Insulated Concrete Forms (ICFs) offer an embedded furring strip every 8” on center.
As wooden shingles will require an air space, here is a good option for fastening to an ICF wall:
- Strap vertically with pressure treated 1×3 strapping.
- Strap again with 1×3, this time horizontally, with the horizontal spacing lining up with the nailing area on the single.
- Fasten the shingles to the strapping.
Please note that you should always refer to the shingle manufacturer for the specific recommended installation.