Replies

1. 
   FastEddie1 | Jun 17, 2004 07:10pm | #1

   Do you have a brand name?  You might get a better response that way.

   Whenever you are asked if you can do a job, tell'em "Certainly, I can!"  Then get busy and find out how to do it.  T. Roosevelt

2. 
   calvin | Jun 18, 2004 04:19am | #2

   If you're talking about the aac block, email me and I'll put you in touch with this mason in NC around Burnsville that built this for himself.  I believe he did some study in europe b/4 he built this place.  Good guy, should be willing to give you some information.

   Remodeling Contractor just outside the Glass City.

   Quittin' Time

3. 
   UncleDunc | Jun 18, 2004 04:46am | #3

   There have been two articles that I remember in FHB about AAC projects, one feature article and one short notice. Search the Article Index at http://www.taunton.com/cgi-bin/artresult-fh.cgi

   I've seen several statements on the web that the "effective R-value" that the AAC vendors brag about is somewhere between fantasy and science fiction. The number I remember seeing is R30. When challenged they admit that no of course an 8" block wall isn't really R30, but it performs like an R30 wall in certain conditions. Certain very narrowly defined conditions that hardly ever occur in nature, I suspect. IIRC, the real value is R8, which is not trash, but it means an AAC wall would require more insulation pretty much anywhere in the US. Unless you want to think about a 30" or 40" thick wall, which could have some advantages in tornado country.

1. 
   BillHartmann | Jun 18, 2004 10:37am | #4

   The IRC make special adjustments for "high mass" systems.

   In my area R-18 is required for normal walls, but only R-11.9 is required for high mass wall systems with either external or interal insulation.