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

Tom Mallard replied to Hal Skinner's discussion How much heat energy is lost through the floor of a house?
"For self-heating homes I'm using an insulation board under the joists to be able to use that…"
1 hour ago
Kevin Jordan shared a profile on Facebook
1 hour ago
Profile IconWhitney Cooper and Mike Burton joined allen p tanner's group
Thumbnail

Energy Auditing Equipment for Sale, Trade or to Purchase

Discuss the pros and cons of the equipment you are interested in prior to purchase. Post equipment…See More
1 hour ago
Kurt Shafer posted a discussion

Where can I find the best radiant barrier to install under my roof?

As home energy professionals, we all need to know the best way to prevent attics from overheating…See More
1 hour ago
Kurt Shafer posted a status
"What is the best radiant barrier for my roof built in 2000 in Temecula CA?"
1 hour ago
Profile IconSteve Mohler, Victor Couto, Melvin Calahan and 2 more joined Home Energy Pros
2 hours ago
Aaren Stewart posted a discussion

HVAC - Cooling and Heating Load Reduction

Common load reduction strategies include:      Tightening your building covering and adding…See More
5 hours ago
Kevin Jordan posted a photo
10 hours ago

© 2014   Created by Lawrence Berkeley National Laboratory.

Badges  |  Report an Issue  |  Terms of Service