Previous in Forum: Feasibility Studies for Plant Design   Next in Forum: Boiler Flow Direction
Close
Close
Close
5 comments
Rate Comments: Nested
Anonymous Poster

Regular vs. Type X Drywall

02/06/2009 11:31 AM

Are there any visible means of knowing if you are looking at regular drywall or "Type X" (fire rated) drywall--are they labelled or something?

Reply
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.
Guru

Join Date: Oct 2006
Location: New Jersey U.S.A.
Posts: 1114
Good Answers: 38
#1

Re: Regular vs. Type X Drywall

02/06/2009 12:20 PM

Depending on where it was made may give you a clue. Fire rated is made with mixing a non combustible fiber with the gypsum. Unless you can easily see the gypsum (hole cut for receptacle) and actually see the fibers it's very hard to tell what type it is. Even this may not help. If it is new and still stacked and held together with the tape, it should state the rating or have a brand name on it.

__________________
The last fight was my fault. My wife asked "What's on the TV?" I said "Dust!"
Reply
Anonymous Poster
#5
In reply to #1

Re: Regular vs. Type X Drywall

02/10/2009 11:36 AM

Thanks,...sorry to hear that.

Reply
Guru
United States - Member - USA! Hobbies - Musician - Sound Man Engineering Fields - Mechanical Engineering - More than a Hobby Technical Fields - Technical Writing - New Member

Join Date: Oct 2008
Location: City of Roses.
Posts: 2056
Good Answers: 101
#2

Re: Regular vs. Type X Drywall

02/06/2009 2:30 PM

If your looking at new sheets it should be printed/stamped on each sheet somewhere. If its already installed/papered over/plastered/painted, it might be a bit harder.

__________________
Don't believe everything you read on the Internet!
Reply
Guru

Join Date: Feb 2008
Location: Milky Way galaxy, Sol solar system, Earth (not Giaha), USA, WA, N.E.
Posts: 691
Good Answers: 13
#3

Re: Regular vs. Type X Drywall

02/06/2009 8:52 PM

Most drywall is inherently fire retardent due mostly to the fact that gypsum turns to water (or rather expells the water in it) when heated to suficient temperature. That is why if you need more fire protection you should put up thicker drywall.

__________________
They that do not learn from history and apply those lessons to the present are bound to repeat its failures.
Reply
Anonymous Poster
#4

Re: Regular vs. Type X Drywall

02/07/2009 3:14 AM

It all depends on the manufacture, thickness, age, and condition of the drywall. if it is 1/2" type X it will be stamped on the factory ends of the sheet. the best "ruel of thumb" is if it is 5/8" drywall it is type x. but with 1/2" you will have to look at the back side of the sheet if you can't see the factory "bevels" on the sheet.

Reply
Reply to Forum Thread 5 comments
Copy to Clipboard

Users who posted comments:

Anonymous Poster (2); charsley99 (1); RVZ717 (1); Shadetree (1)

Previous in Forum: Feasibility Studies for Plant Design   Next in Forum: Boiler Flow Direction

Advertisement