We use “SIPS”. Structural insulated panels.
Each section has 1.5″ pressure treated lumber custom cut to fit flush all around the pie.
The top and bottom is OSB glued in place. The splines that connect the pieces are insulated splines.
Depending on where this home will be built, we have several recommended installation methods as well as thicknesses to meet the building code for that zone.
If your home is not in a high wind area you can (or our installers) set up your home on the same blocking used to install mobile homes
Another method of installation is concrete pier blocks. They spread the load and bolt to the floor
In these situations we recommend installation on top of screw pilings
Whichever method you decide to use get the floor installed.
We recommend that all your services (water, sewage, electricity have been trenched and installed in an insulated box under where they will penetrate the floor.