Eave vents, which are designed to move air in and out of the attic, give opportunity for embers to ignite soffit material or enter attic areas. Once a fire starts in an attic, it goes undetected for some time and is very difficult to stop even under ideal conditions.

Kingspan 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 sofit to the attic space.

Feb 25, 2023 · Over the attic is 2×12 rafters, for the 9/12 pitch roof. Entry into the attic is through a folding ladder with built-in plywood that lifts against the framed box in the ceiling below.

O’Hagin utilizes state-of-the-art manufacturing techniques to produce an extensive line of attic ventilation solutions. Our patented vents compliment surrounding tiles, shingles, shake, and slate roofs and are available in the following design choices.

EXTEND THE ROOF’S LIFE Ventilation protects attic insulation and rafter cavities from moisture, thereby reducing the risk of mold and dry rot. MAINTAIN CURB APPEAL When painted to match, O’Hagin attic ventilation systems are designed to blend into surrounding roofing material.

The amount of attic cavity ventilation is specified by numerous ratios of free vent area to insulated ceiling area ranging from 1:150 to 1:600 depending on which building code is consulted, the 1:300 ratio being the most common.

Avoiding moisture intru-sion and ensuring proper ventilation are the keys to a durable attic. You can ensure you have a durable attic by following the steps outlined in this guide either during the initial (new) construction or as an energy-eficien-cy upgrade to an older home.

Scan this QR Code with your smart phone to watch easy step-by-step install videos. If you live in a Wildland Urban Interface area (WUI), upgrade to our FIRE&ICE® product line. Scan the QR Code to learn more. O’Hagin is a recognized leader in attic ventilation testing and design.

See Product Data Sheet No.3 for more information. This is permanent bracing which holds the trusses upright, straight and prevents any out-of-plane buckling of the members.

ATTIC OR GARAGE INSTALLATIONS FOR THIS PACKAGE ONLY. CHECK WITH A CERTIFIED MITIGATION PROFESSIONAL FOR LOCAL CODES. New and improved KTA model 2.0 HERE. KTA tutorials here. The KTA 1.0 low voltage fan from PDS. The KTA 1.0 saves time.