_firstname_@lr _dot_ los-gatos _dot_ca.us wrote in message
news:1073545970.443042@smirk...
I'm looking for a lightweight cover material for ceiling insulation
between joists. In detail: Imagine having a basement. The ceiling of
the basement is the floor joists of the ground floor; there is
fiberglas insulation stuffed between the joists.
...snip...

You mentioned in your own post. Tyvek is used for this. It comes in large
rolls (8 feet) available at any building supply store. You can staple it
with the lettering side up so that you get a white ceiling. Typar (similar
to Tyvek) would work but it is grey colored.

If you can't find that, you can try Remay, which is a lightweight spun
polyester that is used to cover crops and gardens to protect from insects.
It is all white, no lettering and available from farm supply shops. Garden
shops usually have it, but it is more expensive and usually narrower widths
(3 feet).

-al sung
Rapid Realm Technology, Inc.
Hopkinton, MA