Joined
·
2,331 Posts
basic question: is 3/8 used for ceilings while 1/2 is used primarily for walls?
thanks
thanks
3/8 vs. 1/2
1 - 20 of 34 Posts
Joined
·
1,586 Posts
3/8 can be used for curved walls or on repair work. It can also be applied directly over plaster.
Joined
·
2,331 Posts
why is thicker/heavier used for ceilings? i would expect it would be better if it is lighter.
Joined
·
524 Posts
Joined
·
2,331 Posts
thanks. makes perfect sense now.
3/8's should only be used for strange repairs and curved walls. Everything else should be 1/2" or 5/8"s.
PS.
1/2" is perfectly fine for ceilings, if your joists/trusses are 24" on center you need to use 1/2" CD board.
5/8" is good for everything but then there are drawbacks, such as cost, more work to install, acoustically it will change the way a room sounds and if used on both sides of a wall it may cause difficulties with trimming your doors.
PS.
1/2" is perfectly fine for ceilings, if your joists/trusses are 24" on center you need to use 1/2" CD board.
5/8" is good for everything but then there are drawbacks, such as cost, more work to install, acoustically it will change the way a room sounds and if used on both sides of a wall it may cause difficulties with trimming your doors.
Joined
·
2,153 Posts
1/2" is acceptable on ceilings if framing is 16" o.c., 5/8" for 24" o.c. framing.....
Joined
·
1,192 Posts
Unless there is a requirement for a fire rating or some other assembly. SFR's using TJI's will often be required to use 5/8" type X drwall because engineered lumber burns much more rapidly than nominal sawn lumber. Some areas have recognized the use of fire rated 1/2" GWB, but this is not universal
I'm sure that BJ knows this
Do you not have "CD" board in your area? 1/2" CD board is designed for 24" spans.
As for fire ratings, that's a seperate issue and code specific to different areas.
Dan
Joined
·
1,586 Posts
Cheaper? I think not. At least not in cost. It is a cheaper (inferior) product though.
Joined
·
1,192 Posts
Funny thing is, as per modern fire ratings, you should have used 5/8 Type X or 1/2 fire rated board in your garage.
Joined
·
1,192 Posts
The garage is the most flammable spot in the house
3/8" should not be used period. It is made for specific purposes as I stated above.
New houses here are built with 1/2" regular drywall.
5/8" or 1/2" Fireguard is not required, nor does it make the garage "Fireproof".
Fireguard, Type C or Type X... all it means is that it has a rating, a set of properties. It simply performs a certain way at a certain temperature for a certain amount of time.
Even 1/2" regular will "protect" against fire to a certain degree.
New houses here are built with 1/2" regular drywall.
5/8" or 1/2" Fireguard is not required, nor does it make the garage "Fireproof".
Fireguard, Type C or Type X... all it means is that it has a rating, a set of properties. It simply performs a certain way at a certain temperature for a certain amount of time.
Even 1/2" regular will "protect" against fire to a certain degree.
Joined
·
1,586 Posts
It has been a while since I hung drywall, but I am pretty sure that the house/garage wall must be hung with firecode drywall. I seem to recall doing that every time.
Joined
·
9,747 Posts
There are no codes on drywall at all, here.
1 - 20 of 34 Posts
