NRCA Against Cut Valleys, now.

Title : Closed cut California valleys
Author(s) : Tom Bollnow

Document : Professional Roofing
Source : Professional Roofing / National Roofing Contractors Assn.
Date : 08/07
Page(s) : 28
Keyword(s) : valley detail; closed cut; California valley
Abstract : A conventional closed-cut valley and closed-cut California valley are illustrated. NRCA does not recommend a closed-cut California valley construction in climates that experience snow loads or heavy rainfall or in locations that are exposed to accumulation of debris, such as leaves and other natural elements.