Mikey Block method for building ICF walls dictates that window and door
openings be made in one foot increments. This way, all block cuts can
be made in incremental foot pieces, so when you cut a block, both
pieces can be used in the wall. Hence, there is no waste. It may seem
that incremental foot openings will limit the options for window and
door sizes, but our unique method of detailing doors and windows
handles this issue quite well. We offer foam bucks in 2", 3", 4", 5",
6", 8", 10" & 11" widths.
They are pre-notched for 2.5" track in the middle and on both sides, if
additional reinforcement is desired. All can be used in any combination
to buck openings down to any desired size. Another really nice feature
is that the bucks insulate and remain in place after grouting, so there
is no waste.