Instructions / Assembly

Mortairvent
Apply a weather resistant barrier over sidewall sheathing. Note: some regions may require two
layers of weather resistant barrier. Check local codes for more information.
Install Mortairvent® after windows and doors have been properly installed and flashed
Starting at the base of the wall, unroll Mortairvent® from right to left with the fabric flap on the
bottom. The blue geomatrix should be facing the weather resistant barrier and the filter fabric
facing the exterior of the building.
Staple or nail every three square feet.
On the bottom and top course only, fold the fabric flap and tuck it between the (blue) polymer
matrix and the weather resistant barrier to create an insect screen. The top course roll will need
to be inverted to achieve this.
On subsequent courses, butt the blue polymer material together without overlapping. Pull the
fabric flap over the previous course (shingle style) and staple.
Apply lath, scratch coat, and stucco or masonry veneer siding over Mortairvent® using
recommended fasteners and spacing.
CedAir-Mat
Install plywood roof sheathing onto rafters. Install roofing felt or ice dam protection membrane
over sheathing. Check local codes and manufacturer’s recommendations for specific
requirements.
Install CedAir-Mat® over roofing felt, ice protection membrane, and metal edge flashing or drip
edge. Ensure CedAir-Mat® material is installed flush against edge of the flashing or drip edge.
Carefully trim the CedAir-Mat® material at all penetrations with a utility knife or scissors.
When installing cedar or alternate material shingles, unroll CedAir-Mat® horizontally just ahead
of the shingles as they are installed. Tack or nail CedAir-Mat® in place every three square feet.
Do not overlap the CedAir-Mat® material. Butt each course tightly against the previous course
and at vertical seams.
At ridge locations, extend CedAir-Mat® material over the ridge and butt against the material on
the opposite side of the roof. If a ridge vent is utilized, follow the ridge vent manufacturer’s
recommendations for underlayment material installation.
Apply roofing materials using manufacturer’s recommended fasteners and instructions, allowing
for the additional 3/8″ thickness of the CedAir-Mat® material.

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