You are all very close. Most ( not all) of the Roxul products are made from
lava rock. The rock is heated to an incredible temperature and the filaments
are spun into mats or bats ( not sure of the correct word) .The stuff is
mainly used as fire proofing material and has outstanding acoustic
suppression properties. Best of all as mentioned is that you can handle it
with your bare hands.

Claude in Canada

"G Mulcaster" wrote in message
...
On Sun, 04 Feb 2007 12:35:41 -0500, LayPerson Tom
wrote:

Hello,

I was wondering if any "Holms On Homes" fans can fill me in on this.
There is a brown/beige batts of insulation that he uses now and then.
I noticed he uses no gloves, mask, or glasses. I doesn't appear like
fiberglass, and I'm curious, what is it?

I've been using it. It's made from rocks (so the Roxul sales rep at
Home depot said). It is fire proof and it repels water.

I'm very sensitive to fiberglass insulation, so Roxul is a blessing
for me. It's a bit more expensive than fiberglass; however, it has a
higher R value (R14 as opposed to R12 for fiberglass).

It is quite heavy, but stays in place when doing a ceiling.

A bread knife is used for cutting. Or you can by a Roxul specific
knife for about $5.00. It is very sharp - have to be careful.

The instructions state a mask should be used.

As a home remodeller I'm very pleased with it.

Regards, Gary