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: 1923

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

David Eakin replied to Kaushal Bharath Raju's discussion Affordability & Deep Energy Upgrade/Passive House Retrofit in Berkeley, California.
"I mis-spoke - I was referring to the Midori House in Santa Cruz. Have an in-depth discussion with…"
4 hours ago
Profile IconScot Davidson, j jarvella and Michael joined Home Energy Pros
10 hours ago
Kaushal Bharath Raju replied to Kaushal Bharath Raju's discussion Affordability & Deep Energy Upgrade/Passive House Retrofit in Berkeley, California.
"Hi David & Bud, $400/sqf > $300 sqf. The latter is the minimum cost of new construction in…"
11 hours ago
David Eakin replied to Kaushal Bharath Raju's discussion Affordability & Deep Energy Upgrade/Passive House Retrofit in Berkeley, California.
"Kaushal, There was a deep energy retrofit upgrade project (to Passive House standards) in San Jose…"
13 hours ago
Kim Tanner updated an event

Beyond Residential Testing at The Energy Conservatory

May 14, 2014 to May 16, 2014
The Energy Conservatory (TEC) is hosting a Beyond Residential Testing event. In addition we are…See More
15 hours ago
Casey Gesell posted a video

Super Attic - Attic Insulation System

http://www.drenergysaver.com | 1-888-225-6260 The new Super Attic: Advanced Conversion System -- converts your attic from a vented attic into an unvented at...
16 hours ago

Casey Gesell just added their location.
(via Member Map)

17 hours ago
H.O. Electric posted a video

H.O. Services, Generator, Electrical, Plumbing, Heating, Cooling, Belmont, Lexington, Arlington, MA

H.O. Services is your residential Electric-Plumbing-Heating-Cooling Specialist. We are an electrical contracting company providing homeowners the best Electr...
18 hours ago
Jim Gunshinan's blog post was featured
18 hours ago
Luis Hernandez posted a discussion

Air Source Heat pump or mini-split efficiency

Greetings everyone!    I have a technical questions I hope I could get some feedback! I understood…See More
20 hours ago
Jim Gunshinan posted blog posts
yesterday
H.O. Electric posted a photo

about us-team

H.O. Services is your residential Electric-Plumbing-Heating-Cooling Specialist. We are an…
yesterday

© 2014   Created by Lawrence Berkeley National Laboratory.

Badges  |  Report an Issue  |  Terms of Service