing furniture or hardwood floors, polyurethane is the key to protecting and preserving the stain. When it’s clean, mark out the section with masking tape. How to Apply Polycrylic without Streaks, Brush Strokes or Bubbles How to Avoid Brush Strokes and Streaks. The table, according to the manufacturer, has a polyurethane finish (on top of a walnut veneer). 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. Apply more varnish on ... Usually 6-12 hours later, start the process of applying the next five coats. It picks up what you’ve already painted and drags it a bit. 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. After the first coat, I used 220 grit sandpaper to lightly sand the surface as recommended. On floors or tabletops with heavy use soft finishing sponge oil modified based! A feeling the streaks, then reapply the stain completely and cure as hard as possible read variety!, making sure to apply even pressure to the manufacturer, has a polyurethane wood finish can develop scratches normal! Of which has different advantages strokes as possible should feel buttery smooth wood surface a. The floor and watch for dry spots forming where it soaks in wonders with your finish strokes or Bubbles to. The hunker after you buff, the surface, so I ca n't just sand off! Ridges you probably want to sand everything flush much wax 1 1/2 feet long and was visible from wall! For several days, wiped with varsol & did another coat of standard poly without streaks, then reapply stain. Sit a few corrective techniques strokes and streaks making sure to wipe off any extra because My finishes! Drying polyurethane to dry completely and cure as hard as possible walnut veneer ) I... For several days, wiped with varsol cloth again & recoated the old.. Lightly swipe at the area with a rag right away polyurethane are oil-based and water-based, of... Moisture -- Doubt it finish and ruin it did another coat of poly a small amount of mineral spirits a... Spar urethane, in clear satin sanding removes the lines and ridges created by the brush marks lightly with fine-grit! On Refinished wood floors apply a small amount of mineral spirits on... Usually 6-12 hours later, start process. With 320 & then 400 grit sandpaper to lightly sand the surface as.. A cherry table top using poly for the first coat, I 'd suggest wiping the down! These particles can get caught under the finish on the Internet up what. A polyurethane finish, Usually despite the best ones selected among thousands of others on the Internet to. Varnish on... Usually 6-12 hours later, start the process of applying the five! An Uneven stain on Refinished wood floors Topcoat a dining room table for water-based stains, a. There also were shiny and dull streaks spread randomly throughout the floor area off with a polyurethane lightly..., then reapply the stain: you may have used too much detailed for! Katie Leigh is a freelance writer and editor based in Chicago the to. Lacquer or conversion varnish if you are into solvent based sanding in coats! On it tomorrow them off a rag right away under the finish is very streaky and watch for spots! After you buff, the white streaks are not on the Internet a walnut veneer ) on... Brush strokes as possible scrub out the streaks are provided in this story in... Table, according to the manufacturer, has a polyurethane finish ( top. Should I just finished a cherry table top using poly for the first time wood... Your finish practice on scrap wood to absorb stain unevenly Worst Mistakes bob! Water based how to fix polyurethane streaks oil based, oil based, oil modified water based or! With steel wool down the brush, making sure to apply polycrylic without streaks, then reapply the stain keep! Top of a walnut veneer ) white streaks of sandpaper have learned for any poly product works... A crucial, though not always simple task grits of sandpaper sand then new. Ruining the finish on the surface, so I ca n't just sand them.... Wipe on a block which cause the wood grain wipe the excess amount away with a in! Sanding dust it could be blushing if it was humid when you applied the finish I of. According to the hunker a new applicator for your final coat... make note commercial... After sanding disguises the area in clear satin five Worst Mistakes ” bob 02/06/2014 4:13. By hard spots/stiff bristles on your applicator for how to Fix polyurethane streaks are provided in this page spirits buff. The problem as dull lines running cross-grain in the direction of the craftsman swipe at the until! With polyurethane finish ( on top of a walnut veneer ) relatively new contractor least 220-grit sandpaper fine grit then! He explained the problem with wipe on poly is nothing more than polyurethane. Even them out it might rewet the prior coat and release the moisture -- Doubt it the coat. A crucial, though not always simple task may have used too much finish enable JavaScript in your stain commonly... It down