CVRS – Cornell Ventilated Roof Sheathing

• Factory-made ventilated sheathing panel built with wood spacer blocks
• 1" deep open space (1-1/2" open space optional) to allow airflow below the sheathing in all directions
• 7/16" OSB Standard; 5/8" or 3/4" optional
• Eliminates field fabrication – saves time!
• Used with Shingles and Metal Roofing

Shingle manufacturers require ventilation between the roof sheathing and the insulation. Cornell Ventilated Roof Sheathing provides the sheathing and the ventilation space in one product. It is used above the roof deck and insulation. This is particularly useful when reroofing buildings where the existing insulation is sufficient. Eave and ridge vents (by others) are used to allow air flow through the ventilated space.

Cornell Ventilated Roof Sheathing allows ventilation in all directions which is most important on buildings with hips and valleys or other obstructions. Small solid wood spacers occupy only 8% of the panel area, leaving 92% ventilated.

The spacers are less than 12" apart in both directions which greatly reduces the flexibility of the sheathing. Cornell Ventilated Roof Sheathing provides over 10 sq. in. of Net Free Area per Lineal Foot of sheathing after deducting for the spacer blocks. This exceeds the standard 18 sq. in. per foot (9 sq. in. per foot each side) used in the ridge vent industry.

CORNELL CORPORATION
808 South 3rd Street
P.O. Box 338
Cornell , Wisconsin 54732
Tel: (888) 439-6411
Fax: (800) 267-8368
E-Mail: cornell@cornellcorporation.com
Web site: www.cornellcorporation.com