NRCA is seeking the best young roofing talent in the U.S. to represent Team USA! Learn more.

Glossary

Search for roofing terms


SEARCH RESULTS

  
        
        
Term Description
Head lap (1) The distance of overlap measured from the uppermost ply or course to the point where it laps over the undermost ply or course; (2) the head lap area.
Advertisement

Subscribe for Updates Join 25,000+ roofing professionals following NRCA

Subscribe to NRCA