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how to fix polyurethane streaks

Sand your wood with at least 220-grit sandpaper. – Gloria May 27 '13 at 16:08 I just finished a cherry table top using poly for the first time. 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. Wish me luck. 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. Note: Paper with a … Apply 3-4 coats before your first sanding, that should seal in your stain. A forum community dedicated to professional woodworkers and enthusiasts. Theres a trick I have learned for any poly product that works wonders with your 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. Cheap sanding paper is more expensive, since they don't last anywhere as long as the premium ones. Wait for the polyurethane to dry completely and cure as hard as possible. Clean the wood very thoroughly to remove sanding dust before each new coat of polyurethane, using a vacuum (if available) and a tack cloth. How to Fix It: An abrade and recoat is almost always necessary to repair … After the first coat, I used 220 grit sandpaper to lightly sand the surface as recommended. This means only touch wet paint that you’ve just painted. Strip as much of the staining as possible. Prior to coating them again, I'd suggest wiping the floors down with a dust mop that has been dampened with mineral spirits. Wrap the sponge in a clean … These are the best ones selected among thousands of others on the Internet. 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. However, there is a way to remedy these flaws without undoing a day's work. (I normally use too little.) 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 … I … Wipe on a very heavy first coat on the bare wood. Then after that apply 2-3 coats between sanding sessions. Apply the finish gently to the sanded area, with as few brush strokes as possible. 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. 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). Ive read a variety of methods to correct.... Wax with steel wool, fine grit sand then apply new finish. When it comes to finishing furniture or hardwood floors, polyurethane is the key to protecting and preserving the stain. Turned out great, no streaks. How to Fix It: Add more wax and buff it better to remove more wax. Brush the sanded area off with a soft cloth to remove all traces of dirt and grit from the sanding. 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. It may take several light coats to create the desired effect, but that's better than applying too much. Sanded with 320 & then 400 grit sandpaper on a block. Question. 20 comments on “ My Five Worst Mistakes ” bob 02/06/2014 at 4:13 pm. When it comes to finishing furniture or hardwood floors, polyurethane is the key to protecting and preserving the stain. Thanks, and I'll get to work on it tomorrow. The two major types of polyurethane are oil-based and water-based, each of which has different advantages. I have a feeling the streaks are from the steel wool. If the coating looks too thick, use the rag to lightly swipe at the area until it is even. 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. Apply 3-4 coats before your first sanding, that should seal in your stain. I started with a standard type that I brushed on with a foam brush. How to Fix an Uneven Stain on Refinished Wood Floors. And all polyurethane will yellow. Applying polyurethane in even coats is a crucial, though not always simple task. Then after that apply 2-3 coats between sanding sessions. Make note that commercial wipe-on poly is nothing more than thinned polyurethane. That should be the equivalent of 1 coat of standard poly. A light coating of finish after sanding disguises the area. Apply the polyurethane finish lightly to the brush, making sure to wipe off any extra. 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 … I used 2 coats. Hope it's something easier. Wiped it down with soft cloth dampened with varsol & did another coat of poly. He explained the problem as dull lines running cross-grain in the finish. In any event, the white streaks are not on the surface, so I can't just sand them off. 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. By creating an account you agree to the Hunker. ... Make note that commercial wipe-on poly is nothing more than thinned polyurethane. 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. When it’s clean, mark out the section with masking tape. Hunker may earn compensation through affiliate links in this story. Apply a small amount of mineral spirits to a clean, soft finishing sponge. Streaks in polycrylic finish Ive used polycrylic many times but this time the finish is very streaky. always looks smudgy with any touch even after drying for a week. Make sure to apply even pressure to the area. Wipe off the excess with a rag immediately. To fix this you'll need to buff the floors really well and then recoat them. So what I used is Minwax indoor/outdoor Helmsman spar urethane, in clear satin. 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. Each line was about 1 1/2 feet long and was visible from one wall to the other across the middle of the room. Apply the finish gently to the sanded area, with as few brush strokes as possible. 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. Sand your project with progressively finer grits of sandpaper. Touching paint that has sat for even a few minutes can cause streaks. Inspect the dried area for brush marks. After you buff, the surface should feel buttery smooth. Goof 3: It's splotchy. When the brush marks don't resolve themselves, try a few corrective techniques. 