Let dry 4-6 hours. Varathane Professional Interior Varnish is my #1 pick right now. So, my final coat is not mirror smooth. How do you get that hard smooth finish? I prep sanded the wood using 80 grit and worked up to 220 grit. Overall, Polyurethane is the easiest form of finish that even first-timers won't have difficulty in applying. Find a paint brush that is super soft to apply it. Primers can often be thick and difficult to clean up. Polyurethane is the modern product most often used as varnish, or clear finish, on stained and painted wood surfaces. How do you make a matte finish with polyurethane? What do you do after you apply the final coat of polyurethane to smooth out the imperfections? The wiping poly is the easier product to get good results short of spraying the finish. Our 8-step approach shows you how to apply the varnish successfully. No matter how many coats you add of Polyurethane, the look will still not be completed. ; Start with 120-grit sandpaper on refinished pieces and 80-grit on new wood. You apply the final coat, let it dry and you're done. While it’s good practice to use fresh varnish, I recently used some that had been sitting around for 15 … How do you polish these few imperfections out of polyurethane after the final coating to still maintain a high-gloss, smooth finish? Unsanded wood is hard, bumpy, and often unpleasing to the eye. I am staining and finishing oak doors for the first time. 7. A good-quality natural-bristle brush, a reasonably dust-free, well-ventilated space and some patience are all you need. A gloss finish since it is free of flattening compounds is clearer. For hardwood floors, there are more coasts of PU than normal ones. This will ensure a super smooth finish. Remove all dust. Aim for a smooth, uniform finish. The thinner each layers and the longer you let each layer dry the better. This will create the impression that you sprayed all the coats and give the finish a … You can apply it and leave it (if you have a good dust free environment) this will leave you with the best sheen, or you may need to do a final buff out with very fine sandpaper 400 grit, then buff out with a rag, this will leave you with a very smooth “hand rubbed satin” finish. Oil-based polyurethanes are easy to apply but take too long to dry while water-based polyurethanes usually require multiple applications and have a whitish consistency upon application which disappears once dry.. Water-based polyurethane also tends to dry faster. Wood pieces that are not completely sealed with polyurethane can warp because moisture can enter the wood through the unsealed surface. In the photo below, you can see what we are looking for when buffing. So I sanded them out and brushed on a new coat. But large bubbles formed in the second coat about 10 minutes after I applied it. Step 13 Apply two sealer coats of polyurethane mixed with mineral spirits to the underside of the piece of furniture if it is made of traditional hardwood lumber. A: Professionals sometimes find water-based urethanes hard to apply. If third coat is desired, repeat step 5 before application. Applying polyurethane in even coats is a crucial, though not always simple task. However, do not worry if you have applied polyurethane coats unevenly. There are specific rules to be followed in applying any finish, whether oil or water based. If you miss the bubbles when the polyurethane is still fresh, you can even get rid of them after the finish has dried. Apply a THIN coat of Minwax® Fast-Drying Polyurethane using a high-quality natural or foam brush. Pop any bubbles you see by brushing back over the finish. Sand the coat lightly with 220-grit sandpaper when dry. Do not buff the final polyurethane finish coat. Step One – Use 120 grit or finer sandpaper to scuff sand the bubbles. Always stretch the polyurethane as thin as you can. I am in the process of redoing a bureau. You should ensure that you sand the previous coats so that you create a perfectly level and even base for your final coat. Any slight specs after the final coat will be rubbed out. Try to get the "non-filling" type, like the waterproof or aluminium oxide. It levels out so nicely. Similarly, if you want an impressive final finish, the wood surface has to be smooth and clean before applying the poly. So, the spots are too noticeable for this type of project. For a smooth coating you’ll want the surface to be as smooth as possible, so prepare the wood by sanding it with a sanding block or orbital sander. After final coat rub out with 0000 steel wool and wax with carnuba. So brushed-on coats of a standard varnish would do the trick nicely. How to Remove Brush Marks From a Polyurethane Finish . I've sanding, conditioned, stained and so far have applied 2 coats of satin polyurethane. I didn’t shake the can, and the brush didn’t leave any bubbles behind. Ultra-smooth surface is inevitable in terms of getting an excellent finish. Do not sand the paint before applying poly. Move in the direction of the wood grain. For the final coat, if I really want a smooth coat, I will use a spray can, just for the last coat. I prefer the 320 grit between coats. How to Sand Out Bubbles from your finish. Take 220 – grit paper to sand the wood. However, there is a way to remedy these flaws without undoing a day's work. If this is your first time working with Varathane, there may be some uneven spots. If a second coat is needed (and I usually advise at least 2 coats for normal furniture and 3 coats for high traffic or areas around water), you will want to sand, vacuum and tack cloth the piece between coats. This step will remove any rough patches and give the piece a smooth finish. However, you do not want to sand the final coat or you will end up with a … It is best to sand your wood before any coats are added. If you are going to brush it do it sometime when the temperature is under 90. Any slight specs after the final coat will be rubbed out. Wait for drying But, you always have to buff it once. Typically, two to three coats are used with sanding in between coats to even them out. Hand Rub With Wipe-On Varnish or Oil If you want to transform the sheen from high gloss to satin or matte, then using a hardening oil such as