I have a water stain (brownish) on my bathroom ceiling.
Problem has been corrected, and I don't expect a repeat.
Would like to put Kilz Primer/Sealer over the stain.
Since I don't expect any further leakage, can I use a water based Kilz
instead of their oil based product ?
Or, would the brownish stain would eventually bleed thru any water based
Kilz, even though the stain is dry now ?
The reason I ask, is that the ceiling is presently painted with a latex
paint, and if I have to put the
Kilz over the whole ceiling to make things blend well for the future topcoat
of a regular paint, I know an oil based product
like Kilz oil would probably not go over the presently latex painted ceiling
I'd use Zinsser BIN - it's shellac. It's a great barrier material
that almost nothing bleeds through that.
I use it on walls that have had wallpaper removed, just in case any of
the glue survives the cleaning, and have yet to have a problem with
moisture activating the glue and doing funny things to the paint I put
on over the top.
I've had nicotine bleed through several coats of the water-based Kilz,
and this was on a wall that had been cleaned pretty thoroughly with TSP.
I had high hopes for the water-based, but no luck. One coat of the
oil-based did the trick. So the type of primer most definitely makes a
That's nicotine, though. I don't know what caused your stain, but it
sounds to me like it would make sense to give the water-based a try &
see if it gets the job done. It's more expensive, though. Maybe you
could find it in quart size. (Our local Sears had gallons only, if I
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