Instructions / Assembly

Cutting the 1 1/2" Vent Slot Opening
Step 1: Install drip edge along the eave per local code requirements.
Step 2: Chalk a line from rake edge to rake edge that is 6 1/2" above the
lower edge of the drip edge or eave edge.
Step 3: Chalk an additional line, 1 1/2" above this line. These lines will
identify the top and bottom edges of the vent slot opening.
Step 4: Make marks on the roof 6" in from the gable end wall at each rake
edge. The marks will identify the ends of the vent slot opening.
See Figure 1.
Cutting the 1 1/2" Vent Slot Opening (Continued)
Note: The vent slot opening must stop 6" from chimneys, end walls, vertical
walls, or other obstructions, and a minimum of 24" from roof valleys.
See Figure 2.
Step 5:
Using a circular saw with the depth set to the thickness of the roof deck,
cut and remove all materials from the area identied for the vent slot opening.
Note: To provide full ventilation, be sure to maintain at least 1" of clearance
between the attic insulation and the bottom of the roof deck.
Installing the Vent
Step 7: Position the first
InFlow
®
Vent
flush with the rake edge, aligning
the vent so the alignment notch is even with the eave edge. This will ensure
the vent overhangs the eave edge by 1", allowing air intake through the
bottom of the
InFlow
®
Vent
.
See Figure 4.
Installing Underlayment beneath the
InFlow
®
Vent
Step 6: Install a minimum 18" wide piece of underlayment starting at the
eave edge. This will cover the slot opening and protect the roof deck below
the vent. Identify where the slot opening is underneath the underlayment
and cut out the 1 1/2" slot using a sharp utility knife.
See Figure 3.
Step 8: Using the nails provided, hand-nail
InFlow
®
Vent
s in place using the
built-in nail holes. Continue installing vents flush with each other from rake
edge to rake edge. When installing the final vent, cut the non-rake edge of
the vent (if necessary), to ensure a factory-finished edge is flush with the
rake edge.
See Figure 5.
Step 11: Hand nail the starter and roofing shingles on top of the vent using
the 3" nails provided. See Figures 6 and 7.
Note: Be sure that all nails fully penetrate the wood deck and do not fall
within the vent slot opening. Consult your shingle manufacturer for
recommendations as required.
Step 12.
Continue shingle system installation per manufacturer’s specifications.
Note: A nail gun and standard roofing nails can be used to install shingle
courses above the
InFlow
®
Vent
, per shingle manufacturer’s specification.
For installation conditions which are not addressed by these instructions,
please contact us at 1-800-GET-PINK
®
(1-800-438-7465) or visit
www.owenscorning.com for further instructions.
Installing Remaining Shingles & Underlayment
Step 9:
Once the InFlow
®
Vents are installed across the roof, install an
underlayment or WeatherLock
®
Ice & Water Barrier over all vents, at
the eave, and at the rake edges per local code requirements. Ensure the
bottom edge of the underlayment is flush with the lip at the lower edge
of the vent, completely covering the top intake openings.
IMPORTANT: The InFlow
®
Vent ’s top intake openings must be
completely covered, as air intake occurs through the bottom of the vent
with an eave install.
See Figure 6 and 7.
Note: In cold climates where code requires the use of an ice and water
barrier, it must extend 24" above the exterior wall. It may be necessary to
install a second course of an ice and water barrier to meet this code
requirement.
Step 10. Finish installing an approved underlayment over the entire roof,
per shingle manufacturer’s instructions. Once the underlayment is in place,
install rake edge metal over the entire rake, including the
InFlow
®
Vent .
Note: Rake edge metal with a 1 1/4" minimum vertical leg will completely
conceal the factory-finished edge of the
InFlow
®
Vent .
4
foot
STRIP
INFLOW
®
VENT
VENTSURE
®
Installation Instructions for
Eave Application
(See separate sheet for Mid-Roof Application)
The following instructions are to be used when installing the VentSure
®
InFlow
®
Vent
at the eave of the roof.
Important Note – Please review the following instructions thoroughly
before beginning your installation.
Typical “Eave” InFlow
®
Vent Application
Primary Intake on “Cape Cod” or
Other “Soft-less” Homes
Typical “Eave” InFlow
®
Vent Application
Supplemental Intake on Soft Homes which are
Under-ventilated or where Intake is Blocked
OWENS CORNING ROOFING AND ASPHALT, LLC
ONE OWENS CORNING PARKWAY
TOLEDO, OHIO 43659
Copyright © 2014 Owens Corning. All Rights Reserved.
Pub. No. 10018103-C
Figure 1
Figure 4Figure 2
6"
min.
6"
min.
1 1/2"
Vent slot
opening
6 1/2" From drip edge
or eave edge
Rake
overhang
Gable
end
wall
6"
24" 24" min. from valley
1 1/2" slot
18" Minimum
underlayment beneath vent
InFlow
®
Vent
1" Overhang
Vent
alignment
notch
Drip edge
Figure 6
Underlayment over the vent
as code requires
InFlow
®
Vent
Figure 5
Underlayment
Hand nail shingle
on top of vent
Hand nail starter
Factory edge
Factory
edge
Cut edge
Cover the
InFlow
®
Vent
top intake
Underlayment
Hand nail shingle
on top of vent
Hand nail starter
Cover the
InFlow
®
Vent
top intake
Drip edge below
Underlayment
1 1/2" Vent slot
Underlayment
1 1/2" Vent slot
Figure 7
1 1/2"
Vent slot
6 1/2"
Eave edge
to bottom
of slot
Drip edge
6
" minimum
inside gable
end wall
Cut & remove
material
6" minimum
inside gable
end wall
Cut & remove
material
Figure 3
1 1/2"
Vent slot
Minimum
18"
underlayment
Drip edge
Cut & remove
material
Cut & remove
material
Add
InFlow
®
Vent
(Exhaust ventilation)
Precautionary Notes:
Before installing this product, check local building codes for their
roong and ventilation requirements. This vent is designed for new or
re-roong work over any properly built and supported wood roof
deck having adequate nail-holding capacity and a clean, smooth surface.
The InFlow
®
Vent is designed for roof slopes 4:12 or greater. The
manufacturer will not be responsible for issues resulting from any
deviation from the recommended application instructions and the
following precautions:
Roof Deck
• Maximum 6" width and 25/32" minimum thickness wood sheathing
• Minimum 3/8" plywood sheathing or 7/16" OSB
• Sheathing spaced minimum 1/8" and decking spaced maximum 1/4"
• Check local building codes or decking recommended by APA
Ventilation
• Must comply with local building code requirements.
Fasteners
• The InFlow
®
Vent is packaged with 3" ring shank nails to be used
when installing the vent and any roong materials installed directly
on the vent.
• Follow roof covering manufacturer's guidelines and local code
requirements for all other fasteners.
Tools and materials required to install a
VentSure
®
InFlow
®
Vent:
• Utility knife • Tape measure
• Circular saw • Hammer
• 3" Hand Nails (provided with the vent) • Chalk line
• Underlayment/self-adhering membrane • Drip edge
(for eave)
• Starter and Roong Shingles
• Rake edge metal (minimum 1 1/4" vertical leg)
(Exhaust ventilation)
Add
InFlow
®
Vent
Add
InFlow
®
Vent
Add
InFlow
®
Vent
A
I
R
AIR
AIR
3" Handnails provided
for starter and shingles
over vent
www.owenscorning.com
1-800-GET-PINK
®
(1-800-438-7465)
Drip edge