Ronseal RSLKBPU25L Knot Block Primer and Undercoat, White, 2.5 Litre

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Knots can add visual interest to stained projects, but knots in painted projects aren’t attractive when they bleed through our paint. If you want to use a water-based product, look for a high-build acrylic-latex enamel undercoat that’s specifically designed to be sanded. Choose a high-quality paint suitable for your project, such as an acrylic latex paint for indoor applications.

Hope this information helps you make a recommendation. Sorry for the long post! Appreciate your time to read it and reply if you can 😊Alternatively, if your drywall is relatively smooth and the topcoat is going to be a flat paint, you can skip the primer and use two coats of high-quality self-priming water-based flat paint (see “Self-Priming Paints,” below). The heavy-bodied paint resins in self-priming paints seal the surface and fill imperfections (which are less visible in flat paint anyway). BM Advance came highly recommended a few times for my finish coats and I just read your segment on it for trim and cabinets. However, I am curious… what route would you go for primer/sealer and paint if this was going in your house? At that point, just spot prime with BIN (link above) and touch up. NOTHING gets through this primer, period.

Zinsser B-I-N Shellac-Based Primer:This high-performance primer is specifically designed to seal knots and other porous surfaces, preventing bleed-through and providing a smooth base for paint application. IMPORTANT: Please follow the instructions for your heated paint remover and work safely. 2. Sand the Wood Previously, I painted my neighbor's wooden fence, and they were concerned about knots bleeding through the paint.As always, using poorly engineered primers (and paints) is more expensive in the end. Spending more upfront saves money in the long run. Choice #1: Simply the best As to your question, always do a test sample. Find some knotty pine, treat it as you did the fireplace and do some testing. The bottom line is whatever you are happy with is what is good. If we have a knot that is oozing sap, we need to stop it from bleeding before moving on to the next step. We can move onto Step 2 if our knot isn’t oozing sap. Depending on the location and use of the painted surface, you may want to add a protective topcoat.

Since what you have is oil-based stain, I’m not sure the latex is going to bond. But what will bond is a quality oil-based primer, then any latex coatings you like.

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Whether you’re painting the living room or a patio table, applying a prep coat of primer to the surface can improve adherence, prevent peeling, and reduce the number of coats needed to finish the job. While all primers contain more resins and less pigment than paint, formulas vary from product to product. We tested some of the most popular options to find out which primer works best for different situations.

Despite taking necessary precautions, you might still encounter some issues with knots bleeding through paint. Issue: The primer and paint products used are not compatible, causing the paint to peel or not adhere properly, exposing the knot.The BIN spray can is good for any small extras you did not get the first time, but you have to be careful with overspray: it does not come off! Water-based primer is best for walls and ceilings. Oil-based primer is primarily used for doors, windows, metal, woodwork, or over tough stains in well-ventilated areas. Q. Which is better: primer or paint with primer? No, but using a paint primer does reduce the amount of top coat paint needed, and it protects and seals the surface. Why Trust Bob Vila Earlier, we talked about how we can’t paint over a knot that is oozing sap because the sap will continue to ooze and bleed through our paint. You’re repainting a previously painted surface in the same color or going from a lighter to a darker paint color.