Name that insulation

This is a new form of insulation I've not seen before, clinging under the attic rafters of a 1902 home in Berkeley, Calif. Can you name the bird or other critter that's developed this unique form of insulation? The white lines are plaster "keys" poking through the lathe between the ceiling joists.

Comment

You need to be a member of Home Energy Pros to add comments!

Join Home Energy Pros

Comment by Chris Heenan on December 1, 2011 at 4:26pm

this one is creating a buzz

Comment by Guy DuBois on August 20, 2011 at 8:07am
I dare you to poke it with a stick!
Comment by hollis micklon on July 6, 2011 at 6:58am
I recently removed honeycomb with honey in it-20 lbs-have pictures too!
Comment by Bruce A. Bailey on June 30, 2011 at 8:17am
I agree with Ed. Looks like an old Hornets nest.
Comment by Barry Zeeuw on June 27, 2011 at 11:41am
Is Berkeley anywhere near the Mission of San Juan Capistrano?
Comment by George Kopf on June 20, 2011 at 10:28am
What are the dimensions (roughly)?
Comment by Ed Ballard on June 9, 2011 at 5:28pm
Looks like a hornet's nest to me.

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

John Proctor commented on Kurt Shafer's blog post What is your opinion about members promoting products here?
"Kurt: So my question is how does your device work? PSC motors generally do not reduce their…"
2 hours ago
John Proctor commented on Christopher Morin's blog post How do You Test a TXV?
"Correction 32 is the melting point, not the saturation temperature."
2 hours ago
Richard Beyer replied to Mike Kandel's discussion Our Homes Suck – And That's Why Our Kids Have Sinus Problems
""I have no interest in bantering or arguing with you." AGREED! I look at these…"
4 hours ago
tedkidd replied to Mike Kandel's discussion Our Homes Suck – And That's Why Our Kids Have Sinus Problems
"Todd, it appears Richard is more about getting the last word than about learning a new thing.…"
5 hours ago
Todd Collins replied to Mike Kandel's discussion Our Homes Suck – And That's Why Our Kids Have Sinus Problems
"Richard,  I don't believe I am missing any points.  As I mentioned... I have no…"
5 hours ago
Richard Beyer replied to Mike Kandel's discussion Our Homes Suck – And That's Why Our Kids Have Sinus Problems
"Todd, Your missing the point. I can only suggest for you to read all the links attached within that…"
5 hours ago
Tom Conlon replied to Tom Conlon's discussion Whole House Fans - Love 'Em or Not?
"Excellent snapshot, Griffin. You didn't happen to notice the fan manufacturer's name on…"
6 hours ago
Brandon Walton replied to Brandon Walton's discussion 12 Things Every Home Performance Contractor Should Have on Their Work Truck
"Thanks Don! "
8 hours ago
Griffin Hagle replied to Tom Conlon's discussion Whole House Fans - Love 'Em or Not?
"I was aware of but unfamiliar with them until moving to Southern California in 2012. After seeing…"
11 hours ago
tedkidd commented on Scott Mellberg's blog post Lessons from Energy Efficiency Advisors: Getting Homeowners Onboard with Home Performance
"David,  I don't think forcing people to do things works out well for anyone.  Any…"
12 hours ago
David Eakin commented on Scott Mellberg's blog post Lessons from Energy Efficiency Advisors: Getting Homeowners Onboard with Home Performance
""I believe it is our job to educate the consumer, understand the problems, help them…"
13 hours ago
Profile IconGary Fitzgerald, LOUIS ANDERSON and Jeremy Hargreaves joined Home Energy Pros
13 hours ago

© 2014   Created by Lawrence Berkeley National Laboratory.

Badges  |  Report an Issue  |  Terms of Service