ICF Wall, Energy Heel, and Insulation
I’m in the process of building a house. We have ICF walls for basement and main floor. Trusses have 24″ tall energy heel.
Originally, I had asked my builder to make it such that the heels of the trusses would be able to be sheathed with foam that matches the thickness of the ICF foam (3.5″). However, now that they’re putting the trusses up, I see that the heel extends so it is flush with the exterior of the ICF foam.
So, besides being pissed, what can I do to rectify this situation? I’m not getting new trusses and they can’t really modify the ones that are up since they’re sheathed and all that.
Attached is an idea for a modification. Since we have a rain screen (5/8″ plywood strips), I’m thinking that we just add 5/8″ plywood to the heel and then fill in the spaces between the trusses with foam to match the thickness of the ICF foam. (first image shows condition as of today, second image shows intended condition, third image shows proposed mod)
GBA Detail Library
A collection of one thousand construction details organized by climate and house part