Support Styrofoam Insulation Between Floor Joists

Buy more than you think you will need to be on the safe side.

Support styrofoam insulation between floor joists. You can insulate second floor rim joists following the same steps shown here if you happen to tear out a ceiling during remodeling. When the basement or crawl space has vents installed insulating joist bays. We chose 2 in thick r 10 extruded polystyrene don t use expanded polystyrene which is a less effective air and moisture barrier. Step 3 prep the foam board.

Alternatively battens can be secured to the underside of the. Unlike fiberglass rigid foam insulation does not absorb water support mold or allow air to pass through providing that joints between boards are sealed with tape. This wire is easy to install simply push it into place making it great for hard to reach places like crawl spaces. Joist bays the open spaces between floor joists are prime hosts for insulation under specific circumstances.

Rigid foam is the best insulation for rim joists. Thermo jute is flexible enough to be packed tightly between the joists. Instead of installing the foam insulation between floor joists in the crawl space the foam board is installed against the crawl space foundation walls. Theworks insulation support wire is intended for use with 16 on center joists or studs.

Thicker foam board will offer more support and insulation for the floors. The membrane is draped up and over the joists to create a cradle to support the insulation material and its integral reinforced netting ensures it provides sufficient strength to do this throughout the service life of the installation with no risk of sagging figure 9. If you have yet to get the foam board go ahead and buy it now.