NRCA has made available Quality Control Guidelines for the Application of Asphalt Shingle Roof Systems, a joint project between NRCA and the Asphalt Roofing Manufacturers Association that is intended to provide guidance for the on-site evaluation of asphalt shingle roof system application. The guidance in the document is based on the technical knowledge of experienced asphalt shingle manufacturers and installers.
The document provides visual examination evaluation criteria for the roof substrate surface, underlayment, drip edge, fasteners, asphalt shingles and flashings.
