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 gray 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 strength	MD 69.9 lb CD 67.3 lb	ASTM D5034-95 (2001)
Elongation at break	MD 44.6 % CD 74.1 %	ASTM D5034-95 (2001)
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
Puncture resistance	Pass	TAPPI-T803
Fastener pull-through force	132.7 N	ASTM D3462-03
Water penetration resistance (Water Ponding Test)	Pass (> 10 min.) Meets requirements of AC38 for Grade D water-resistive barrier	ICC AC38, 4.2.2, June 2011 (CCMC MF07102, Section 6.4.5)
Water penetration resistance	642.8 cm	CAN/CGSB-4.2 #26.3-95 / ISO 811:1981
Water impact penetration resistance	no water passing	AATCC 42-2000
Bent test	Pass (no cracking)	ICC AC38, 3.3.4
Pliability	Pass (no cracking)	CAN/CGSB-51.32-M77 §5.2
Flame Spread	25 NFPA Class A; UBC Class I	ASTM E84-09
Smoke developed	105 NFPA Class A; UBC Class I	ASTM E84-09
UV exposure	Pass (> 90% tensile retention after UV exposure	CCMC 07251003-2008 §5.1.2.3 (UV exposure according to ASTM G154-06)
Heat aging	Pass	CCMC 07251003-2008 §5.1.2.4
Air permeance	Pass < 0.02 l/(s x m²) @ 75 Pa < 0.004 cfm/ft² @ 1.57 psf	ASTM E2178
Linear dimensional changes	Pass (< 3%)	ASTM D1204-02
Temperature range	-40 °F to +176 °F (-40 °C to +80 °C)
Mass per unit area	> 4.4 oz/yd² (150g/m²)	CSA A220.1-06 4.4.4
Roll weight	approx. 24 lb (11 kg)
Roll length	164' (50 m)
Roll width	4' 11" (1.5 m)
Maximum UV (sunlight) exposure	Always cover as soon as possible. Maximum exposure 6 weeks.
Limitations	Avoid use of acidic silicones.