Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Building & Construction


Thread Tools Search this Thread Display Modes
Old 10-05-2008, 06:57 PM   #1
Join Date: Oct 2008
Posts: 2
Share |

Need help identifying this insulation

I recently purchased an older home (built in 1965) and I'm getting ready to add more insulation to the attic since there's barely 3 inches of fiberglass insulation up there. There are also sheets (maybe 4 feet by 4 1/2 feet in size by 2 inches thick) on top of the beams that I'm trying to figure out if they contain asbestos. I can't find any identifying writing on them. The sheets are made up of 3 layers, the top layer is some sort of heavy black paper like material, the middle layer appears to be a foam and the bottom layer I'm not sure about. It sort of looks like a compressed cellulose material but I don't know. I'd just like to know there's no asbestos in this stuff before I go moving them around any more than I already have. I may end up having the stuff tested but though I'd see if anyone could make a positive ID first. Check out the pictures below.


barmato is offline   Reply With Quote
Old 10-08-2008, 11:52 AM   #2
Mold!! Let's kill it!
Join Date: Feb 2008
Location: Central Pennsylvania
Posts: 2,843

Need help identifying this insulation

What you have is combination ISO board insulation. It is an iso-cyanurate panel laminated to a fiber board. It is used under built up asphalt roofs, either hot or cold applied. The black tarpaper side is adhered to the roof deck with either hot asphalt or mastic. The base ply is adhered or hot mopped to the fiber board. I doubt this material would have any asbestos. Somebody must have gotten a hold of some left overs from a roof project. You can figure about R-8 per inch of thickness of the ISO.

Maintenance 6 is offline   Reply With Quote
Old 10-08-2008, 12:06 PM   #3
Join Date: Oct 2008
Posts: 2

Need help identifying this insulation

Ok, thanks for the reply. It is somewhat of a relief to know what that stuff is. I am still having it tested to be sure but it'll be a couple of weeks before I have the results.

barmato is offline   Reply With Quote

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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

Similar Threads
Thread Thread Starter Forum Replies Last Post
Cape Cod Style House Attic/Crawl Space Insulation Help Danielg Insulation 24 05-21-2012 08:20 AM
Insulation over Attic Walkway BigJimmy Building & Construction 4 06-23-2008 02:13 AM
attic insulation question dderolph Building & Construction 10 11-03-2007 05:21 PM
Rigid insulation question Endeavor General DIY Discussions 2 07-17-2007 10:27 AM
Installing new insulation in my basement and removing the old moldy insulation. Fixitgeorge Remodeling 3 10-17-2006 08:33 PM

Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.