tung oil is a good way to do it. The first coat on the top looked good too. It came out great. I am primarily doing this on decent sized flat surfaces, 5-6 sq/ft. Do You Sand the Final Coat of Polyurethane? Heating, dropping rocks and chiseling the wood. How many coats of polyurethane should be put on hardwood floors? If you don't have a soft enough brush or it's too hot or you don't work it fast enough then you are left with a bunch of brush marks to contend with. I used a gel stain for color and then I have applied 3 coats of Varathane polyurethane with a satin finish. Getting a smooth, blemish-free finish with oil-based polyurethane is within your grasp if you follow the steps in this article. If you are going to do that you might as well use a gloss finish. Unfortunately, despite using an all natural brush, I can still see brush strokes. Apply a full-strength final coat. Several light coats will get you a smooth finish. Otherwise, it will show through on your next coat. For polyurethane, you’ll probably apply five to ten coats. There are always some little imperfections and spots. This ensures the protectant goes on smoothly and actually provides a finished look. Brush marks often show up on pieces of furniture treated with polyurethane finish, usually despite the best efforts of the craftsman. As for figured cherry, there should be no reason to pore-fill. You'll want to cover your wood furniture item with several coats of protective polyurethane. With water-based polyurethane finishes, you generally don’t have to buff after each coat to achieve adhesion if it is applied within so many hours. I personally prefer using a small foam roller and foam brush' Smooth finish, no brush marks. There’s a running debate on whether or not you should apply your clear coat over your vinyl decals. Personally, I would do it but you’ve got to consider how your clear coat might effect the decal down the line. I like to use a green Scoth Brite pad. Dip your brush gently and take your time painting the surface. Before my "final coat", even if my previous coat was perfect, I sand with 400-600 and 0000 steel wool to make it silky smooth before that last coat. The final one is the polishing coat: many users use PU to create the glossy surface for wood products. RE: How do I smooth out uneven brush strokes in polyurethane? Take your time, like the pros do, and you'll create a durable, smooth, lasting finish. Sanding removes the lines and ridges created by the … If you do not sand the primer appropriately, you might have blotchy stains on the piece when you apply the final coat of paint. Then we buff with an abrasive pad. Let the polyurethane sit for about 10 minutes after stirring to allow the foam to settle. Rubbing out the finish you would re-create the satin by scuffing the finish with 0000 steel wool. You really want that final layer of finish to be thick enough to withstand the rubbing out process. After the final coat dries for 48 hours or more, we wet sand it with water and 400 grit sandpaper. There seems to be a lot of controversy on a rough first coat of polyurethane and what to do about it. When you sand and rub out the final finish you take off most of the surface which contains the satin. Lightly sand in between poly coats. Intercoat abrasion with a multi-disc and 220 grit sandpaper Polyurethane wood floor finish tip: When you abrade your floors, make sure you buff out any dust, particles and bubbles, before cleaning and tacking. If you notice significant bumps in the dried coat, use a razor blade to shave these off. Normally, the property of the floor surface also affects to the finish paint quality. I waited 20 minutes between layers and then waited an entire day before spraying the final coat of spray paint to cover any discoloration. Then lightly sand entire surface with fine sandpaper (220 grit) to ensure an even finish and proper adhesion. The finish should feel smooth and flat, no bumps. If your kitchen table is made of oak or ash, take a wood grain filler and apply it before the poly. Thin coats will result in you burning through the top layer. The problem is easily fixed. A little test of how well polyurethane works when there are 40 coats. You can use a belt sander on larger projects, or sandpaper by hand on smaller wood items. Make sure that you have plenty of mineral spirits on hand to clean up your brushes and any type of mess that you create. Is one coat of polyurethane enough? You’ll get the best results from your topcoat if you remove any old paint, varnish or other finishes before polyurethane application. Now that the coat is dry, you can lightly sand its entire surface. After 40 plus years of finishing doors, woodwork, furniture etc I can tell you what I use and it's easy and comes out baby butt smooth. After I stripped, sanded, and stained my solid-oak kitchen table, I brushed three coats of polyurethane on the underside. At least three coats of poly. Just as you did with the initial coats, brush the polyurethane onto the surface, working systematically from one side of the project to the other. Instead, it would be best if you sprayed it or spread it in a nice and level way. This Site Might Help You. This removes the high spots, the embedded dust, the laps, etc. If you really want that mirror finish, spray the final coat. The paint and Polyurethane will mix and fill the layers, any holes, and printed flaws. After your final sanding, apply your final finish coat. No, you are not supposed to sand the final coat. Apply second coat. I’d go with about 5 coats. How Long Do You Let Polyurethane Cure Before Wet Sanding?. After the first coat, all you are trying to do is remove the bumps and scuff the surface for the next coat, so 220 is just too rough. Oil-based polyurethane varnish brings out wood's natural beauty and grain. Do this by sanding out the bubbles then apply a fresh coat of the product. So we “rub out” the final coat to make it smooth and flat. Final Finish. Three plus will get a smother finish. No sanding required. I'm not really a fan of poly, I find it dies too quickly. Or more, we wet sand it with water and 400 grit sandpaper though not always simple task do and! 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