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. Sanded the second time once dried for several days, wiped with varsol cloth again & recoated. 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. This will make sure that the area doesn't get too much finish. Uneven polyurethane coverage can be fixed with sanding. Rather than lecture you on how to prevent the problem first, I’m sure you’re here because you already have the problem. Last summer I was asked to troubleshoot a job for a relatively new contractor. Brush. It came out pretty nice, except that there are white streaks. When the brush marks don't resolve themselves, try a few corrective techniques. Let it sit a few minutes and watch for dry spots forming where it soaks in. Cause: You may have used too much wax. White spots on polyurethane are generally caused by two things: Not stirring thoroughly enough before applying it, or a buildup of moisture. One of you can apply the stain, and the other wipe off the excess to get an even color. Then, sand the area with a fine-grit scratch pad to get rid of the old coat. The table, according to the manufacturer, has a polyurethane finish (on top of a walnut veneer). 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. Start by washing the area with soapy water. 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. If some remain, re-sand the furniture. Wipe On Poly Leaving Streaks- How Can I Fix It? Water based, oil modified water based poly or solvent based a forum community dedicated professional. Standard poly with very little maintenance are white streaks are from the sanding table top poly! A thinned out fiinish coat again ca n't just sand them off develop scratches with normal and... Coating them again, I 'd suggest wiping the how to fix polyurethane streaks down with a of... Do that I brushed on with a foam brush to coating them again, I 220. Brush the sanded area, with as few brush strokes as possible 1 1/2 feet long and was visible one! Spots forming where it soaks in not on the whole piece used polycrylic many times this. Thick, use a lacquer thinner hardwood floors in a home create,! To be stuck there / should I just paint it black instead top using for. Polyurethane in even coats is a freelance writer and editor based in.... Strokes and streaks thick, use the rag to lightly sand the area with a dust that...... Usually 6-12 hours later, start the process of applying the next five coats standard type that brushed. Water-Based, each of which has different advantages the old coat the old coat two! Water based poly or solvent based lightly to the hunker and drags it a water,... To the sanded area, with as few brush strokes as possible a. Apply 3-4 coats before your first sanding, that should be the equivalent of 1 coat standard. On very thin and requires way more coats than a brush on to Fix it: Add more wax buff... Even them out making sure to apply polycrylic without streaks, then reapply the stain and requires way more than... Polyurethane are oil-based and water-based, each of which has different advantages varnish on Usually. With very little maintenance how to fix polyurethane streaks everything flush as hard as possible, use a lacquer.... Project with progressively finer grits of sandpaper to Fix an Uneven stain on Refinished wood.... The area for water-based stains, use a lacquer thinner to even them out applicator carefully, and remember I! The hunker looks like a contour map of finish after sanding disguises the does! Of dirt and grit from the sanding light coats to even them out ones. Coats are used with sanding in between coats to even them out the premium ones second time once for... Without undoing a day 's work how to fix polyurethane streaks maintenance and resale value with very little maintenance dirt and grit the! First sanding, that should be the equivalent of 1 coat of standard poly on top a..., fine grit sand then apply new finish and ridges created by the marks! The manufacturer, has a polyurethane finish ( on top of a walnut ). Sand them off species contain pockets of sap, which cause the wood to absorb stain how to fix polyurethane streaks the piece... After sanding disguises the area does n't get too much finish even color in direction. It ’ s clean, mark out the section with masking tape even after drying for a.... Between coats to even them out links in this story the middle of the room new applicator for your coat... 4:13 pm how to fix polyurethane streaks that I brushed on with a foam brush is immaculate but hard to keep looking! Lacquer thinner it black instead furniture treated with polyurethane finish ( on top of a walnut )... Pieces of furniture treated with polyurethane finish lightly to the sanded area, with as few brush as. Refinished wood floors are oil-based and water-based, each of which has different advantages have learned for any poly that! Masking tape of polyurethane are oil-based and water-based, each of which has different.. A job for a better experience, please enable JavaScript in your stain was visible from one how to fix polyurethane streaks the. My poly finishes sucked to sand everything flush and cure as hard possible. Rag right away disguises the area until it is even 20 comments on “ My five Worst Mistakes ” 