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From Philadelphia
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Can you apply a second coat of hot mud joint compound once it is dried to the touch, but has not fully cured? For example, using the Sheetrock EasySand 20 powder; once mixed and applied, it dries to the touch in about 20 minutes or less. Can I apply a second coat right away, or do I have to wait several hours for it to fully cure before applying a second coat?
 

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you can, but I always give it a day to fully cure. reason why leaves zero dought in my mind that it would have problems.
 

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Drywall and Painting Pro
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Can you apply a second coat of hot mud joint compound once it is dried to the touch, but has not fully cured? For example, using the Sheetrock EasySand 20 powder; once mixed and applied, it dries to the touch in about 20 minutes or less. Can I apply a second coat right away, or do I have to wait several hours for it to fully cure before applying a second coat?
I do it all the time on ceiling repairs and wall repairs. :thumbsup:
 

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Yes as long as when you poke it it doesn't dent. don't go by color. sometimes if you use a lot of fill such as cornerbead it will take longer.
If you had to wait 24 hours between coats you might as well use bucket Mudd.
 
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