Replies

1. 
   Dam_inspector | May 06, 2009 04:36am | #1

   February 11, 1994

1. 
   frammer52 | May 06, 2009 10:59pm | #2

   Whydid they di that?

1. 
   Dam_inspector | May 06, 2009 11:30pm | #3

   I don't know why, but this is what I found. http://www.archive.org/stream/energynotesmonta00montrich/energynotesmonta00montrich_djvu.txt

1. 
   john7g | May 07, 2009 12:03am | #4

   but that's for Montana (aka MT).  i though the OP was aksing about MN (aka Minnesota).     ????

1. 
   Dam_inspector | May 07, 2009 12:11am | #5

   You're right. I'm not good with state abbreviations sometimes.

2. 
   IMERC | May 07, 2009 01:27am | #6

   for more R value after insulation... 

   Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and loudly proclaiming<!----><!----><!---->

   WOW!!! What a Ride!

   Forget the primal scream, just ROAR!!!

    

   "Some days it's just not worth chewing through the restraints"

2. 
   Dam_inspector | May 07, 2009 02:19am | #7

   I was wrong on that date, sorry.

3. 
   DanH | May 07, 2009 02:29am | #8

   I'm thinking it was the late 70s.

   The modern conservative is engaged in one of man's oldest exercises in moral philosophy; that is, the search for a superior moral justification for selfishness. -John Kenneth Galbraith
4. 
   averagejoe | May 07, 2009 05:54am | #9

   they don't, they require r-19 insulation in the walls...and for all insulation systems except closed cell foam (FG, cellulose, open cell, etc.)you need the depth of a 2 x 6 to get it. If you are using closed cell foam, you can use 2 x 4's if you want.

1. 
   thetigger | May 07, 2009 04:55pm | #10

   make sense. thanks guys. Tigger

2. 
   Piffin | May 07, 2009 05:05pm | #11

   There are several ways to get the R19 with a 2x4 wall. it's too bad that some local AHJs are still looking at archaic methods from the seventies as the only solution. 

    

   Welcome to the Taunton University of Knowledge FHB Campus at Breaktime. where ... Excellence is its own reward!

1. 
   averagejoe | May 08, 2009 01:04am | #12

   I'm assuming you are talking about using rigid foam either on the outside or inside of the framing in addition to whatever is in the actual cavity...

1. 
   Piffin | May 08, 2009 01:21am | #13

   Yes, or Mooney walls, or SIPs 

    

   Welcome to the Taunton University of Knowledge FHB Campus at Breaktime. where ... Excellence is its own reward!

1. 
   averagejoe | May 08, 2009 05:48am | #14

   Of course...I misunderstood your first reply. I thought you meant there were lots of ways to get to r-19 with a typical 2 x 4 framed wall. Working in a major metro area is such a pain...building officials rarely want to think out of the box. Occasionally, I help out my father-in-law with projects on the cabin that he has been building (almost all by himself) on the north shore of Lake Superior. There are no inspections, code review issues, design approvals, etc. You come up with solutions to problems, you do what you think is right, and that's that. No waiting for someone who often knows less than I do to come give us his OK.

   Edited 5/7/2009 10:49 pm ET by averagejoe