Rated 4 out of 5Â by Lawrence1954 Zinsser Cover Stain
Purchased to cover a ceiling stain that keep coming back after painting..
After applying the cover stain we had no problems with stain coming back through paint.
Rated 4 out of 5Â by IainG Good Quality Product
Good quality, easy to use and covers well.
Will need more than one coat on my coving, so hence reduced rating.
Rated 5 out of 5Â by RobLincs Good for use prior to paiting.
I bought this to use as an oil based primer for a new front door and frame prior to finishing with Farrow & Ball water based under coat and top coat. I was told that I must use an oil based primer first and this was recommended by a number of people. It's good stuff but it is thick and takes a little while to learn how to paint it on. A second coat if required can be thinned with white spirit (5% max).
Rated 4 out of 5ï¿½ï¿½by alec21 Good stain block and sealer
I've used this to cover stain on ceiling and wall plasterboard and it works pretty well. Stubborn stains need more than one coat.
I've also used it as a primer/undercoat for bare wood and, again, it has been affective.
One point which may help others: as an oil based undercoat it raises the grain less than water-based products - but also takes longer to dry. I have compromised by using it as sealing first coat and then using a acrylic-based paint for the following coats. This has worked well.