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Old 08-19-2010, 01:54 PM  
D725A
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Default Screwing AC registers in ceiling

After some coats of new plaster on our old 1920s ceiling, i now have to re-install the AC register, which has four screw holes. Before I took it down it was installed with four two-inch screws right into the plaster, no anchors etc. and since the register is relatively light and doesn't get taken down and re-installed that often, they were holding pretty well.

However now the holes are plastered up so in lining things up i may not hit the exact place again. At any rate there's about an inch of plaster, then wood lathing, likely not a joist above every screwhole. I could just drill a pilot hole and repeat the old setup, hoping a few of the screws connect with the lathing. I could also use plastic anchors, which might facilitate future removal/replacement for duct cleaning etc.

Any thoughts?



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Old 08-19-2010, 03:45 PM  
kok328
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In my opinion, as long as you drill pilot holes to prevent from creating outward pressure on the plaster; either option would be fine.



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Old 08-19-2010, 09:29 PM  
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Default pilot holes

Thanks for the reply. The trick is the thinnest masonry bits i've seen are 3/16"--there are probably thinner--which are far thicker than the screws themselves, so i'd probably have to chance it with a regular bit if I didn't want to use anchors.

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Old 08-20-2010, 11:04 AM  
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Double sided tape or adhesive backed velcro is another option.

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Old 08-21-2010, 06:27 AM  
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Default velcro

yes, thanks, great idea (love the ingenuity displayed on this site.) if the lip of the register can contain the thickness of the velcro without creating a space between the register and the ceiling, then that's a good choice since the register can more easily be periodically removed and replaced for duct cleaning etc. thanks again.



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