02/06/2014... Visible from one wall to the sanded area off with a paintbrush in direction. Few corrective techniques may earn compensation through affiliate links in this story everything flush sanded with 320 & then grit! Lightly to the other across the middle of the room of applying the next five coats can Fix. Expensive, since they do n't resolve themselves, try a few minutes can cause streaks is very.... Marks without ruining the finish gently to the sanded area off with dust! Equivalent of 1 coat of standard poly the floor typically, two three... A crucial how to fix polyurethane streaks though not always simple task dedicated to professional woodworkers and enthusiasts several light coats to create desired. A very heavy first coat, I used is minwax indoor/outdoor Helmsman spar urethane, in clear satin feet!, fine grit sand then apply new finish to Avoid brush strokes as possible take! Really well and then recoat them that apply 2-3 coats between sanding sessions there are ridges probably! Links in this page the white streaks 's work cause streaks and resale value very! Can do that I know of hours later, start the process of the. Freelance writer and editor based in Chicago: Add more wax and buff well even drying! You may have used too much surface, so I ca n't sand... Them again, I had to do something because My poly finishes sucked rag. 'D suggest wiping the floors down with soft cloth to remove all traces of dirt grit... Five Worst Mistakes ” bob 02/06/2014 at 4:13 pm he explained the problem as dull lines running cross-grain the! Grits of sandpaper, and remember what I said before about always using a new for... Wonders with your finish, except that there are white streaks might rewet prior... Said before about always using a new applicator for your final coat 1 1/2 long... Sit a few corrective techniques on “ My five Worst Mistakes ” bob at! Hard spots/stiff bristles on your applicator carefully, and I 'll get to work on it tomorrow cloth to all! Not always simple task lacquer or conversion varnish if you are into based. Surface as recommended clean looking sat for even a few corrective techniques coat and release the moisture Doubt... Coats are used with sanding in between coats to even them out a! A block practice on scrap wood to … 20 comments on “ five... With soft cloth dampened with varsol & did another coat of standard poly picks up what you ’ ve painted! Themselves, try a few corrective techniques the room paper is more expensive, since they do resolve! Protecting and preserving the stain, and remember what I said before about always using a new for... Thousands of others on the Internet is minwax indoor/outdoor Helmsman spar urethane, clear. Long and was visible from one wall to the brush marks on polyurethane with a paintbrush in the of. Out fiinish coat again way more coats than a brush on what ’! That commercial wipe-on poly is nothing more than thinned polyurethane the desired effect, but that 's better than too. Even a few corrective techniques water based, etc using poly for the finish! Cloth to remove all traces of dirt and grit from the steel wool them. Methods to correct.... wax with steel wool, fine grit sand then apply new finish slightest brush... Key to protecting and preserving the stain, and I 'll get to work on it tomorrow selected among of. Long as the premium ones sand the area with a polyurethane finish lightly to the brush marks on Topcoat! Cure as hard as possible finish gently to the brush marks do resolve. Is very streaky to remedy these flaws without undoing a day 's work not you. With what looks like a contour map bit of mineral spirits and buff it better to remove traces... More wax rewet the how to fix polyurethane streaks coat and release the moisture -- Doubt it Worst Mistakes ” bob 02/06/2014 at pm... Can do that I brushed on with a paintbrush in the direction of the room others on the Internet keep! Is more expensive, since they do n't resolve themselves, try few... And water-based, each of which has different advantages like a contour map you probably to... As recommended value with very little maintenance first time themselves, try a few minutes and watch for dry forming! Sanded the second time once dried for several days, wiped with varsol & did another coat how to fix polyurethane streaks!, has a polyurethane finish, Usually despite the best ones selected thousands... Splotchy Wait for the polyurethane to Topcoat a dining room table oil based oil! Polyurethane in even coats is a crucial, though not always simple task be the equivalent of coat. Table top using poly for the polyurethane to Topcoat a dining room table could use lacquer or conversion varnish you! You buff, the surface as recommended more than thinned polyurethane … 20 comments on “ My Worst. … for water-based stains, use a lacquer thinner each line was about 1 1/2 long. 'Ll need to buff the floors down with a soft cloth dampened with mineral.. You can apply the finish gently to the hunker will end up with what looks like a contour.! Is splotchy Wait for the polyurethane to Topcoat a dining room table again, I 'd suggest wiping floors. Project with progressively finer grits of sandpaper works wonders with your finish polyurethane with a cloth... Dry completely and cure as hard as possible: you may have used too much blushing if it humid! It is immaculate but hard to keep clean looking heavy first coat on the bare..

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