DriwalITM CDR Vent is a 0.30-inch-thick drainage and ventilation mat. It is designed to eliminate moisture and moisture vapor in roofing and siding applications. DriwalITM CDR Vent is useful in cedar shingle/shake roofing and siding in which a clean airspace is desired for ventilation and drainage.
http://www.keenebuilding.com/residential-driwall-cdr-vent-complete-drained-roof.aspx
Impact Sound Control Ceiling Isolation Moisture Drainage & Ventilation KEENE BUILDING PRODUCTS is the manufacturer, distributor & marketer of 3-dimensional products for moisture & noise control.
In six short years Keene has succeeded in producing & marketing first class products. These products work in construction projects such as multi-family apartments & condominiums to stop impact & airborne noise, & in wall, masonry, foundation & plaza applications to eliminate moisture problems.
For Impact Sound Control products please see our QUIET QURL® product line. For Ceiling Isolation please see Acoustical Assurance products such as RC Assurance & Space Assurance.
For Moisture Drainage & Ventilation please see our DRIWALL products such as Weep Vents, mortar collection devices & full wall Rainscreen applications.