Insulation Identification

[fqp25]

I've never seen this before, it was all over this attic (the brown stuff). Some under newer fiberglass. The house is early 1950's.

Thanks,

Frank

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[hausdok]

Hi,

It's paper (cellulose). Used in the 40's into the mid-50's. Think party streamers 16 inches wide, treated so they won't burn and in multi-layers.

ONE TEAM - ONE FIGHT!!!

Mike

[Jim Katen]

Kimsul.

Jim Katen

[Les]

both are right. mostly produced from inner layer of bark(s) and kelp.

[Rob Amaral]

Jim's right (as usual..) Kimsul... See it a lot.

[AHI in AR]

As said, it's Kimsul, made of paper by Kimberly Clark from the 30's into the 50's. It was treated initially for fire retardancy, but whenever I have tested it, it burns readily. I advise getting rid of it.

Trivia: I found it a few times before I finally found a batt which had a legible label on it. In researching it, I found it was used in refrigerators, automobile dashes (for sound deadening) and Quonset huts during WWII.

[Rob Amaral]

OK... I had to bite. Anybody out there know why 'Quonset Huts" are called that?

[Bain]

From Wikipedia:

A Quonset hut is a lightweight prefabricated structure of corrugated steel having a semicircular cross section. The design was based on the Nissen hut developed by the British during World War I. The name comes from their site of first manufacture, Quonset Point, at the Davisville Naval Construction Battalion Center in Davisville (a village located within the town of North Kingstown, Rhode Island).