Specification Details
Pages
2
Dimensions
8.5" x 11"
Editable
Word Doc
Usage Limit
Unlimited Projects
Section
07 28 00
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Weather Barriers
Utilize this section to specify weather barriers for exterior walls behind masonry veneer, metal panels, or siding.
This specification includes the follow types of barriers, however other types may be added as required:
Sheet barriers
Rubberized sheet barriers
Fluid applied barriers
Barriers serve as a barrier against water infiltration, air infiltration, and moisture vapor transmission through exterior wall assemblies.
Barriers must be applied to a solid substrate. Even a sheet type cannot span between framing members, since wind loading could cause it to deflect and the seams to open.
A vapor retarder is generally defined as a material having a moisture vapor transmission rate less than 1 perm when tested to ASTM E96.
Careful consideration of numerous factors is required to prevent condensation from occurring within roof, wall, and floor assemblies. Climatic conditions including mean summer and winter temperatures and average relative humidity, both indoor and outdoor, can have a huge effect on moisture vapor movement. In addition, the location of the weather barrier within the assembly is critical.
In order to be effective, the barrier must be continuous, with joints sealed and the weather barriers sealed around all penetrations and at the perimeter.
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Design professionals are accustomed to seeing lengthy project specifications, so why is SimpleSpecs™ so short?
Specifications have grown evermore wordy over the years for several reasons:
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The mistaken belief that specifications must be lengthy and legal-sounding to be enforceable. In fact, quite the opposite is true. Having shorter, easily understood specifications makes us less likely to have problems in the field.
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A belief that having lots of words protects us from a Contactor making mistakes. There is no way to include enough statements to protect yourself from a bad contractor, regardless of the length of your specification.
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Our desire to be in control of the project by specifying means and methods instead of including simple, enforceable statements.
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