When painting over polyurethane is important to provide excellent ventilation [set up a fan] and ALWAYS wear a respirator. Short answer: yes. simply put, yes. Warning Many of the products involved in this process have strong fumes. There’s an ongoing debate over which is more durable & long lasting. The oil hardens through a chemical reaction called cross-linking, or polymerization by intaking oxygen. An oil based poly will yellow over time and make the white paint yellow. Enamel traditionally refers to oil-based paint which dries very hard and will not rewet. The stain was color matched to our new hickory floors, which are stained a medium-dark true brown (no yellow). I would not put an oil based polyurethane over latex paint or oil based paint for that matter. Water-based polyurethane is well-suited for low-sheen flat, eggshell or satin latex paint. Reactions: PaintStud. Do not apply water-based polyurethane over the top of gloss latex and acrylic enamel. If your latex paint color is light or white, don't use polyurethane. Some still insist that durability is the main deciding factor between water based & oil based polyurethane. Polyurethane can be oil- or water-based, and you can use either kind over latex paint; however, oil-based polyurethane tends to yellow as it ages, whereas water-based varieties stay transparent. You can get universal tint at any art supply, and should mix with any medium. A Drying Oil is one that will harden to form a solid film after exposure to the air over time. The real difference between these two polyurethanes is that oil-based polyurethane has an amber tint to it whereas water-based polyurethane is clear. It will add resistance to spills, and a bit of resistance to scratching. Located in Hughesville, PA, RT Machine Company is a stocking distributor of new and used industrial woodworking machinery, offering over 600 woodworking machines within their 80,000 square foot warehouse, as well as parts, service, in-house staff and 5 traveling service technicians to troubleshoot machinery problems. If time is an issue, substitute the oil-based enamel paint with a high-quality 100% acrylic paint. They are compatible. As previously mentioned, latex is flexible in nature. To get unlimited color choices, all you need to do is buy a high gloss regular indoor oil based paint and cover it with a top grade clear urethane. There are water-based polyurethanes not suitable for application over lacquer or shellac. Oil-based polyurethane is simply a type of varnish. Jim Carroll explains why it’s not only acceptable to use a water-based finish over and oil finish – provided you do it correctly – but that it can be the best solution when you want to … But, I wouldn't use a polyurethane varnish due to concerns about how well it will adhere. The advantages definitely outweigh the disadvantages of oil-based polyurethane. Well, I much prefer a true satin or matte finish, but having gone through this before, I knew exactly what I needed to do. Acrylic Enamel Acrylic enamels are ideal for do-it-yourselfers who desire the durability offered by oil-based enamels, but want to avoid the unpleasant fumes. This is because the curing process for oil is polymerisation, and polymerised oil is akin to resin. The water based poly will remain clear. Epoxy paints are two-part paints which, unless mixed, will never cure. YMMV. In addition to this, oil-based polyurethane has a stronger scent to it and tends to dry slower than water-based polyurethane. It’s common alkyd varnish made with some polyurethane resin added. Among the three, alkyd-based enamels are the best to use on furniture because they are more durable and more elastic so the finish can expand or contract in different temperatures. I needed to just put a clear water-based polyurethane over the paint. That includes the various semigloss paints and stains, whether they are latex, acrylic or oil-based. Water-based polyurethane has its own significant advantages over oil-based polyurethane. Reply. Oil-based enamel hardens faster than water-based enamel but it has more odor and takes more time to dry. So in actuality they “cure” rather than dry. Do I sand between coats? Polyurethane originally was an oil-based varnish with more plasticity than older varnishes or paints. Read about company. Dolphin Paints Industries - Offering High Gloss Enamel Oil Based Polyurethane Paint, Packaging Type: Can, Packaging Size: 500 Ml To 20 Liter at Rs 300/litre in Pune, Maharashtra. Keep out of reach of children. Emerald is a modified oil hybrid. There are no significant advantages or disadvantages of applying water-based polyurethane over oil-based. Enamel traditionally refers to oil-based paint which dries very hard and will not rewet. Some examples of drying oils include tung oil, linseed oil, and walnut oil. You would be better off using a water based polyurethane. Woodworking Myth: You should never put a water-based finish on top of an oil-based finish. However, there is one thing