On Oct 16, 2:24*pm, "Ivan Vegvary" wrote:
"ransley" wrote in message

...
On Oct 15, 11:36 pm, "Ivan Vegvary" wrote:

Got my crawl space dug out so I can move around. Want to insulate w/ R19
bats. Joists are 2x6 approx. 24 inches on center. What's the best way to
hold up the insulation? Can't staple the flanges since they need to face
up
towards the heated surface. Can't use the "wire struts" since the 24" on
center is only approximate. (± 1/2 inch). Was considering cutting strips
of Mylar and stapling them to the studs under the insulation.

Any other thoughts????

Thanks!!!

Ivan Vegvary

The flange is stapled and at the bottom you keeping moisture from
entering, dont think everybody has beeen doing it wrong on millions of
houses for decades.

Thanks Ransley,
This is in a crawspace between the first floor and earth. *I would love to
simply staple the flanges BUT have been told the 'paper' always goes up
toward the conditioned (heated living space) side of the space. *What gives?
Can I install it "paper down"?

Thanks,

Ivan Vegvary

In the attic heat rises so does moisture, in a damp crawl moisture and
cold incomming air rises to your inside. Ive seen quite alot of crawl
spaces and open buildings where it was done this way with no issues,
and mine maybe 80 years ago, but crawl spaces were dry, its the only
easy logical way to do it, and the paper down keeps air from going up
through easily. Read about how fiberglass looses efectivness at very
cold temps, paper down could help that issue. The Attic issue is to
keep attic wood dry so you dont mold then rot your roof away in a few
years with tight attics. Celulose and unfaced insulation without vapor
barrier are used all the time in attics. Staple it and be done, but
foam is really best if you have the $