CERTIFICATIONS:
John Manville
U.S. Intec
Soprema
Duro-Last
IB Roof Systems
Elk
Certainteed
G.A.F.
Owens Corning
Monier Lifetile
U.S. Tile
Custom-Built Metals
Malarkey Roofing Products
Grace Construction Products
Affiliations:
National Roofing Contractors Association (NRCA) Building Trades Association
Metal Roofing Alliance (MRA)
Builders Exchange
Alameda County
Contra Costa County
San Fransisco County
