Normally no. If someone ran a water line improperly there might be a
problem. But honestly if .25" makes a difference I have never encountered
it.
Colbyt
The difference is more like 0.5" (0.375" difference in screw length +
0.125" in drywall thickness). A local big box store carries 1.25" and
1.625" screws for drywalls. The former is for 1/2" drywall and the
latter 5/8". I could understand the need for longer screws to hold the
weight of thicker/heavier wallboards, but wondered if there's a downside
to using the longer screws for the thinner type of drywall. My thinking
was, if there's no downside to doing that they could/would stock just
the 1.625" kind.
The difference is more like 0.5" (0.375" difference in screw length +
0.125" in drywall thickness). A local big box store carries 1.25" and
1.625" screws for drywalls. The former is for 1/2" drywall and the
latter 5/8". I could understand the need for longer screws to hold the
weight of thicker/heavier wallboards, but wondered if there's a downside
to using the longer screws for the thinner type of drywall. My thinking
was, if there's no downside to doing that they could/would stock just
the 1.625" kind.
Drywall screws are used for a lot more things than drywall, that is why they
stock them. In my screw collection I stock everything from 1-3". In some
special cases I buy longer ones.
For all practical purposes in residential construction the 1 5/8" screw is
the correct one to use.
I can't promise you that some dufus did not run a wire or pipe where it
should not be. That is the risk you run anytime you work on a structure.
Colbyt
Remove the cover plate or shroud for a lighting fixture, wall outlet or
other electrical device.
You should be able to see the thickness of the dry wall along the side of
the electrical box.
First, turn off the electricity at the fuse box/circuit breaker for safety.
TKM
I'm puzzled by your question, but maybe I'm not reading it correctly.
I presume that if you're asking that question it's because the "ceiling
drywalls" are already in place so you can't measure their thickness
directly.
If that's the case, why do you need screws? Is it sagging down in some
places and you want to try and correct that with some more screws?
Just wondering,
Jeff
Well, If you stepped on it in the attic, then you should be able to see
if there are any wires or pipes running through whatever joists or
strapping you need to screw into, and keep away from them if there are.
So just grab a few screws about 1-1/2" long and start screwing.
Glad you didn't fall right through. :-)
Jeff
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