Bulging Screwheads Not ScrewPops...4 Year Problem

 
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Old 02-01-2006, 09:50 AM   #1
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Bulging Screwheads Not ScrewPops...4 Year Problem


We have been having a problem with high-end drywall construction for 4 years. We are screwing and gluing and sanding the screw heads after 3 coats. The house is fine while it sets, but when the heat is turned on there is usually a paper thick film of compound bulging on the screw heads. We are properly setting the screw heads and not breaking the paper. We have tried many different types of compound, glue, and screws. We are leaning toward moisture in the lumber, but in some cases it happened in both existing framing and new framing. Anyone else having this problem or does anyone have any ideas for a remedy? Thanks

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Old 02-01-2006, 04:25 PM   #2
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Re: Bulging Screwheads Not ScrewPops...4 Year Problem


You're probably using 1 5/8" screws, - - use 1 1/4" or even 1", - - you'll get less shrinkage along the screw length.
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Old 02-01-2006, 06:35 PM   #3
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Re: Bulging Screwheads Not ScrewPops...4 Year Problem


Any of these jobs involve trusses or really long spans?
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Old 02-01-2006, 08:41 PM   #4
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Re: Bulging Screwheads Not ScrewPops...4 Year Problem


do you notice this before or after it's been painted?
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Old 02-02-2006, 07:53 AM   #5
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Re: Bulging Screwheads Not ScrewPops...4 Year Problem


Usually large trusses in these houses. The problem is happening on almost every screwhead on the walls and ceiling. Usually in the middle floor of the house. We have seen it before the houses are painted and after. It just depends on when the heat is kicked on. They are so much easier to repair when nonpainted. Thanks
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Old 02-02-2006, 06:38 PM   #6
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Re: Bulging Screwheads Not ScrewPops...4 Year Problem


how are you finishing them without the heat being on? What are the conditions when you do the finishing?
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Old 02-03-2006, 01:00 PM   #7
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Re: Bulging Screwheads Not ScrewPops...4 Year Problem


The temperature is moderate enough in Georgia to finish without the heat being on. The drywall is usually done without the heating and air being operational. Space heaters are used if needed. The conditions vary, but the problem usually happens after the homeowner has moved in and turns on the central heat and air.
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Old 02-03-2006, 04:57 PM   #8
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Re: Bulging Screwheads Not ScrewPops...4 Year Problem


are you using a premix, or not? we always use easy sand 90, tow coats, and then a plus 3 third. have never had a prob, and dont sand them either
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Old 02-03-2006, 05:05 PM   #9
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Re: Bulging Screwheads Not ScrewPops...4 Year Problem


Thats an extreemy long time to have the problem, but is a seasonal problem, or only happens with a certian builder?.

I (once again) would have to agree with Tom R. It sounds like you may be using too long of a screw.

Next time, use a moisture meter on the lumber and see what it says.

Afetr four years, you should at least have the conditions figured out.
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Old 02-03-2006, 08:55 PM   #10
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Re: Bulging Screwheads Not ScrewPops...4 Year Problem


Quote:
Originally Posted by Peladu
Thats an extreemy long time to have the problem, but is a seasonal problem, or only happens with a certian builder?.

I (once again) would have to agree with Tom R. It sounds like you may be using too long of a screw.

Next time, use a moisture meter on the lumber and see what it says.

Afetr four years, you should at least have the conditions figured out.

It is the lumber pushing the screw out. The lumber yard is demanding lumber faster then the kiln can dry it. TRUST ME I AM PROFESSIONAL. I would back the screw size down as said above also.
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