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Posted by Norminn on September 14, 2007, 9:45 pm
Finman wrote:
> I am pulling my hair out. I had a bedroom and bathroom constructed in
> my basement. 5 days after the drywall had been mudded and sanded I
> put on one coat of Kilz Oil based primer. The next day I put on a
> coat of satin latex based Behr paint on the ceiling. 1 day following
> the ceiling paint I used Behr Bed and Bath paint on the walls, WITHOUT
> cutting in, I was leaving the cut in for last (doesn't make sense I
> know). I followed that up the following night with a second top
> coat. The second coat was applied pretty thick with a 3/4" nap. That
> night I left a window open in the basement to help alleviated the
> smell. It got down to 45 degrees that night and I had 65% humidity in
> the basement. When I checked the bathroom the following morning there
> was sweat all over the walls. There was even a small amount of sweat
> above the shower where there would be green board (the shower has
> never been used). That's my first mystery. I let the room sit for two
> days without touching it. After two days I went to remove the tape
> and the layers of top coat peeled away in many areas when I tried to
> remove the tape. The walls felt like they could have been a slight
> bit dusty underneath. I'm trying to figure out what caused these
> issues and what I should do next. PLEASE HELP!!
>
I think it likely that the mud was not sufficiently dry, and oil-based
primer over that was not the right choice. I don't know the normal set
time for mud, but in a damp basement I would expect it to be longer.
Oil-based primer is the wrong choice for new wallboard, as far as I
know. Latex is recommended, and there are special latex primers for new
wallboard. Painter's tape should be removed as soon as the paint is
applied, even if you must do a second coat, as the paint film
overlapping the edge of the tape is continuous with the film on the wall
and pulls away with the tape if allowed to dry. Don't ask how I know :o)
I started painting a bath in my home, roughly 3 hours after the last
shower. I tried to brush paint (alkyd) onto the ceiling and the brush
just slid across the ceiling = there was still enough moisture in the
bath, even with exhaust fan, to keep the ceiling wet. I wiped it dry,
got another fan going, and the paint went on fine.
For painting in a basement, I would allow more time for drying than the
label calls for, and do it in warm, dry weather.
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