Paint Wood Furniture: How to Permanently Cover Knots and Stains


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Pinterest Facebook Twitter Wooden furniture paint is facing difficulties! Learn how to permanently prevent tannin from leaking from wood stains and knot holes with these two tried and tested options. Also useful: How to choose the best furniture polish – How to refinish wooden furniture (no sanding!) – You should know tips for preparing furniture polishing and refinishing. Wooden Furniture: Preventing Tannin From Bleeding (How To Permanently Cover Old Knots And Stains) By Elisha of Pneumatic Addict This post contains links for your convenience. Learn more and read our full disclosure policy here. I like to build home furniture. Sometimes it is new and raw wood and sometimes I hide an old finish. Either way, I’ve painted wood furniture projects that looked great at first, especially with white or light paints, the tannins starting to bleed. Depressed! So what are tannins? Tannins are compounds found naturally in wood and other plants, including those found in coffee, tea, and grapes / wine. They help prevent disease and regulate plant growth. Due to their chemical nature, tannins seep into the surface, even after the wood has completely dried and carefully painted over. The chemicals in wood stains do the same. Stained wood, like mahogany on the wood pictured below, is the worst culprit. Knot holes are also repeat offenders! I went through the recommended steps for painting wooden furniture more than once: sanding, applying primer, two layers of paint and 2-3 layers clear finish, only to see small pink spots appearing on the surface. It gets angry! Sometimes large, discolored blobs of knots in the wood. I’ve tried every type of primer you can buy, even the “stain prevent” primers and the only product that hasn’t let me down yet is Shellac’s old backup. Wood furniture paint: Preventing tannin bleeding with shellac I first used shellac for a smooth finish when painting MDF, but it also makes a great foundation for preventing tannin. It comes in a brush form or in a spray can. Shellac can be covered with any type of finish (oil paint, water-based paint, varnish, etc.). I started wearing a coat or two before painting every time I used a light color. It dries very quickly so you can move on to your drawing without wasting much time. It’s worth a little extra time, believe me! Note: As always, follow the application instructions on the box carefully, following all directions. How to cover knots when painting wooden furniture Now what if you have one or two problems, such as knot holes? When I built my modern bachelorette boxes, I primed the raw wood with a BIN stain blocker primer and thought I was fine. Unfortunately, after two months, the knot is starting to appear! My secret weapon? Clear nail polish! Wooden Furniture Lacquer: Prevent the bleeding of tannin by using clear nail polish For a piece with a few problem areas such as wood knots or stains touched with a stain pen or wood repair marker (which I have found is almost impossible to cover), the simple top coat that Use it in your manicure will do the trick! Clean one or two layers of clear nail polish over the areas, without having to cover the entire surface. Then fill in any gaps or indents (such as around a wooden knot) with wood filler. In the sample palette below, all of the dark pigments are sealed securely underneath the nail polish and a first coat of paint. Indentation from the knot can now be smoothed with wood filler. The next time you pull the white paint, remember to treat the tannin bleed first! A simple cover of shellac or a few stains of clear nail polish gives you little protection from bleeding. More woodworking and finishing advice and inspiration: Please install this for future reference! Originally Posted on 04.11.2018 // Updated 04.16.2021 Pinterest Facebook Twitter Remodelaholic is a participant in Amazon Services LLC Associates, an affiliate advertising program designed to provide a way for sites to earn advertising fees by advertising and linking to amazon.com. Please see our full disclosure here. Publication date: April 22, 2021 File under: Contributor, DIY, Guest Blogger, Informer with Tags: Painted Furniture, Paint, Cabinet Painting, Repaint, Tips and Tricks


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