Instructions / Assembly

ManualsBrandsOwens Corning ManualsBuilding materialsVentSure 15 in. x 1 in. x 4 ft. Inflow Vent in Black 10 pieces per carton

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

Installing Initial Courses of Shingles & Underlayment

Step 1: Starting at the eave’s edge and continuing up two courses

beyond the exterior wall beneath the roof, install shingles and

underlayment per manufacturer’s instructions. Nail the second

course of shingles 4 1/2" above the lower edge of this same shingle

course.

See Figure 1.

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

• Starter and Roong Shingles

The following instructions are for installing the VentSure

InFlow

Vent up the

roof slope beyond the eave, where eave application is not possible or will not

allow proper intake ventilation into the attic space.

Important Note – Please review the following instructions thoroughly

before beginning your installation.

foot

STRIP

INFLOW

VENT

VENTSURE

OWENS CORNING ROOFING AND ASPHALT, LLC

ONE OWENS CORNING PARKWAY

TOLEDO, OHIO 43659

Pub. No. 10018103-C

Cutting the 1 1/2" Vent Slot Opening

Step 2: Chalk a line from rake edge to rake edge that is 5" above

the lower edge of the last course of shingles installed.

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 2.

Installing the Vent

Step 6: Position the first InFlow

Vent flush with the rake edge,

aligning the vent so the alignment notch is even with the lower edge

of the last shingle course installed.

See Figure 4.

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 3.

Step 5: Using a circular saw with the depth set to the thickness of

the roofing materials plus the roof deck, cut and remove all materials

from the area identified 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.

Figure 4

Step 7: Using the nails provided, hand-nail the InFlow

Vent 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 9. 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 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 8: Once the InFlow

Vent is installed, install underlayment and

hand nail starter shingles and one course of roofing shingles on top of

the vent using the 3" nails provided. IMPORTANT: Do not cover

the InFlow

Vent’s top intake openings. This will allow air

intake through the top of the vent.

Note: Ensure all nails fully penetrate the wood deck and do not fall

within the vent slot opening. Consult your shingle manufacturer for

recommendations if needed.

See Figures 6 & 7.

Figure 7

Figure 3

Figure 6

Figure 2

Figure 5

Typical “Mid-Roof” InFlow

Vent Application

Exposed Rafters or Open Softs

Typical “Mid-Roof” InFlow

Vent Application

Conditioned Living Area to Unconditioned Porch

Figure 1

Gable endwall

location below

Nail last course

4 1/2" above this

shingle’s lower edge

Underlayment

Eave edge

Exterior wallGable end wall

Eave

overhang

below

Two full

courses

above eave

overhang

Underlayment

Hand nail shingle

on top of vent

Hand nail starter

Gable endwall

location below

6" minimum

inside gable

end wall

min.

1 1/2"

Vent slot

opening

5" Lower edge

of shingle

to bottom

of slot

4 1/2" Lower edge

to shingle nail

Rake

overhang

Gable

end

wall

24"

24" min. from valley

1 1/2" slot

Cut & remove

material

Last course of shingles

(Step #1)

Last shingle installed

(Step #1)

InFlow

Vent

Lower edge

of last

shingle

course

Vent

alignment

notch

Lower

edge of

last course

of shingles

1 1/2"

Vent slot

bottom

of slot

4 1/2"

To last

shingle nail

1 1/2"

Vent slot

opening

Factory edge

Factory

edge

Install underlayment,

hand nail starter and

shingles on top of vent

Note:

For mid-roof,

do NOT cover

top intake

opening.

3" Nails provided

for shingle

over vent

3" Hand

nail

starter

AIR

Cut edge

InFlow

Vent

InFlow

Vent

top intake

Underlayment

Hand nail shingle

on top of vent

Hand nail starter

InFlow

Vent

top intake

Installation Instructions for

Mid-Roof Application

(See separate sheet for Eave Application)

Underlayment

1 1/2" Vent slot

Underlayment

1 1/2" Vent slot

www.owenscorning.com

1-800-GET-PINK

(1-800-438-7465)

(Exhaust ventilation)

Mid-Roof

InFlow

Vent

Mid-Roof

InFlow

Vent