Crawl Space Insulation

Reply

  #1  
Old 02-20-04, 01:03 PM
rkc
Visiting Guest
Posts: n/a
Question Crawl Space Insulation

My house sits about 18 to 24-inches above grade with concrete foundation at grade. I can get to space below house. I've seen recommendations to apply rigid insulation to perimeter walls between grade and floor structure. However, the perimeter walls have a series of 6 x 12 screened vent openings. Does this mean that another insulation method is required, as I assume I want to retain these vents?
 
Sponsored Links
  #2  
Old 02-21-04, 11:16 AM
Ed Imeduc's Avatar
Member
Join Date: Aug 2002
Location: Mountain Williams Missouri
Posts: 18,389
We block all vents in there . You need a 4 or 6 mil poly on the ground over lap it 2' tape the seams up the wall also . A 2 or 3" polystyrene on the wall up to the joist. In the joist space up there on the sill plate put a block of R19 insulation in it all around the home. if you have duct work down there put a register in it . ED
 
  #3  
Old 02-21-04, 03:58 PM
Member
Join Date: Jan 2003
Location: Indiana
Posts: 88
Ed,
Do you recommend getting a radon check done once a year since you suggest closing the crawlspace vents, and basically sealing it up? I remember the radon bandwagon being jumped on some years ago (I think the latest one now is mold).

Another question is humidity levels in the crawlspace - what is acceptable? I'm currently running between 45-55% now.

Thanks!
Jeff
 
  #4  
Old 02-21-04, 04:25 PM
Ed Imeduc's Avatar
Member
Join Date: Aug 2002
Location: Mountain Williams Missouri
Posts: 18,389
NotMrWizard Boy that on radon check Im staying out of. On www dont see a lot about it anymore. I know some say put a pipe in under the poly on the ground and vent it to the out side tape real good where it comes out of the poly and others say ok with that 2' lap seam and tape on the poly. When you have ducts down there we put in 2 heat outlets off the duct and one return. this should get the mold out . But yes mold is the big thing now.

Go to www.aboutsavingheat.com/crawlspace.html

read it, its good dont like the foil back insulation there . ED
 
Reply

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Thread Tools
Search this Thread
Display Modes