What's the best instrument to paint plaster, should i use primer?
ive painted my plaster walls and didnt use a primer--but the walls were of frothy color to begin with. and it looks great
It all depends on what is painted on it already. If it hasn't be painted then you need to use a primer first. You can enjoy the primer tinted close to the shade of paint you will be using. If it was painted with grease based paint then you will hold to prime before using a latex paint or it will peel. If you made repairs to the plaster, yes you obligation to prime the repaired areas before your put on the finish paint.
Answers: Yes, you most definitely should use a primer otherwise the plaster will suck the moisture out of the paint, most often within uneven and blotchy ways, giving you a very askew sheen and finish to your paint job.
Wipe the plaster with a slightly dampened cloth to remove plaster dust. Then prime and paint. Pay special catch sight of as to whether the primer is building or if it is being absorbed into the plaster. More than one coat of primer may be obligatory to build a well-primed surface to which paint can adhere.
If this is a new plaster wall, plaster supposedly should cure for 30 days earlier painting.