Getting ready to roll on some acrylic on some 10mil pvc (Komacel). I have done this in the past by lightly sanding the surface and applying the paint directly without primer, bonds nicely. Anyway my question is, how long should I wait untill I can add a second coat, if needed? Do I have to sand in between coats?
Posted by Ray Rheaume (Member # 3794) on :
"Anyway my question is, how long should I wait until I can add a second coat, if needed? Do I have to sand in between coats?"
I'm not gonna be dumb enough to give a generic answer for the first part. Without knowing the exact brand of paint, it would be a shot in the dark. The answer can usually be found on the can itself, and they can differ quite a bit from one company to the next. Have a peek.
As long as you get a smooth first coat, I doubt you'll need to sand anything.
Hope this helps... Rapid
Posted by Weston Pulley (Member # 10330) on :
Sorry Ray, I agree, the questions were a little vague. Let me try again. According to the directions on the can, it says I can re-coat in 2 hours. The problem is latex takes some time to cure. I wasn't sure if I should allow additional time in between coats?
Posted by Graham Parsons (Member # 1129) on :
When we use acrylic on pvc, I try and leave overnight between coats - acrylic latex needs to cure, not just surface dry, especially on the darker colours.
Posted by Weston Pulley (Member # 10330) on :
Thanks guys!
Posted by Sheila Ferrell (Member # 3741) on :
Graham I mostly agree . . . the only exception could be if he can set the painted peice in the sun to dry, or if the air is very warm AND dry. High humidity might even cause the cure to take days. With the utmost respect to Ray, one does not HAVE to sand prior to a second coat, though no matter how hard we try, the inevitable dust fleck(s) will appear somehow . . . but the second coat always seems to look better and you just 'feel' better about the overall adhesion if you do a light sand between coats. I think sanding between coats is a good habit. It takes little time, and if it does not improve the second finish, it certainly can not hurt it.
