Published: Jan 1998
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In general, the roofing industry has performed reasonably well in providing seals and sealants which are adequate for various roof membranes or other roofing systems. However, the seal and sealant conditions created by exposures, and the interfaces of various systems, components, and materials, is not generally well understood. This may result in a design, and its subsequent construction, which is subject to leakage, damage, premature deterioration, and disruption to building occupancy.
To date, the roofing industry has not addressed this issue of seals and sealants at a detail level. This paper addresses the primary considerations for selecting and installing building seals and sealants at low slope roofs, and provides a methodology and a checklist to be used in the selection, detailing and application of these roofing seals and sealants. The three basic types of seal conditions normally found at building roofs, and the basic causes of construction problems and criteria for evaluating roof seals and sealants are identified. The drawing examples, methodology, and checklists provide information to assist designers and others in avoiding problematic conditions associated with seals and sealants, in both new and remedial roof design and construction.
This paper addresses technical as well as non-technical issues such as compatibilities, movement capabilities, ultra violet resistance, quality assurance, and workmanship and maintenance.
Steep roof systems such as asphaltic shingles, clay tile, slate, and sheet metal are excluded from consideration in this paper.
Roofs, roofing, building, seals, sealants
Certified Construction Specifier, Associate and Consulting Architect, SHG Incorporated, Detroit, MI
Paper ID: STP15677S