Post #9242

More discussion about ICF. The only concern with ICF is termites. They can tunnel thru the foam to your roof structure and you'd never know it. The house I'm in is slab on grade and what we did was pour the slab 8feet wider on each side of the house and put up a cinder block knee wall to support a wrap around porch. This means the ICF blocks are not sitting in the earth, but rather on the slab. Another method would be to build a 12" wide stem wall a little out of the earth and then build the ICF wall on top of that. As long as it all locks together with rebar and is poured full of concrete, all is well.