Insulation Mystery - Insulation - DIY Chatroom Home Improvement Forum

Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Insulation


Thread Tools Display Modes
Old 09-26-2012, 07:36 PM   #1
Join Date: Dec 2011
Location: Wisconsin
Posts: 272
Rewards Points: 208

Insulation Mystery

in my 1950s garage is a section of wall with what looks like insulation behind cardboard. i can't figure out why the previous owner did that. is this insulation just toxic or something? what precaution should i take while removing it?

Uploaded with

Uploaded with


Scully is offline   Reply With Quote
Old 09-26-2012, 07:58 PM   #2
Civil Engineer
Join Date: Mar 2009
Location: Boston
Posts: 5,688
Rewards Points: 4,956

Exactly what is it you can't figure out? The owner may have decided to insulate the garage the lowest cost way he could figure out, and maybe decided the cardboard would help hold the insulation in place. Or maybe he liked the look of cardboard. Regardless, that looks like it may be conventional fiberglass, but if you are concerned about toxicity, you can always get it tested.


Daniel Holzman is offline   Reply With Quote
Old 09-26-2012, 08:11 PM   #3
Join Date: Nov 2011
Location: Hartfield VA
Posts: 34,590
Rewards Points: 14,312

Under sized insulation and cardboard, oh goody.
Looks like fiberglass to me to. It all needs to go to the trash. It should have been R13 and be covered with 5/8 drywall.
Insulating just the walls will do little good. Really need to also insulated the ceiling joint not the rafters like they did.
joecaption is offline   Reply With Quote
Old 09-26-2012, 10:25 PM   #4
GBrackins's Avatar
Join Date: Apr 2012
Location: Fairhaven, Massachusetts
Posts: 2,915
Rewards Points: 2,108

back in the 50's in some parts of the country it was standard practice to install cardboard. I'm guessing it was an attempt at air sealing and to help hold the insulation in place, especially blown in cellulose. polyethylene sheeting was not common, nor were all of our more modern materials.

I actually have it in my home in the attic that separates dormer walls from the unconditioned attic space. the cardboard is lapped and secured on all four sides to the wall framing.

"You get what you pay for, and sometimes free costs more!"
GBrackins is offline   Reply With Quote

Thread Tools
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
Existing blow in insulation vs new insulation - Keep or redo? Jaxx Insulation 9 01-17-2014 08:26 AM
Insulating your attic Bob Mariani How To Guides 5 07-07-2013 08:49 PM
Several Insulation Quotes, Big Decisions to make knotquiteawake Insulation 2 05-04-2012 11:16 AM
Garage Insulation yamster Insulation 0 07-01-2011 01:30 PM
Rafter Vents and Insulation nofx1981 Roofing/Siding 15 03-10-2010 08:14 PM

Top of Page | View New Posts


Search Engine Friendly URLs by vBSEO 3.6.1