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Abstract
The performance of roofing systems depnds primarily on quality in design, quality in materials & quality in application. Many design professionals and material producers have programs to assure a high level of performance of their respective products. Quality assurance and on-site quality control are essential. Quality control is implemented by a series of actions necessary to bring the roofing system into conformance with prescribed specifications and codes of practice. NRCA provides a series of application guidelines to assist the contractor in providing good performing roofing for their customers. This paper deals with on-the-job quality control both before and during the roof construction process. NRCA's Project Pinpoint survey data are discussed with respect to the identification of frequently occurring performance problems that can be prevented by competent application. The paper also examines a recently published NRCA/ARMA document, "Quality Control Guidelines for Application of Built-Up Roofing" which addresses on-site inspection, problem identification and describes methods to correct defects attributed to low quality application. These ARMA/NRCA guidelines are based on experiences of practicing and knowledgeable professionals, including contractors, manufacturers and roofing technologists.
The performance of roofing systems depnds primarily on quality in design, quality in materials & quality in application. Many design professionals and material producers have programs to assure a high level of performance of their respective products. Quality assurance and on-site quality control are essential. Quality control is implemented by a series of actions necessary to bring the roofing system into conformance with prescribed specifications and codes of practice. NRCA provides a series of application guidelines to assist the contractor in providing good performing roofing for their customers. This paper deals with on-the-job quality control both before and during the roof construction process. NRCA's Project Pinpoint survey data are discussed with respect to the identification of frequently occurring performance problems that can be prevented by competent application. The paper also examines a recently published NRCA/ARMA document, "Quality Control Guidelines for Application of Built-Up Roofing" which addresses on-site inspection, problem identification and describes methods to correct defects attributed to low quality application. These ARMA/NRCA guidelines are based on experiences of practicing and knowledgeable professionals, including contractors, manufacturers and roofing technologists.
Date
9/1993
9/1993
Author(s)
William Cullen
William Cullen
Page(s)
Keyword(s)
NRCA/ARMA guidelines; NRCA documents; quality assurance; quality control; Project Pinpoint; standards; specifications
NRCA/ARMA guidelines; NRCA documents; quality assurance; quality control; Project Pinpoint; standards; specifications