Lomanco IB-8 User Manual
OMANCO
®
8" Turbine Vent
Model IB-8 Installation Instructions
1
turbine turns freely. If necessary, minor
adjustment may be made by gently prying
lowest point of turbine upward to remove
any wobble.
4
shingles. Secure with nails at top, sides and
bottom.
Before installing, check to see that
Slide top half of flashing under
2
rafters and mark hole to be cut. Locate rafters
by tapping roof. 8" turbine base, model VP-8,
is sold separately.
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screws on the barrel; rotate and adjust until
the top sits in vertical and level position.
Locate base opening between
Set the base in position; loosen
Cut hole as marked. Seal around
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entire perimeter of hole with roofing cement.
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tighten as shown with screw, included with
8" turbine base, model VP-8.
Place locking clamp across seam and
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base/elbow connection seam on inside with
roofing cement. Seal locking clamp holes and
all exposed nails with roofing cement.
Seal the adjusting seam and the
LIMITED WARRANTY
Lomanco, Inc. warrants this product for five (5) years against defects due to workmanship, parts or
mechanical failure. For warranty service, the defective product must be sent, freight prepaid, to Lomanco,
Inc., 2102 West Main Street, Jacksonville, AR, 72076. If the unit is found to be defective, it will be replaced
with a new unit at no charge and returned, freight prepaid. This warranty does not include replacement
due to destructive storms. ANY IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE ARE ALSO LIMITED IN DURATION TO FIVE (5) YEARS; CONSEQUENTIAL DAMAGES TO
PROPERTY RESULTING FROM A BREACH OF ANY WARRANTY MENTIONED HEREIN ARE EXPRESSLY
EXCLUDED. Some states do not allow limitations on how long an implied warranty last or do not allow
exclusion or limitations of consequential damages, so the above limitations may not apply to you. This
warranty gives you specific legal rights and you may also have other rights which vary from state to state.
GUARANTEE APPLIES TO RESIDENTIAL ATTIC USE ONLY AS AN EXHAUST VENT IN A BALANCED
VENTILATION SYSTEM.
GUARANTEE IS VOID IF USED ON FIREPLACE, CHIMNEY, STOVEPIPE OR ANY APPLICATION OTHER
THAN AS INTENDED BY LOMANCO.
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base. Line up the predrilled holes in the
brackets and elbow and fasten with sheet
metal screws.
Position the turbine head on the
1.800.643.5596 • Lomanco, Inc. • www.lomanco.com
9
that turbine vent turns freely. NOTE: This
turbine vent can be installed on exisiting
galvanized or aluminum turbine bases of
appropriate size.
After installing, check again to see
Tools Needed:
• Screwdriver
• Level
• Jig Saw
• Putty Knife
• Utility Knife
• Drill
• Hammer
• Tape Measure
20450_1212
OMANCO
®
How To Locate and Space
IB-8 Turbine Vent
1/4
Back of House
1/4
Proper Spacing With Two
Turbine Vents Installed
Turbine vents should be located near the peak of the roof
on the rear slope, exposed to the wind from all directions.
When installing two, place each one ¼ of the total length of
the roof peak from each end of the house.
Example: On a 40' roof, each turbine vent should be 10'
from each end of the house.
Turbine vents should be located near the peak of the roof on the
rear slope, exposed to the wind from all directions. When installing
three, one should be installed 1/6 of the total length of the roof
peak from each end of the house and one should be installed in
the center.
Example: On a 60' roof, the two outside turbine vents should be
10' from each end of the house – and the center one should be 30'
from either end of the house.
1/6 CENTER 1/6
Back of House
Proper Spacing With Three
Turbine Vents Installed
A Properly Ventilated Attic Must
Have Intake and Exhaust Vents
DO’S AND DON’TS FOR
ATTIC VENTILATION.
DO install all Exhaust Ventilation at the SAME
HEIGHT within a common attic area.
Installation of exhaust vents at more
than one level on a roof allows the upper
exhaust vent to wrongly pull air in from
lower exhaust vent rather than from the
sot Intake Vents.
DON’T install exhaust vents at dierent heights.
DON’T install Ridge Vents down the hip.
DO install ONLY ONE TYPE of Exhaust
Ventilation within a common attic area.
Exhaust Vents pull air from the easiest
Intake source. The use of two or more
types of exhaust vents such as Power Vents
with Roof Vents or Gable Vents with Ridge
Vents or Roof Vents could make one of
these vents act as intake instead of pulling
air from the sot vents.
DON’T mix dierent types of exhaust vents.
DO install a BALANCED SYSTEM of Intake and
Exhaust Ventilation. 50% Intake and 50%
Exhaust is a balanced system. Improper
intake may lead to snow or rain inltration
into the exhaust vents.
Stale, Moist Air Out
Front of
House
Back of House
Insulation
IMPORTANT Do not cover turbine vents in colder
months. Turbine vents will help remove damaging
moisture present in all attics. If this moisture is
not removed, it could condense and ruin your
insulation.
Make Sure
Insulation
Material Does
Not Block
intake Vents
Intake
Sot
Ventilator
Fresh
Air In
1.800.643.5596 • Lomanco, Inc. • www.lomanco.com
20450_1212
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