Sometimes, you may need to remove old exterior paint before repainting. If the old paint is cracking, peeling, or flaking, remove it entirely and start fresh.
If the existing paint is of the same type and the wall is in good condition, you can go ahead and paint without sanding. However, when it comes to wood, you may have to sand for proper adhesion. However, you can also skip the sanding process and make do with a primer.
Even if you don't have peeling paint, it's always a good idea to scuff up the surface of the old paint with 180-grit sandpaper to provide a good base for the new paint. You don't have to remove all the paint, just focus on the areas where it peels off easily and scuff the other areas where it still adheres.
No, you can paint over old paint, providing it is in sound condition and not peeling. If there is peeling paint or a cracked surface you must address those issues by scraping, sanding, and priming before applying a top coat of paint.
Yes, you should strip the paint before repainting, as the new paint will not adhere well to the old paint. Knowing which type to use and how the techniques work is the key to a successful, safe and satisfying de-staining job. Which type of product?
Yes, you can paint right over old painted furniture without sanding. You will need something called a DEGLOSSER and you can use this on OLD KITCHEN CABINETS to prep for new paint as well!
Remember you do not need to remove all of the paint, just the damaged and flaking portions of it. Any paint that can just be peeled off needs to be removed as it is not bonded to the underlying layers sufficiently.
Poor paint adhesion is one of the most common consequences of skipping the sanding step. Without sanding, the cabinet surface remains smooth and may have a glossy finish or residual substances that hinder the paint from properly adhering.
As long as the underlying paint is sound, you can paint over it, but to achieve a professional result, you'll need to know the specific factors that will give you a high-quality paint job.
If the wood's previously been used and painted, again sand it down, initially with a light-grade grit, bearing in mind that the purpose of sanding is to provide a solid base for the new paint so it's not necessary to remove all previous paint but the finish must be clean and with no loose or flaking areas.
Electric Sanders
Orbital (rotating) or belt sanders are a good option for stripping exterior paint. Sanders rip off the paint quickly. However, if you lay into the sander too hard, you risk gouging the wood. As with the other paint removal options, there's the lead-based paint problem.
It's important to have a clean house exterior before painting. Even if your house exterior appears clean, you should still give it a thorough check because things aren't always as they seem. It's always safer to wash it prior to painting, and one way to do so is by pressure washing houses.
Generally, two coats suffice for the majority of exterior house painting projects. The first coat acts as a base, while the second ensures an even, consistent finish. However, a third coat is sometimes needed for darker colors or if the surface is poorly shaped.
Removing exterior paint or stain is an important step before applying new coats of paint to the exterior of your home. If you don't remove problem areas where the old paint is failing, the new coat of paint will fail as well.
You probably don't need a primer paint if the new coat is the same type as the old paint. For example, both are oil-based. You can just pick the paint color you want and keep going. If the current wall is also smooth and clean, you can head straight for the paint.
Sanding the old paint on your exterior walls, wooden trims, and siding is the most critical job. The durabilityof the exterior paint job mostly depends on successful sanding of old paint from the surfaces.
If you're painting your house on your own, you need to remove old paint before painting the walls or hire professionals for this important step. Removing old, peeling paint helps the new paint adhere better, resulting in a smoother look that stays beautiful longer.
When You Are Painting Over An Existing Quality Paint Job. If the previously painted surfaces are in good condition, with no peeling or cracking, then a primer is usually not needed. If the surface has been cleaned and prepped properly, then two coats of quality paint should do the trick.
If the existing paint is in good condition, with small spots, stains, and damage, and there is not much difference between the type and color of the new and old paint, you can repaint the walls without removing the whole paint.
Liquid sandpaper, a.k.a. deglosser, is a chemical that can be used to rough up existing paint on walls and other surfaces by removing the gloss, making it possible to paint over what's left on the wall after use. This is good for hard to reach places or an object that you may feel would be awkward to sand.
The good news is that you can paint old furniture, without sanding, and it comes out beautifully. I've painted about 8 or 9 pieces of furniture, and I've gotten better results with each one. Here is my simple step-by-step guide to painting furniture without sanding.
Dimethyl sulfoxide (DMSO) has become more popular since it has a low level of toxicity, making it a safe replacement for methylene chloride and NMP. Opting for a safe active ingredient like DMSO or a manual paint stripping method will be far safer than risking NMP or methylene chloride.