Tempo:
sheathing membrane or other suitable materials. Consult the manufacturers of selected materials to determine whether adjacent materials will be compatible.
Buildability Creating a flashing detail that is easy to build will greatly increase the likelihood that the flashing will be built to perform acceptably. Ask yourself the following questions:
Can the installation of flashings be sequenced to be separate from other construction activities, or can this be easily incorporated into other work? For example, coordination may be required between roofing and masonry activities at wall-roof junctions. If the installation of the flashings is to be incorporated into other work, do the workers have the required technology and skills?
Can the flashing accommodate normal stresses? Is it possible to mould or modify the material to accommodate unusual conditions, or is it possible to repair damage?
Maintenance Besides durability, future maintenance of the flashing must be considered. Materials or joint sealants with limited service lives should be avoided if the flashings are not accessible for replacement. Metal flashings built into concrete or masonry cannot be removed to allow for inspection or repair of the materials underneath. This should be considered when selecting materials and details for flashings. The flashings and sealants should be inspected annually, particularly in areas with the greatest exposure to water and sunlight.
RELATED PUBLICATIONS CSA Standard S478-95: Guidelines on Durability in Buildings, Canadian Standards Association
Buildability Creating a flashing detail that is easy to build will greatly increase the likelihood that the flashing will be built to perform acceptably. Ask yourself the following questions:
Can the installation of flashings be sequenced to be separate from other construction activities, or can this be easily incorporated into other work? For example, coordination may be required between roofing and masonry activities at wall-roof junctions. If the installation of the flashings is to be incorporated into other work, do the workers have the required technology and skills?
Can the flashing accommodate normal stresses? Is it possible to mould or modify the material to accommodate unusual conditions, or is it possible to repair damage?
Maintenance Besides durability, future maintenance of the flashing must be considered. Materials or joint sealants with limited service lives should be avoided if the flashings are not accessible for replacement. Metal flashings built into concrete or masonry cannot be removed to allow for inspection or repair of the materials underneath. This should be considered when selecting materials and details for flashings. The flashings and sealants should be inspected annually, particularly in areas with the greatest exposure to water and sunlight.
RELATED PUBLICATIONS CSA Standard S478-95: Guidelines on Durability in Buildings, Canadian Standards Association
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