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Hello all,

I just sprayed two coats of sherwin Williams shellac primer on my interior T&G ceiling. It hasn't even been 2 hours and it is failing.... I have several spots where I am getting cracks and breakthrough. I prepped the surfaces by sanding the entire ceiling, wiped it down with a little bit of TSP, and then wiped it down with water. I was hoping to do two coats of paint but that doesn't seem like a good idea just yet. Anyone have any suggestions as to what to do next or what I did wrong?
 

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Hello all,

I just sprayed two coats of sherwin Williams shellac primer on my interior T&G ceiling. It hasn't even been 2 hours and it is failing.... I have several spots where I am getting cracks and breakthrough. I prepped the surfaces by sanding the entire ceiling, wiped it down with a little bit of TSP, and then wiped it down with water. I was hoping to do two coats of paint but that doesn't seem like a good idea just yet. Anyone have any suggestions as to what to do next or what I did wrong?
Ouch. I'm wondering if you sprayed it on too thick. Looks like solvent entrapment. Personally, I would scrape any loose stuff and skim the cracks with sheetrock. I'm also wondering if those pine surfaces are too soft for BIN. BIN is quite brittle to begin with. Was this bare Pine?
 

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