Roxul ComfortBoard IS User Manual

Page 42

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ROXUL

The Better Insulation™

Step 7: Back-caulk window. Apply sealant at
jambs and head; do not apply to sill to allow
for drainage. Or, caulk can be applied to
window nailing flange prior to installation.

Step 8: Install window plumb, level and

square per manufacturer’s instructions.

Step 9: Install jamb flashing; extend
minimum 1” above head nailing flange and a
minimum 3” below sill nailing flange.

Step 10: Install head flashing; extend
minimum 2” past edge of jamb flashing

Step 11: Fold housewrap down at head.
Ensure head flap has not been damaged
during the installation process.

Step 12: Apply corner patches at head;
extend minimum 1” beyond cut in
housewrap. Air seal window around entire
perimeter on the interior with sealant or non-
expanding foam.