GreenGuard Attic Rafter Vents

Attic Rafter Vents

GreenGuard Attic Rafter Vents comprise closed–cell extruded polystyrene (XPS) that is thermoformed to a shape that, when installed between roof rafters, allows air to flow from the soffit to the attic space. GreenGuard Attic Rafter Vents allow continued air-flow to keep attics cooler in hot weather and help reduce moisture condensation in the attic during cold weather. GreenGuard Attic Rafter Vents help optimize performance of attic insulation by minimizing wind washing, prevent blown insulation from blocking the air-flow, keep the space between soffit vents and attic space open during construction and maintain air channels over time.

  • Helps maintain a constant flow of air through soffits to the attic
  • Prevents blockage of air flow by blown-in insulation
  • Does not absorb water, rot or deteriorate
  • Available in Flex and Straight Vent design options
GreenGuard_Attic Rafter Vents_Flex Straight_US_CA_1905

Available in Flex Vent and Straight Vent design

GreenGuard Attic Rafter Vents are available in Flex Vent and Straight Vent design for use in 16 inch or 24 inch rafter spaces.

Product Information

Property Test Method GreenGuard Attic Rafter Vents
Thickness (Nominal)   0.08
Water Vapor Permeance (Perms) ASTM E 96
(Desiccant Method)
Water Absorption, Max.
(% by volume)
ASTM C 272 0.2
Flame Spread
Smoke Developed

Class A 



Maximum Recommended
Use Temperature
(deg. F)
1 These numberical flame spread and smoke ratings are not intended to reflect hazards presented by this material under actual fire conditions. Local building codes should be followed.
GreenGuard Attic Rafter Vent_Product Sheet_US_CA_IMG

GreenGuard Attic Rafter Vent Product Sheet

GreenGuard Pigmented XPS Insulation Board_Safety Data Sheet_US_CA_1707_IMG

GreenGuard Pigmented XPS Insulation Board Safety Data Sheet

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Kingspan Insulation North America

Head Office & Sales Office – North America

Kingspan Insulation LLC

2100 Riveredge Parkway, Suite 175

Atlanta, Georgia



Call: +1(800) 241 4402