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Mudding Lath ceiling patches with nicotine stains

Mudding Lath ceiling patches with nicotine stains

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  #1  
Old 02-26-17, 03:23 PM
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Mudding Lath ceiling patches with nicotine stains

I had to repair two cracks in the ceiling lath as well as pull down a 1'x2' or thereabouts section of the lath and put some drywall in as a patch. I will be removing the screws - not mudding over those.

I used Fixall for the cracks as well as filing in any of the gaps between the old lath and the new drywall patch. I never mudded it after that so this path has basically be sitting as is for at least a year.

My parents both smoke in the house and my question is: Do I need to clean the surrounding lath and drywall patch to rid it of any nicotine residue in order for the tape and mud coats to adhere properly? If so, what should I use to clean it?

 
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Old 02-26-17, 03:41 PM
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It will adhere, but the stain will transfer to the surface of the mud as it dries. You will need to prime the ceiling with a stain blocking primer. Kilz original is one of the best, Zinsser B-I-N is another. Avoid latex primers as they don't block nicotine the best.
 
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Old 02-26-17, 04:32 PM
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Thanks. Yeah I know I'll need to prime. I'll likely use BIN in the smoke effected rooms.
 
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Old 02-26-17, 07:01 PM
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What I meant was that you don't need to prime before you mud... you can do it after.
 
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Old 02-26-17, 08:43 PM
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Yes, I understand what you meant. Thanks.
 
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