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Note:
Install with continuous soffit ventilation at each eave equivalent to
9 sq. in. per linear foot.
Installs on pitches 3/12 to 18/12. For pitches greater than 12/12, refer
to
page 5.
Use Roll Vent Standard (10
1/2") for 12" three-tab shingles. Use Roll Vent Metric (11 1/2")
for metric shingles approximately 13" wide. If installing on dimensional
or architectural shingles on new construction, leave felt underlayment
about 6" long at roof ridge and fold back under the vent so that
vent is essentially installed on top of felt over the shingles. If re-roofing,
caulk between low areas of shingle and baffle of vent after installation.
Cut a slot 3 5/8" wide in roof deck at ridge. Allow for a closed
area of sheathing with no slot 6" at both ends of ridge.
Start Roll Vent a minimum of 1" from each end of roof. Install ridge
cap shingles with even spacing on both sides of Roll Vent using 2 1/2"
nails provided. Nail approximately 2 1/2" in from cap shingle edge
on nailing rib indicated by nailing line. Nails should penetrate into
the sheathing 3/4" or completely through the sheathing. Ridge cap
shingles must overhang Roll Vent by 1" at each gable end. Ridge cap
shingles should overhang Roll Vent by 1/4" minimum to 3/4" maximum
on each side.
- Snap chalk line
and cut slot 3 1/2" wide (1 3/4" on each side of ridge beam).
Allow for a closed area of sheathing 18" at both ends of the ridge.
- No end cap is necessary
if ridge cap shingles are lapped over end of product and down onto ridge.
In this case, run vent to 12" from the gable ends. Cap shingles
can be laid down over end of vent onto ridge and out to gable ends.
Optionally, Roll Vent can be installed right to gable ends using an
integral end cap. To create end cap, loosen about 6" of matrix
from fabric and cut out with snips. Fold bottom fabric in toward center
of product so that it covers the end of vent. Start and end vent installation
1" from gable ends.
- Center vent over
slot at one end with nail lines “up” and fasten with two
nails (note: minimum nail length is 2 1/2"). Roll out along entire
ridge, pull out slack, and fasten with two nails at opposite end (creating
end cap at other end if using that method). Center ridge cap shingles
over vent and install with 2 1/2" nails provided. Use nail line
as placement guide. If using fabric end cap, hang shingles 1" over
vent at gable ends. Nails must penetrate 3/4" into sheathing or
completely through the sheathing.
- To splice, remove
about 3" of nylon matrix from fabric and lay end of new roll inside
remaining fabric to create fabric overlap.
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