Lots of people asking if they could use this in the walls and ceiling.
Insulating pier and beam floor.
A pier and beam home built on top of sturdy supports typically has an open crawl space between the floor of the house and the earth.
Cons of pier and beam foundations.
Alternatively you could fill the cavity completely using r 38 faced batt insulation.
An uninsulated floor allows heat to escape making the house less energy efficient.
Pier and beam foundation homes in wetter climates may opt for this choice because foam insulation is typically resistant to mold.
If you want to insulate a floor assembly by leaving the joist bays empty and installing rigid foam on the underside of the joists here are a few things to keep in mind.
These stiff boards are placed close together on top of the floor joists.
According to the 2012 irc the minimum r value for floor assemblies is r 13 in zones 1 and 2 r 19 in zones 3 and 4 r 30 in zones 5 and 6 and r 38 in zones 7 and 9.
Sharing my technique how i insulate my cabin floors and keep them rodent free.
If you would prefer to install the insulation without the help of a professional one option would be to use foam boards.
It will provide additional insulating value for not too much more than what would be invested in the r30 insulation.
Homes built on pier and beam foundations can be relocated if necessary.
Adding insulation mitigates the problem but there are some considerations to keep in mind.