My big fear is the contracting and expansion. Then primed with bins stain block.I think I hit the knots the second time with bins.Then two coats of paint.A year later no bleed through and it looks real nice.BTW, Do not use a high end brush with Bins, Just toss, it is almost impossible to clean. THE EXPENSE. Wipe away all dirt, grease and grime from the surface of the wood, scrubbing away at any tough stains. Thank you! It would not be " a little over the top", it would be WAY over the top! I personally do not feel that deglossers are as effective as sanding. After you open the can, use a stir stick to mix the polyurethane’s components evenly, which may have settled and separated over time. Quite unattractive. Oil based paint. Yes, you can use latex paint over poly but you have a few steps to do before you can apply it. Do pay attention to where oil films from human hands may prevent adhesion. You can paint over varnished wood after preparing the surface. The entire existing stain does not need to be sanded away, but the glossiness of the surface must be removed. Of course, one of the newer water based alkyd or hybrid finishes could also be used over the shellac. Many paper towels required to clean up the mess. Coating over an old finish has the great advantages of avoiding the always-messy stripping process and greatly reducing the amount of work involved. Use lower grit sand paper for rougher finishes and thicker varnishes. Can you apply polyurethane over enamel paint? I imagine it's either an oil or water based polyurethane. Answered. © Copyright 2020 Hearst Communications, Inc. Dampen the cotton rag with the the trisodium phosphate solution. Need to know what I have to do to paint over the polyurethane on some of the walls. I want to whitewash the walls and was wondering if I’ll still have similar issues. I've attached some pictures so you guys have an idea of what we're dealing with. Scrub the walls down - a nice mix of dish soap and vinegar will cut any grease. 1.) I tried a MinWax oil-based polyurethane spray (fast-drying poly clear semi-gloss): (1) The ambering effect dulled the bright key lime paint to sort of an avocado color. The rest of the pine has some sort of finish that was yellowed through put the years. If it should start to get hard, I would simply dunk it in fresh shellac and wrap it up again. I was just going to use the regular brush and roller method to apply the primer/s, It is better/fater to use a spray. Always apply finish with the grain direction. If you sand, you do not need to degloss. This is not true of oil or latex paints. The solvents in lacquer can react with an oil based finish that has not completely cured. Thank you! There is a little chance that if the boards shrink after the painting, a little raw wood can show. Oil paints take a lot of time to dry. Even then, it's a risk. In hindsight, the label warns of this. NOTHING beats shellac for adhesion and sealing. Shellac is also one of the most environmentally friendly products, being grain alcohol and the product of an asian bug! alcohol and lacquer thinner on it and those solvents did not do anything to the finish). Any suggestions on the best way to prep and white wash? Sand until the primed surface is smooth to remove uneven textures due to blotches in the primer application and from the brushstrokes. Does anyone have any advice on REpainting and getting between the grooves ? Why do people use polyurethane over paint? This post contains affiliate links for your convenience. There is a long term love affair with stained wood that runs deep because stain … I have cypress tongue and groove walls in my den that were sealed with polyurethane 30 years ago which of course is an amber color now And everywhere that had something hanging of course didn’t yellow. Apply in careful, even strokes to avoid any thick splotches of primer in isolated areas. Is there a deglosser that is low or no VOC that I can use instead of sanding ? While it may be possible to get the polyurethane to adhere to the original coating, there will never be a great mechanical bond. The whole house interior is walled with knotty pine boards. It sticks to ANYTHING - including vinyl and will adhere to varnished or polyed or whatever surfaces. How to Paint Over Varnish, Polyurethane, Seals and More Without Sanding. Can polyurethane floors be recoated? You can paint over and stick all sorts of other applications to polyurethane with the proper preparation. The problem is the protective coating over the paint. Let the first coat dry to touch before apply subsequent coats of paint. It helps in my decision to paint or not. Oil-based polyurethane levels out to a smoother finish, although it takes several hours longer to dry. Hopefully the gun was put away clean the last time it was used. Your help would be very much appreciated. NO. Thanks David Jensen. Please read the labels of your selected products and use caution. Applying one or two coats of polyurethane to a painted surface is a recommended way to protect the paint. View Profile Apply them outdoors or in well-ventilated areas. My finish of choice was oil based Benjamin Moore Satin Impervo. Do I need to BIN or just sand and paint with Lucite Interior Satin Laytex. If you have been dying to redo some old furniture, here is everything you need to know about painting over polyurethane. Personally, I don't find the gaps objectionable if they are fully painted. Also do you recommend a certain type of paint to use over top of the BINS shellac? HELP!!! A polyurethane finish or varnish is a durable coating that protects a wooden surface, which means you can’t paint directly over it or your paint won’t adhere to it. Darren White is a third-year student studying photography and art history at Haverford College. started with the Bin primer, put two coats, then started to see an Amber-colored film coming through. Chalk paint is a water-based formula that will stick to almost anything. Mostly for telling me to RELAX ! Also what is the best product to use to whitewash? Those knots may bleed thru in time no matter what you do. BIN is actually thinner than most paints and rolls out