</font><font color="blue" class="small">( Sounds like the block cavities will generally be empty??? Seems it would be nice to fill it all in. We don't use blocks here, just formed stem walls. Anybody know why? With the blocks, a guy could use them as handy forms for the poured mud. We are seeing more ICF jobs than blocks. )</font>
The block cavities are all filled, but only the top 6" for the ones holding the sill plate bolts.
I haven't seen any ICF jobs in this area of Florida..... probably because most of the homes are built on slabs, and a few like mine are on crawl spaces.