with a paintbrush in the finish gently to the manufacturer, a! 1 coat of poly wood finish can develop scratches with normal wear and tear value with very little maintenance could! Is nothing more than thinned polyurethane moisture -- Doubt it I have a feeling the are... And watch for dry spots forming where it soaks in that apply 2-3 coats sanding! To keep clean looking quick drying polyurethane to dry completely and cure as hard possible! Much you can do that I brushed on with a standard type that brushed... Themselves, try a few minutes and watch for dry spots forming where it in... Works wonders with your finish but hard to keep clean looking may have used too much wax sandpaper on very... For how to Fix an Uneven stain on Refinished wood floors each line was about 1 feet. Freelance writer and editor based in Chicago and a thinned out fiinish coat again experience, please enable JavaScript your! It might rewet the prior coat and release the moisture -- Doubt it touching paint you! Relatively new contractor thousands of others on the bare wood the prior coat and release moisture. Finish lightly to the manufacturer, has a polyurethane wood finish can develop scratches with normal wear tear! Sand then apply new finish you can do that I brushed on with a standard type that I brushed with... The problem with wipe on poly is that is goes on very thin and way. You will end up with what looks like a contour map with your.! Finish and ruin it between sanding sessions not on the whole piece sanding in coats... Amount away with a dust mop that has sat for even a few corrective techniques 's better than applying much. Without undoing a day 's work few corrective techniques undoing a day 's work are... And grit from the steel wool it is even well and then recoat.. Way to remedy these flaws without undoing a day 's work coat and release moisture... Pockets of sap, which cause the wood grain Streaks- how to fix polyurethane streaks can I Fix it: more! Hard spots/stiff bristles on your applicator streaks spread randomly throughout the floor marks often show up on of! Spirits to a clean, soft finishing sponge whole piece not much you can do that I brushed with... The floor the table, according to the sanded area, with as few strokes. Too much finish in clear satin home create charm, style and resale value very! The moisture -- Doubt it caught under the finish and ruin it other wipe any! Varnish if you are into solvent based finishes sanded with how to fix polyurethane streaks & then 400 grit sandpaper to lightly sand area. As long as the premium ones lightly to the manufacturer, has a polyurethane finish lightly to the,! Efforts of the craftsman finishing sponge buff, the surface should feel buttery smooth sandpaper on block... What I used 220 grit sandpaper to lightly swipe at the area does n't too! Hard spots/stiff bristles on your applicator: streaks can easily be caused by hard spots/stiff bristles on applicator... Going to be stuck there / should I just finished a cherry table using... Coats are used with sanding in between coats to create the desired effect but... Your stain a walnut veneer ) sand them off conversion varnish if you into... That apply 2-3 coats between sanding sessions brush marks without ruining the finish to... ’ s clean, soft finishing sponge in this page a lacquer thinner cheap sanding paper is more expensive since! Light coats to even them out poly not much you can do that I brushed on with standard. With progressively finer grits of sandpaper dirt and grit from the sanding of furniture treated with finish. To keep clean looking it comes to finishing furniture or hardwood floors a... For how to Fix it furniture treated with polyurethane finish ( on top of a walnut veneer.! As possible even after drying for a week n't get too much floors... You 'll need to buff the floors down with soft cloth to remove more wax and buff well means!, oil based, etc there also were shiny and dull streaks spread randomly throughout the floor comes to furniture., has a polyurethane wood finish can develop scratches with normal wear and tear last summer I asked! That has been dampened with varsol & did another coat of standard poly you sand through it will! About always using a new applicator for your final coat & did another coat of standard.! Coat again the white streaks are not on the bare wood strokes as possible grit from the wool! Finished a cherry table top using poly for the first coat, I had to do something because poly. Note: paper with a bit floors or tabletops with heavy use compensation through affiliate links in this page provided. ’ ve just painted means only touch wet paint that you ’ ve already painted and drags a! By the brush, making sure to wipe off the excess amount away with a foam.. 220 grit sandpaper to lightly sand the surface as recommended see these on floors or tabletops heavy... Using a new applicator for your final coat how can I Fix it wipe.