well, however, unlike most paints, being alcohol based, it sets VERY fast. He also writes, edits and photographs for Haverford's fashion magazine, "Feathers & Fur.". Since a friend is doing this as a favour I really dont want to mess up his sprayer. While it may be possible to get the polyurethane to adhere to the original coating, there will never be a great mechanical bond. In hindsight, the label warns of this. 3 - Paint over the knotholes (just in case the poly is not stain-proof) with alcohol-based shellac primer. Hello, we have a small sunroom ( western side of the house) has knotty pine wood on the walls, ceiling and up into the cut out Skylight areas. On very dark paneling, I would go around twice with the BIN, completely blanking out the dark wood. Does anyone have experience using this product on knotty pine? After allowing the foam to harden and cure sufficiently, you can paint it any color you want to ensure that it blends with surrounding surfaces. Thanks so much for the feedback. Wash the walls with any decent wall-washing de-glosser that you can get locally. I just tested this tonight before and after sanding with a 60 grit orbital sander. Do one or two vertical boards at a time, trying to keep a "wet edge" on the BIN. Let the first coat dry to touch. 4. Coats and Dry Times To get a solid finish, apply three coats of paint over the oil-based primer. This liquid foam sprays out of a can through a straw, directed exactly where you want to fill gaps. Unfortunately, when many do-it-yourselfers apply polyurethane over a water-based latex or acrylic paint, they end up with rampant flaking. First, rough up the surface of the paneling with a pole sander that has been fitted with a sanding screen (rather than paper). , or heavy household dirt, extensive cleaning with TSP or other cleaners is not necessary. The table had 2 coats of wax and had been buffed. The problem is the protective coating over the paint. You just want the surface to be dull and clean so that when you paint, there is nothing there that will impede adhesion. Always use gloves, eye protection and a dust mask when working with TSP, especially in its powdered form. Apply a single coat of the enamel paint in the same manner of application as the primer, using long and even strokes across the surface of the wood. If using TSP as a cleaner, make sure to rinse everything well with clean water. Oil paints take a lot of time to dry. I can't imagine doing it with hand sanding. It does not need a clear coat over it. Can I whitewash solid oak paneling without sanding first? The laundry room is an awkward space in general, and will likely require a lot of hand painting no matter what. Not sure if it is the way the varnish aged or if it was intentional. How much sanding do I do ? I applied a coat of Minwax fast drying polyurethane on a bookshelf for my daughter's bedroom. My painter, primed, caulked the vertical lines and painted...all Benjamin Moore products. When painting over finished paneling, prep is a very important first step. I am updating my paint and my pine panels definitely expand and contract thoughout the year . Apply a wipe-on polyurethane varnish to protect the paint job if desired. Was going to drywall but need help to figure out if painting is a option. Of course 60 grit really roughs up the wood so may be a bit overkill and would need to be followed with a lighter grit. I will be putting down new raised flooring to get rid of the old carpet but I want to update the walls first. Yuck:) my question is would it be easier to remove the paneling and trim and sand blast it outside then use a paint sprayer to paint? Fill cracks in your home quickly with Great Stuff Insulating Foam Sealant. Use denatured alcohol to clean your sprayer if you are using BIN. You can use almost any type of paint on polyurethane. Let the wood air-dry before proceeding. A fresh coat of paint can give almost any wooden piece, such as furniture, cabinets or room trim, a much needed face-lift. Relax. The question is can I go over this with a oil based polyurethane clear to finish the whole top, something like Cabots Cabathane Clear. I'm about to paint the next knotty pine room and am going to lightly sand bins the knots and paint white. Expect shaking to create bubbles in the liquid, which may … If you can’t find it in your area, you can click here to get it on Amazon, which is how I buy mine. When painting over polyurethane is important to provide excellent ventilation [set up a fan] and ALWAYS wear a respirator. Having a polyurethane finish over your chalk-painted surface is one of the many ways you can add beauty and protection to your surfaces. Chalk Paint Over Polyurethane - There are quite a few approaches to combine the milk paint, so we offer instructions on how to combine it and what consistency to look for, however, we promise to all times test just a tiny amount to make sure that you're delighted with the mix. Polyurethane can be used over enamel paint, which often provides a harder finish than latex-based paints. And difficult to use as well. One way to hide the cracks in tongue and grove walls before painting is to caulk between the boards with a paintable caulk. Answered. Double prime them if you have the time and energy. Otherwise you will have your surface starting to yellow a little sooner. 7. Not rubbing the Wil-Bond chemical on until you feel a “drag” 3. That said, our favorite family friends when I was a kid in the early 1960s had a farmhouse with knotty pine cabinets. You can apply polyurethane over any type of paint, as long as it's clean and has been properly prepared. A friend of mine who has a sprayer has offered to paint the pine for me, after following all of your tips of course :) However he has never used BINS before and was wondering what he uses to clean it out of his sprayer, before going to the next step of painting? Items I use and recommend, I would simply dunk it in the paneling, I would around. To polyurethane with the BIN I need to know what I have read about shellac, and does! The OG poster and others you feel a “ drag ” 3 light.. 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