Complete Compiled Specification.pdf - Peck Ormsby Construction

Insulation on all cold surfaces where vapor barrier jackets are used will be applied with a continuous, unbroken
vapor seal. Hangers, supports, anchors, etc., that are secured directly to cold surfaces must be adequately
insulated and vapor-sealed to prevent condensation.
Valves and fittings inside the building shall be insulated as specified for the piping systems and covered with
high temperature P.V.C. insulation fitting covers.
Fittings and valves for pipe size smaller than 4" shall be insulated and finished with Insulating and Finishing
Cement to a thickness equal to the adjoining pipe insulation. Fittings and valves for pipe sizes 4" and larger shall
be insulated with segments of the molded insulation secured with No. 20 gage galvanized annealed steel wire
finished with a smoothing coat of finishing cement. Vapor seal with a layer of glass fabric embedded between
two 1/16" coats of vapor seal adhesive. Lap seal outer jacket at least 1" on itself adjoining insulation.
In exposed areas, all fittings shall be additionally finished with FSK wrap smoothly adhered. Overlap the FSK
wrap on itself and adjoining pipe insulation. Overlap to be at least 1" on pipe insulation below 4" and 2" on sizes
4" and above. Piping exposed in occupied areas shall have a white PVC cover installed.
Insulation inserts and shields for cold surface piping such as roof drain lines and domestic cold water piping shall
be installed at all pipe hangers. Inserts between the pipe and pipe hangers shall consist of calcium silicate block
insulation of equal thickness to the adjoining insulation and shall be provided with vapor barrier where required.
Insulation inserts shall not be less than the following lengths, unless otherwise approved on submittals:
1/2" to 2-1/2" pipe size 6" long
3" to 6" pipe size 9" long
8" to 10" pipe size 12" long
Rigid metal shields shall be applied between hangers or supports and the pipe insulation. Shields shall be
formed to fit the insulation and shall extend up to the centerline of the pipe and length specified for the insulation
hanger inserts.
Vapor barrier wrap shall be sealed tight and not penetrated by the hanger or shield.
Block insulation shall be applied with edges tightly butted, joints broken, and secured with No. 16 gauge
galvanized annealed steel wire or 1/2" x .015" galvanized steel bands on 12" maximum centers for large areas.
Where required, welded studs, clips, or angles shall be provided as anchored for fire and bands. Finish shall be
Insulating and Finishing Cement applied 1/4" thick in one coat, trowelled to a smooth finish. Over the Insulating
and Finishing Cement an FSK outer jacket cloth shall be smoothly adhered with vapor barrier adhesive.
Insulation blocks shall be applied with edges tightly butted, joints broken, and secured with No. 14 gauge
galvanized annealed steel wire, or 1/2" X 0.15" galvanized steel bands on 12" maximum centers for large areas.
Where required, welded studs, clips, or angles shall be provided as anchored for wires and bands.
Over the insulation, 1" hexagonal mesh wire shall be tightly stretched in place and secured by wiring to anchors,
with edges tied together. Finish shall be Johns-Manville No. 3011 Insulating and Finishing Cement or approved
equal applied 1/4" thick in one coat, trowelled to a smooth finish.
Over the Insulating and Finishing Cement, pre-sized glass cloth shall be smoothly adhered with Adhesive.
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SEGO LILY ELEMENTARY SCHOOL CLASSROOM ADDITION March 2, 2009
INSULATION 15180-4