Attaching exterior siding
Commonly used methods
Method 1: Attach furring strips first, then siding to the strips
Method 2: Attach siding directly to form's fastening surfaces
Rick Hansen - Reddi-Form Northwest
Check the Wood Products Council's recommendations to use furring strips under siding and over any substrate in order to gain several times the normal life of both siding and stain/paint. The strips can be attached to the plastic attachment strips in the icf with mechanical fasteners and with adhesive.