and shall be adjusted as necessary to provide proper operation.
Joints at
doors and windows shall be sealed according to manufacturer's
recommendations to provide weathertight construction.
3.1.6
Insulation Installation
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NOTE: If factory insulated panels are used for
roofing and siding, delete this paragraph in its
entirety.
**************************************************************************
Insulation shall be installed as indicated and in accordance with
manufacturer's instructions.
3.1.6.1
Board Insulation with Blanket Insulation
Rigid or semirigid board insulation shall be laid in close contact. If
more than one layer of insulation is required, joints in the second layer
shall be offset from joints in the first layer.
3.1.6.2
Blanket Insulation
Blanket insulation shall be installed over the purlins and held tight
against the metal roofing. It shall be supported by an integral facing or
other commercially available support system.
3.1.7
Vapor Retarder Installation
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NOTE: Choose one paragraph and delete the other.
**************************************************************************
3.1.7.1
Integral Facing on Blanket Insulation
Integral facing on blanket insulation shall have the facing lapped and
sealed with a compatible tape to provide a vapor tight membrane.
3.1.7.2
Polyethylene Vapor Retarder
The polyethylene vapor retarder membrane shall be installed over the entire
surface. A fully compatible polyethylene tape shall be used to seal the
edges of the sheets to provide a vapor tight membrane. Sheet edges shall
be lapped not less than 150 mm 6 inches. Sufficient material shall be
provided to avoid inducing stresses in the sheets due to stretching or
binding. All tears or punctures that are visible in the finished surface,
at any time during the construction process, shall be sealed with
polyethylene tape.
3.1.8
Wall Liner
Wall liner shall be securely fastened into place in accordance with the
manufacturer's recommendation and in a manner to present a neat appearance.
3.2
SPECIAL INSPECTION AND TESTING FOR SEISMIC-RESISTING SYSTEMS
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NOTE: Include this paragraph only when special
inspection and testing for seismic-resisting systems
SECTION 13121
Page 19
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