Much less expensive and invasive. However, you can go as far as half mineral spirits and half poly. Many times you can recoat your exisiting finish by buffing it down and applying a new coat over the old. Q: How soon after the third coat of poly can you walk on polyurethane floors / hardwood floor?How soon after the third coat of poly can you put the furniture back on the floor? To be safe, I wait 72 hours before moving the furniture back into the room (but you can walk in stocking feet after 12-18 hours). Sand the small bubbles and drip marks with fine grit sandpaper. Hand sand corners, edges and under cabinet kick plates. The pro’s will call it a buff and recoat. When applying polyurethane on vertical surfaces, you may experience drips or runs. If you already have an open can of the floor poly I would go ahead and use it otherwise I would save money and get the standard poly. With your workpiece wiped clean, apply stain, photo below. Using a wax, furniture polish or other kinds of products will cause an adhesion issue for new polyurethane (it will bubble and peel off like a sunburn). The process: 1. Drying and curing times are increased in high humidity, so always be cautious before using your freshly-finished floor. It's best to apply polyurethane to flat (as in level) surfaces so the finish can self-level and is less likely to drip. Lightly sand with a dull 120 to 150 grit abrasive screen or #2 steel wool under a heavy floor buffer. This will allow the finish to dry faster, so you can sand the surface sooner. Start by choosing a type of polyurethane (oil or water-based) as well as a finish (matte or glossy), and make sure your work area is well-ventilated. And, make sure your pets don't walk on the floors … For a perfect finish use sandpaper between polyurethane coats. Then, prep your floor by sanding and cleaning it. Yes, a polyurethane-finished hardwood floor may have additional coats of polyurethane applied. (Skip the stain if you intend to leave your workpiece natural-color.) In a couple of hours, the dried poly just peels right out of the pan. Can polyurethane floors be recoated? You can then apply three coats of polyurethane to your floor, allowing each coat to dry, then sanding it and cleaning the floor in between coats. Either poly would have the same appearance. 4-6 hrs before you can walk on the floors; Hours 6-24, you can walk on the floors with socks. Also, we have noticed what looks like dust or sanding particles in the finish. When replacing furniture, do not slide. If Minwax® Sanding Sealer is used prior to Super Fast-Drying Polyurethane for Floors, apply following the label directions. 2. Typically, when you are thinning out oil-based polyurethane or oil-based varnish, you will be working with mineral spirits. First of all, you need to think about ratios. Minimize this problem by applying thinner coats or by switching from standard brush-on poly to a wipe-on or spray finish, both of which can be applied in very thin coats. 3. Between coats of polyurethane, examine the surface of the wood for imperfections in the finish. The floor poly just has a harder finish that would wear better for foot traffic. I keep a can of spray poly handy in case of bubbles. Even though it does dry quickly, keep in mind that every finish needs time to “cure” and harden. Apply stain and poly Move to a low-dust setting: somewhere without lots of foot traffic and with dust-free surfaces. Wipe away the dust and then apply the next coat of polyurethane. Apply the first coat of polyurethane, thinning it out with up to half of its volume of paint thinner. A light mist knocks them out. Avoid heavy traffic, and do not install rugs or clean floors for seven days. 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