These stiff boards are placed close together on top of the floor joists.
Insulating pier and beam floor.
Cons of pier and beam foundations.
An uninsulated floor allows heat to escape making the house less energy efficient.
There s also an extra bit of insulation from the air under the home saving you on energy costs.
Homes built on pier and beam foundations can be relocated if necessary.
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.
Lots of people asking if they could use this in the walls and ceiling.
Some homeowners prefer the feel of the wood platform over a concrete floor.
Adding insulation mitigates the problem but there are some considerations to keep in mind.
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.
The air space above the 9 1 2 inch insulation in the 12 inch joist cavity will help provide a warm floor inside the cabin.
Pier and beam foundation homes in wetter climates may opt for this choice because foam insulation is typically resistant to mold.
It will provide additional insulating value for not too much more than what would be invested in the r30 insulation.
Alternatively you could fill the cavity completely using r 38 faced batt insulation.