Duro-Last Two-Way Air Vent User Manual
DURO-LAST® TWO-WAY AIR VENT
Duro-Last® Two-Way Air Vents are fabricated from a
rigid exterior vinyl with an 18 x 18 inch (457 x 457 mm)
base made with Duro-Last's specially formulated roofing
membrane which is a proprietary thermoplastic
formulation.
The Two-Way Air Vent incorporates a reticulated foam
screen to inhibit insect entry. The base is available in
white, tan, gray, dark gray and terra cotta as well as in
the Designer Series membranes (slate gray
Shingle-Ply
and is usually ordered to match the roof membrane.
Material Safety Data Sheet:
MSDS Number: 1231
Installation:
1. Two-Way Air Vents shall be installed at the density of
one per each 1,000 ft.² (93 m²) of deck area and any
fraction thereof, with a minimum of one per roof area.
2. Vents are to be evenly spaced across the roof area.
3. Never mechanically attach the Two-Way Air Vents to
the roof deck.
4. The Two-Way Air Vent feet are to be installed under
the deck membrane.
5. Two-Way Air Vents shall have their skirts heat welded
(hot-air) to the field membrane.
6. Refer to detail drawing 5020 for installation
information.
, sandstone Shingle-Ply and Rock-Ply)
DATA SHEET
Note:
Two-Way Air Vents are not required on
refrigerated/freezer buildings.
Mobile home applications require an even number of
vents (two minimum).
Duro-Last: The Proven Performer®
www.duro-last.com
"Duro-Last " an d " The World's Best Roof" are registered marks owned by Duro-Las t , Inc.
61
Two-Way Air Vent
(Install per detail drawing 5020)
800-248-0280
Revised: 4/6/2011
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