| Author |
Message |
David Axt, AIA, CCS, CSI
Senior Member
Username: david_axt
Post Number: 282
Registered: 03-2002
| | Posted on Tuesday, June 08, 2004 - 06:40 pm: |    |
An architect told me that Masonite no longer makes hardboard. Sure enough I can't find anything on the web. Maybe the siding litagation did that product in. |
Mark Handler, AIA
Senior Member
Username: maniac
Post Number: 6
Registered: 02-2004
| | Posted on Tuesday, June 08, 2004 - 06:46 pm: | |
Following the class action suit, Masonite ceased production of their hardboard siding.
http://www.propex.com/C_f_env_masonite.htm
|
Brett M. Wilbur CSI, CDT, AIA
Senior Member
Username: brett
Post Number: 57
Registered: 12-2004
| | Posted on Monday, August 08, 2005 - 10:54 am: | |
I'm also looking for masonite sheets to be used for protective cover board on carton void forms under suspended structural slabs.
Does anyone have any experience with this? Where can I get a spec for masonite? I'm in Houston with very expansive gumbo clay soils. |
Susan McClendon
Senior Member
Username: susan_mcclendon
Post Number: 24
Registered: 01-2005
| | Posted on Monday, August 08, 2005 - 11:18 am: | |
ANSI A135.4 is Basic Hardboard. As a product, it is still made but is pretty much a commodity. If you care about water absorption don't use hardboard, as even the ANSI does not limit absorption to less than 25 percent for 1/8 inch board, with maximum swelling of 20 percent in thickness. The Composite Panel Association, at www.pbmdf.com, has a list of manufacturers. |
Dave Metzger
Senior Member
Username: davemetzger
Post Number: 123
Registered: 07-2001
| | Posted on Monday, August 08, 2005 - 11:30 am: | |
You also need to note whether you want standard (untempered) hardboard or tempered hardboard, which is standard hardboard subjected to a curing treatment increasing its stiffness, hardness, and weight. |
Susan McClendon
Senior Member
Username: susan_mcclendon
Post Number: 25
Registered: 01-2005
| | Posted on Monday, August 08, 2005 - 11:32 am: | |
Yes, and the water resistance values I mentioned are for tempered hardboard. All the other classes are even worse. |
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