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