PlainPainter

HELLO People - we are talking about setting type joint compounds - this stuff is basically hot like plaster! It has calcium hydroxide as an ingredient - just like plaster. Some plasterers even advocate using this stuff with drywall tape to do all the seams of bluboard prior to veneer plastering - in lieu of just using their veneer plaster mix. You can't prime that stuff for a month! This is a very different product from the green and blue lid joint compounds - they're neutral in ph and fine to prime as long as it's dried - setting type compounds you have to obey a very different prep. You want a way around this? Skim over the setting type compound with the green lid ready mix stuff - and then you can prime quickly - you like that tip?

Jason W

I see hot mud primed all the time!!!


and yes, I've stuck around long enough to see it work

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Vermont Historic Preservation Group

chameleon

After reading all of the possibilities onl one person asked the question which I was thinking.....can you see the joint tape ???? I am thinking not enough mud under the tape....when moisture from the primer absorbs into the surfaces....it lifts the tape because there is nothing under it....after you see the project fill us in.

DeanV

I never saw the job first hand, he lives about an 1.5 hours away from me. It sounds like the problem was that the mud was set but not dry. The mud was applied in multiple coats in one day and then sanded the next, but all the moisture must not have escaped which caused the peeling. This was over a year ago now, but after the peeling was removed at the seams and drywall left to sit a while longer, there were no more peeling issues.