Cor-A-Vent Product Guide

Our website contains a complete listing of application details in .PDF and .DWG formats for viewing or downloading. USE BALANCED AMOUNTS OF SOFFIT VENT TO RIDGE VENT Balanced Ventilation is not only having an equal amount of ridge and soffit vents in net free inches, but having the soffit and ridge vents balance each other on the structure. Wherever there is ridge vent above, there should be soffit/eave/intake vents on the structure below. Call our technical service dept. for help with any standard or specialty ridge or soffit applications. Important notes: COR-A-VENT ridge vents should always be installed with soffit/eave/intake vents of equal or greater area. All other vent openings (except soffits) should be closed off . The air passage way or “Ventilation Chute” between the inlet (soffit/eave/intake) and the outlet (ridge) vent must not be blocked or restricted. Figuring Your Ventilation Needs: V-600 = 20 Sq. inches NFVA/lineal foot. V-300 = 13.5 Sq. inches NFVA/lineal foot. V-600: Square footage of building footprint X . 48 = Lineal Feet V-600 needed 20 V-300: Square footage of building footprint X . 48 = Lineal Feet V-300 needed 13.5 Example: 25' x 50' = 1250 Sq.F. 1250 x .48 = 600 600 ÷ 20 = 30 L.F. V-600 needed The above formulas will give the amount of COR-A-VENT ridge vent needed for a 1/150 vent ratio, provided an equal or greater amount of soffit venting is used. For a 1/300 ratio, (building code minimum) use half the amount of ridge vent. Note: Code interpretation may vary. Consult your local building dept. COR-A-VENT ® Folded End Cap Instructions: For the best appearance, install COR-A-VENT continuously the entire length of the ridge. Be careful not to touch knife blade. Always cut in a direction away from yourself. Wear proper hand and eye protection. 1 3 / 4 " V-300 2" V-600 ©2006 COR-A-VENT, Inc. 10/01 4-Page Installation Instructions “This material may be duplicated only for the purposes of specifying COR-A-VENT ® products. No permission is given to duplicate or otherwise copy this material for any other purpose without the express written permission of COR-A-VENT, Inc.” 1. Turn vent piece (V-300 shown) over so routed slot is facing up. Use utility knife to cut out a "V" shaped notch in one end of vent. 2. Measure 1 3 / 4 " from end of vent and make a parallel cut through bottom 3 layers. For V-600, measure 2" from end and cut through bottom 5 layers. Remove loose pieces. Be careful not to cut off top layer!! 3. Fold end flap under and secure with a roofing nail – 2" for V-300 or 2 1 / 2 " for V-600. This allows for the nail to penetrate an extra layer of vent material. 4. Nail vent pieces to roof per instructions above. Be sure to caulk between bottom edge of vent and roof at both ends of the ridge. COR-A-VENT, Inc. P.O. Box 428 • Mishawaka, IN 46546-0428 Phone: (800) 837-8368 Fax: (800) 645-6162 info@cor-a-vent.com • www.cor-a-vent.com