I'm pretty sure I've never seen this stuff before. It's installed in rafters as batts, held in place by cardboard sheets below. Papery consistency, now crumbling. The house is ~1923, but no idea when this was installed.

Anyone know what it might be? Thanks for any help here.

Views: 2248

Reply to This

Replies to This Discussion

Hi Brian,

Thanks for sharing the brochures.   The middle link shows a lot of detail.  I found their heat loss savings calulations really interesting but way off if they are considering a house with no insulation to maybe an R-11.   I would love to know how they did the math.  For maybe a small two story home the pre insulation Btu numbers are pretty accurate for a home in the mid west with 6000 HHD's/

That IS an interesting link Brian!  I've seen a straw version of that material: 

Hey Rem, 2,000,000,000 BTU annual load?  What "small house" are you thinking?  

Most houses I've seen have 500-1800 total therm usage (insulated or not) until you get to great big houses.  If you factor in all the efficiencies of combustion and distribution before you even get to enclosure load, you cut the fuel BTU carrying the load by what, 25-75%?  

IDK, I think the layer of insulation vs none can have surprising results.  Those saving seem like good faith numbers, particularly when there is no accountability for saving being delivered.  They certainly could have projected a lot higher.  Think about 1990's window claims of cutting energy bills in half!  

We need tracking of results, that'll bring accountability to this field.  Promises of savings without tracking, how is that supposed to work?  How are you supposed to know if your promises come true?  

Imagine, Home Performance could actually be a rare industry that consumers could count on GETTING what they're PROMISED if results were tracked.  (The Solar industry has this figured out, we need to.) 

i agree with the others that's it's old rock or mineral wool bats

RSS

Home Energy Pros

Home Energy Pros was founded by the developers of Home Energy Saver Pro (sponsored by the U.S. Department of Energy,) and brought to you in partnership with Home Energy magazine.

Latest Activity

tedkidd commented on Jim Gunshinan's blog post My Energy Upgrade California—The Numbers Are In
"Jim, I'm glad you are open, that's great!  We all learn best when we are open! The…"
54 seconds ago
David Eakin commented on Jim Gunshinan's blog post My Energy Upgrade California—The Numbers Are In
"Jim, Well, as the editor of Home Energy you should already know that the order of remediation is…"
1 minute ago
Greg Labbe posted a blog post

Technical Tape Desecration

Lets face it – building science is pushing the performance of adhesive tapes to a new levels and…See More
2 hours ago
Stacy Hunt posted an event

High Performance Enclosure Strategies: Part II, New Construction at Online

August 13, 2014 from 1pm to 2:30pm
Please join the Building America Program for our free webinar: High Performance Enclosure…See More
3 hours ago
Richard Beyer replied to Howard Katzman's discussion UV lights on filters
"Howard, There are numerous manufacturer's who swear these systems work and then you have the…"
12 hours ago
Christopher Morin posted a blog post

How do You Test a TXV?

  Thermostatic Expansion Valves (TEV or TXV), one of the most popular metering devices for…See More
15 hours ago
Howard Katzman posted a discussion

UV lights on filters

I recently saw UV bulb installations in 2 HVAC systems in a home. Each system had the Lennox…See More
18 hours ago
Don Fitchett joined Michael Stuart's group
Thumbnail

INFRARED THERMOGRAPHY USERS

This group is dedicated to knowledge sharing and discussion of infrared thermography for building…See More
18 hours ago
Don Fitchett commented on Diane Chojnowski's group Pinterest
"While most of our (BIN95.com) energy post and boards are industrial related, there are crossovers…"
18 hours ago
Don Fitchett joined Diane Chojnowski's group
Thumbnail

Pinterest

Do you have a Pinterest board for energy topics?Post the link to your Pinterest energy board in the…See More
18 hours ago
Profile IconJosh Guenther, Deborah Green, Kenneth Brooks and 3 more joined Home Energy Pros
19 hours ago
Jim Gunshinan commented on Jim Gunshinan's blog post My Energy Upgrade California—The Numbers Are In
"Hi David, to answer one question, the crawlspace was covered with thick poly and the seams were…"
19 hours ago

© 2014   Created by Lawrence Berkeley National Laboratory.

Badges  |  Report an Issue  |  Terms of Service