Best way to prepare to paint over high gloss paint?
by
Louise
+15
I'm painting an acrylic front door a very deep red. I've primed and then applied the first coat. I've read that I need to lightly scuff it before the second coat. On the parts shown in the photo, I'm not sure if sandpaper should be used because it has the ins and outs that will be hard to do. OR, I read that using TSP instead of sandpaper works fine or also a de-glosser instead of sanding. What would be best? Would TSP or a de-glosser be harmful?
ALSO, a while back I painted a small bathroom a lightish brown in high gloss but now want to paint it again in a lighter color and a satin finish. So, the same questions apply to it.
I always sand, but have read that you can use a deglosser. Not much sanding is needed - just a slight scuff to help the adhesion of the second coat. In the bathroom, I would scuff the paint before painting again. Good luck with your projects!
here is info for you on this type of paint
https://woodworkingclarity.com/paint-over-high-gloss-paint-without-sanding/#:~:text=Yes%2C%20you%20can%20paint%20over,suitable%20primer%20and%20then%20paint.
I have always cleaned the glossy paint with a good cleaner degreaser, rinsed well, and let dry completely. Then I use a good primer such as BIN123 or Kilz pro. You can sand the primer lightly or not. If you are painting light over dark use 2 coats of primer.
Sanding in between coats is very subjective. It is not required that you sand acrylic paint in between coats, but it will definitely increase the outcome of whatever project you are working on if you do. Sanding in between coats is actually considered an advanced technique that pros use to get an excellent finish.
You don't need to sand whether glossy or not. Just clean it well. Like Dee says, prime with BIN 123 or Kilz. I always prime and like to use Kilz no matter what i paint. Then paint your color. You don't need to sand the finish paint in between coats.
Hello, You needed to Prime then undercoat and then 2 coats of top coat for the best finish. Your paint may well bubble off because it was not done correctly.
Sanding is up to you, although not really necessary with Kilz, a product I am familiar with. Just prime with Kilz, let dry and then paint. You have the option of sanding between two applications of Kilz, it really does not matter.
I used to work for a Paint and a Woodfinish Company and I gave you their reccommendations. I have never heard of the product you used to prime. If it was a short cut product - that's where you went wrong. If you take the time and do it right you should not have any problems.
When I paint using enamel (which is a high gloss), I prep before hand with lightly scuffing using steel wool then clean with TSP. I prime with Kilz. Then paint the first coat of paint. After it dries, I apply a second coat with no prepping of the first coat. I've been doing this for over 20 years and have never had any issues.
I always give it a light sanding. The paint needs something to hold onto when applied. Plus it is MUCH cheaper then buying a deglosser. The better the prep work the better the final outcome.
TSP is a cleaner really more than a deglosser. You can use sanding blocks which are rectangular and will fit in there. Sanding is your best option and it doesn't have to be perfect as it's essentially just a quick dash over it.
I have always used liquid sandpaper/deglosser. Just follow the directions carefully and use a liberal amount. If the finish is in good condition with no drips or bad areas from the previous paint job, there is no need to sand. Use a primer that is made to stick to glossy surfaces. This is what "grabs" on to the previous paint. Don't use cheap primer. Also, on this deep color, I would do two thin coats of primer. Don't expect the first coat of primer to erase the red. With the second (thin) coat, you should have the red gone or barely visible. Remember that primer is not paint and it will not give you a finished look. What it will do is knock down the dark color which allows your new color to cover much easier and the primer sticks to the former paint job and holds the new paint.
No need to sand between coats.
No take fine sand paper. Sand by hand the whole thing to be painted the paint will stick better
I've never sanded between coats and for painting over gloss, I would use a good primer then paint.