that you need to have at the back of your mind before doing so. Oil based used to be unquestionably more durable. However, if you sand the surface and apply a sealing coat such as primer between the different layers, you can get by applying oil-based paint over latex. You can apply "oil" based polyurethane over "oil" based enamel, you can also apply "water" based polyurethane over "water" based enamel, never mix the two, there's to much of a chance for problems. The urethane protects the paint finish. This resin is hard but doesn’t provide the same protection as the oil-based resin which is … Enamel traditionally refers to oil-based paint which dries very hard and will not rewet. The polyurethane resin adds scratch, heat, … Always read the labels, as many oil paints, stains, lacquers and varnishes are extremely toxic. Water-based polys use an acrylic resin just like water-based paints. 1. There are excellent water-based polyurethanes to be used as clear wood finishes. Enamel traditionally refers to oil-based paint which dries very hard and will not rewet. Durability of Water Based vs Oil Based Polyurethane. Pros/Cons of Applying Water Based Polyurethane Over Oil Based. I might test the Krylon clear spray paint … Water-based polyurethane works very well, dries faster and is non-yellowing. If you are going to then use a water-based poly since it doesn't yellow like the oil based. Polyurethane originally was an oil-based varnish with more plasticity than older varnishes or paints. Alkyd is the resin used in almost all varnishes and oil-based paints. Varathane® Premium Polyurethane Oil-Based Wood Finish is specially developed to let wood’s natural beauty show through with the highest clarity over other oil-based polyurethanes. 2. Preparation is key. It is very likely that you will be using a chemical to etch the polyurethane. I haven't applied water based enamel over a previous oil based enamel painted surface but recommend you only buy a small can to start with. I tried a few different water based enamels on some new doors, architraves and skirting and found it very difficult to achieve a good finish. Can I use it over paint? 3. It will go over oil based enamel, but I would clean and sand as usual. You can apply polyurethane over any type of paint as long as it s clean and has been properly prepared. But a non-polyurethane varnish would have better properties that way, and look better to … Water-based polyurethane is technically a misnomer since polyurethanes are an oil-based product. A great finish to try is ZAR brand ULTRA Max – a waterborne oil modified polyurethane. Keep in mind that polyurethane, both the water based and solvent based is one of the worst adhering finishes you can use. Get contact details and address | ID: 21641891830 I read that I can use a water-based poly over an oil stain as long as I wait 72 hours. I'd like to use a water-based polyurethane over a staircase I stained last night with a Sherwin Williams oil-based stain to avoid yellowing. To successfully apply oil-based paint over latex, follow the steps below: Step 1: Sand the surface. Depends why you want to apply the poly over the enamel. You can put an oil based varnish over the lacquer. You might also put a coat of Zinsser Sealcoat on the wood before using the Polyureseal. If you painted your cabinets with any of these paints, apply a water-based poly over the top to prolong the life of the finish. If you don't do an overkill stripping the mineral oil off the finish is likely to peal on you. Choose between oil-based and water-based polyurethane. Source(s): put water-based poly on concrete floor and oil-based in living room and it looks like pee stains all over the place. Enamel traditionally refers to oil-based paint which dries very hard and will not rewet. Longer answer: if you wait for the oil-based stain to properly 'dry' (cure) it's no longer oily. Spray lacquer is commonly used on new furniture and in new construction. Save Share. Some of these water-based finishes are not for use over lacquer or shellac. Water-Based vs. Oil-Based Polyurethane Floor Finish Family Handyman 6/18/2020 US coronavirus: California reports more than 45,000 new coronavirus … The short answer is that stain polyurethane finishes can be applied over any paint or stain that is already properly applied to the surface and that has completely dried. Can I apply water-based polyurethane over an oil based stain? Oil based polyurethane will amber the paint, so use either water based polyurethane, or acrylic lacquer over your latex paint. Oil-based enamels are ideal for polyurethane treated surfaces that must remain resilient in the face of duress. What's the best top coat? What is Polyurethane? Polyurethane originally was an oil-based varnish with more plasticity than older varnishes or paints. Be careful when you go … Polyurethane originally was an oil-based varnish with more plasticity than older varnishes or paints . 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