LESLIE: Laura in Connecticut is on the line with question about painting over a stain. How can we help you today?
LAURA: We had some plaster work done and unfortunately, the gentleman used a rusty tool. What type of primer, what type of paint can we put over a stain? I’m afraid that I don’t know if it’ll bleed through or what it’ll do.
LESLIE: So, when you said that he used a rusty tool, are you seeing some areas of a sort of reddish patina in the plaster itself or is it changing over time? What are you noticing?
LAURA: Rust. Just rust from the tool.
LESLIE: So you’re seeing it in the plaster and of course, now that’s all cured and dried.
LAURA: Exactly. In the plaster itself.
TOM: Yeah, that plaster will leech through a traditional paint finish, so you definitely have to use a primer for painting over a stain here, right, Leslie?
LESLIE: Yeah. And I think your best bet is to use, if you can, a B-I-N or a Zinsser, one of those primers. They tend to be oil-based. They’re a little bit more heavy-duty. And those really do tend to cover up everything. So I think if you go ahead with a good coat of that as a primer, you’ll end up with, you know, the opportunity to seal all of that rust stain in. And then when you go put your topcoat on, you shouldn’t have a problem with that.
LAURA: Oh, OK. OK. Thank you very much.