DELTA®-VENT S

Premium water-resistive barrier and air barrier. Highly vapor permeable.

ICC-ES Evaluation Report (AC38)

Properties

DELTA®-VENT S is highly vapor permeable WRB, allowing moisture within the building enclosure to escape through the membrane. Its high permeability and air-tightness makes it an ideal air and water-resistive barrier membrane for energy efficient construction. The product is watertight, and will help protect the building enclosure from wind-driven rain and snow while providing a drainage plane to channel water harmlessly to the outside of the building.

DELTA®-VENT S is Class A fire-rated. Its vapor permeable, air barrier, and watertight qualities are unaffected by surfactants.

Material

DELTA®-VENT S is a premium, 3-layer water-resistive barrier. Its two outer layers are made of a high strength spun-bonded PP fabric. They are thermally bonded to a highly vapor permeable, watertight polymeric middle layer. The fabric layer on the lower side protects the WRB against damage (e.g. roughly sawed sheathing). The matte grey color of DELTA®-VENT S prevents blinding glare during installation.

Application

DELTA®-VENT S is pleasantly light, making the installation quick and easy. This premium quality product stands up to rough handling and tearing winds at the job site.

Technical Data

Product name	DELTA®-VENT S
Color	grey
Water vapor transmission	472 g/m²/24 h 820 g/m²/24 h	ASTM E96-05, Proc. A ASTM E96-05, Proc. B
Vapor permeance	69 perms [grains/h/ft²/in Hg] 120 perms [grains/h/ft²/in Hg]	ASTM E96-05, Proc. A ASTM E96-05, Proc. B
Breaking load	MD 75.8 lb/2in CD 47.3 lb/2in	ASTM D5035-06
Elongation at break	MD 25.2 % CD 65.4 %	ASTM D5035-06
Tear resistance	MD 1078 g CD 1588 g	ASTM D1922-06a
Trapezoid tearing strength	MD 21.6 lb CD 14.6 lb	ASTM D4533-04
Fastener pull-through force	132.7 N	ASTM D3462-03
Water penetration resistance	642.8 cm	CAN/CGSB-4.2 #26.3-95
Water impact penetration resistance	no water passing	AATCC 42-2000
Flame Spread	25 NFPA Class A; UBC Class I	ASTM E84-09
Smoke developed	105 NFPA Class A; UBC Class I	ASTM E84-09
Air permeance	< 0.02 l/(s x m²) @ 75 Pa	ASTM E2178
Temperature range	-40 °F to +176 °F (-40 °C to +80 °C)
Mass per unit area	> 4.7 oz/yd² (150g/m²)	CSA A220.1-06 4.4.4
Roll weight	approx. 24 lb (11 kg)
Roll length	164 ft (50 m)
Roll width	4.92 ft (1.5 m)
Maximum UV (sunlight) exposure	3 months	Always cover as soon as possible