I've got a weird situation where I need to hang sheetrock upside down, like
on a ceiling. The board has to span 28 inches between supports. There is
no way I can put any more support between the span. Is there any special
sheetrock that is stronger than the regular stuff I can get at the borg?
Any recommendations would be greatly appreciated. Thank you.
There is nothing "weird" about installing sheetrock on ceilings;
that's typically how houses are finished. Installing sheetrock on a
ceiling "upside down" would mean installing it such that the
(typically) brown, unfinished side is exposed to the room.
benick made a sound recommendation to use 5/8" sheetrock. That's what
I use for ceilings.
You're right Rico. Not enough info.
I am wrapping the main trunk in the basement. On each side of the trunk,
I've got metal studs hanging down from a track. The bottom track is in the
same plain as the bottom of the trunk. This was done to get the most
headroom. The sides have got 1/2" sheetrock already installed. I really
don't want to drill holes into the bottom of the trunk to tack the
sheetrock, but I am thinking I might be forced to keep the sheetrock from
DON'T install screws into the sheet metal duct, you will have nothing but
troubles as the sheet metal duct moves all the time as it heats up and/or
cools down, and it won't stop sagging as the sheet metal will just sag by
being pulled down by the weight of the drywall.
I have heard/read of some very strong "drywall" type materials, you may have
to do some Google research and it is expensive and special order once you
find a supplier.
How about under the span? Can you spare an 1-1/2" headroom to run 2x4s
at 16" o.c. perpendicular to the existing framing?
Both 5/8? type X and 1/2" high-strength ceiling panels are rated for 24"
o.c. framing. Both should be available, and some claim the 1/2" has
better sag resistance than 5/8". I'm not going to say go ahead and do
it, though. I don't know enough about the situation.
5/8" board might do it, but I don't know that it is rated for more than a
24" span. There is also special ceiling board (used it once hanging
professionally for about a year), but again, 24" span, not 28".
A picture would help a lot...
Without really understanding your situation all that well, how about
stiffening the sheetrock by screwing it to sections of firring strips
that will be perpendicular to the joists and fit between them and any
other obstacles (attached only to the sheetrock, before it goes up.)
I just did this exact same setup in my basement( pics to follow in
another post soon). I have the supply and return running next to each
other spanning about 4 feet. What I did was first put some liquid
nails on the 1/2" sheetrock in the middle where the span was the
greatest. The I put 2 or 3 screws at the edge of the return trunk
( It's just return air). It's solid now, no problems.
Your situation is a little different. It sounds as if you have just
the one supply trunk. You would have to drill right smack in the
middle of the supply trunk, which I don't think its good. I agree with
everyone else, 5/8" sheetrock would do the trick. It should span 28"
with no problem. If it makes you feel better put some liquid nails or
Loctite power grabber in the middle.
HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.