06:56PM | 11/30/04
Member Since: 11/29/04
2 lifetime posts
Just bought a 40's ranch home, and found the attic to be loaded with 4" thick slabs of solid cork sitting between each and every joist! These things are not too light either. They are nearly 15" wide, and around 4' long each. I had never heard of using cork for insulation, and cannot seem to find any information about it. Does anyone have info about the use of cork for insulation, and what something like this is worth?

Thanks a bunch,


need more boost


05:10PM | 12/02/04
Member Since: 12/01/04
7 lifetime posts
Go to this site for more info

Corkboard was invented in 1892 mainly for the purpose of insulating cold storage areas in buildings and other locations requiring efficient insulation. It consists of various sizes of cork granules compressed together under a high temperature causing the granules to expand and giving them a dark brown color.

In past decades corkboard has also been used as a decorative item for walls and ceilings. It has the additional property of improving an area's insulation and sound proofing. We also have available a special grade of corkboard which is ideal for the manufacturing of decorative and hunting decoys.

DIMENSIONS: 36" x 24", 36" x 12", 18" x 12", 12" x 12"

THICKNESSES: 3/8" - 6".

DENSITY: 6 1/2-8, 8-8 1/2, 9-10, 11-12, 13-14, 15-16, 18-20 in Ibs/cu. ft.

USES: Insulation between walls, for roofs, floors, around pipes, decorative effect for walls and ceilings, and for many different gift items.

If you need ceiling insulation I can help.

Hope this helps, Kindest Regards Dan Biermann

e-mail me at with any questions



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