General Construction Specifications
PART 1 - GENERAL
01 WORK INCLUDED
A. Furnish and install specified insulation for plumbing piping as follows.
1. Domestic/potable cold water piping.
2. Domestic/potable hot water piping.
3. Sanitary waste and drain lines in horizontal positions, which carry cold condensate drainage.
4. Indirect D.W.V. copper drain lines which carry cold condensate drainage water.
B. Provide necessary labor, materials, tools and to perform work required on the Contract Drawings and specified herein.
C. Pipe fittings, elbows, tees, valves, unions, strainers and associated items shall be insulated.
D. Where electrical heat tracing cable is shown, noted, or specified on piping, it shall be installed with insulation over the cable and pipe.
1.02 QUALITY ASSURANCE AND REGULATORY REQUIREMENTS
A. Insulation, adhesives, coatings, sealers, tapes, covers and associated items shall have a flame spread rating of 25 or less and smoke development of 50 or less when tested in accordance with ASTM E-84, NFPA 225, UL 723, NFPA 90-A, and federal, state and local authorities having jurisdiction. Insulation materials and installation shall comply with applicable federal, state and local plumbing codes.
B. Insulation materials shall be delivered and stored in manufacturers' containers and kept free from dirt, water, chemicals, and mechanical damage.
C. Specialist Firm: Company specializing in piping and insulation installations with five (5) years experience.
D. Materials and installation shall meet the federal, state and local code requirements, including ASHRAE Guidelines for energy conservation.
E. Product data shall bear Underwriters' Laboratory label or marking.
1.03 SUBMITTALS
A. Submit product data under provisions of Specifications Section 15308: Plumbing General Provisions for specified requirements.
1.04 NON-SPECIFIED/LISTED PRODUCT OR MATERIAL SUBSTITUTIONS
A. Refer to Specifications Section 15308: Plumbing General Provisions, and Section 15309: Plumbing Product or Material Substitution Request Form.
B. If a manufacturer or Contractor wishes a non-specified/listed product or material to be considered and listed as an equivalent product or material, the above listed specifications sections shall be correctly followed, and submitted, or the proposed substitution shall be denied.
PART 2 - PRODUCTS
02 ACCEPTABLE MANUFACTURERS
A. Rigid Fiberglass Insulation.
1. Furnish and install piping insulation, at the required temperature range, and associated items as specified herein, as manufactured by Knauf Fiber Glass/GmbH or equivalent by:
a) Owens-Corning Fiberglass Corporation.
b) CertainTeed Corporation.
B. Closed-cell Elastomeric Thermal Insulation.
1. Furnish and install piping insulation, at the required temperature range, and associated items as specified herein, as manufactured by Armstrong Industry Products Division, AP Armaflex 2000, or equivalent by:
a) Rubatex Corporation.
b) Insultube/Halstead Corporation.
03 PIPING INSULATION
A. Rigid Fiberglass Insulation.
1. Shall be a heavy density preformed insulation composed of fine glass fibers bonded together with a thermosetting resin and molded in one piece sections. Insulation shall have an all service jacket (ASJ), factory-applied, composed of a reinforced white kraft paper and aluminum foil laminate. Insulation shall conform strictly to the fire-resistive qualities as specified under this section of the specifications.
2. Cover valves, flanges, unions, elbows and associated items in each piping system with equivalent thickness and composition as applied to adjoining pipe run. Install factory pre-molded, pre-cut, or job fabricated, or by cutting fiberglass insulation in short, mitered segments.
3. Provide PVC pre-molded fitting covers as specified herein.
B. Closed-cell Elastomeric Thermal Insulation.
1. Shall be a closed-cell elastomeric thermal insulation, flexible and supplied in unslit tubular form. Insulation may be cut/slit in longitudinal form for installation and real-sealed butt end joints made using Armstrong 520 adhesive, or equivalent by: Rubatex Corporation or Insultube/Halstead Corporation.
2. Cover valves, flanges, unions, elbows and associated items in each piping system with equivalent thickness and composition as applied to adjoining pipe run. Miter-cut insulation fitting covering as required and assemble with Armstrong 520 adhesive, or equivalent by: Rubatex Corporation or Insultube/Halstead Corporation.
C. Adhesives, sealers, and protective finishes shall be as recommended by the insulation manufacturer supplying the insulation for each application.
PART 3 - EXECUTION
04 INSULATION ON PLUMBING PIPING
A. Domestic Cold Water Piping: Insulate piping located in interior spaces as specified below.
1. Domestic Cold Water, 1 Inch Diameter and Smaller: 1/2 inch thickness of rigid fiberglass insulation.
2. Domestic Cold Water, 1-1/4 Inch Diameter and Larger: 1 inch thickness of rigid fiberglass insulation.
B. Domestic Hot Water Piping: Insulate piping located in interior spaces as specified below.
1. Domestic Hot Water Pipe, 1 Inch Diameter and Smaller: 1/2 inch thickness of rigid fiberglass insulation.
2. Domestic Hot Water Pipe, 1-1/4 Inch Diameter Thru 4 Inch Diameter: 1 inch thickness of rigid fiberglass insulation.
C. Horizontal Cold Waste and Cold Condensate Drain Piping: Insulate piping located in interior spaces as specified below.
1. Horizontal Cold Waste and Cold Condensate Drain Piping: 1 inch thickness of closed-cell elastomeric thermal insulation.
D. Piping Exposed to Freezing Elements: Insulate piping located inside or outside the structure or in areas/spaces subject to freezing as specified below.
1. Piping 1 Inch Diameter and Smaller: 1/2 inch thickness of rigid fiberglass insulation.
2. Piping 1-1/4 Inch Diameter Thru 4 Inch Diameter: 1 inch thickness rigid fiberglass insulation.
3. Piping 1/2 Inch Diameter Thru 2 Inch Diameter: 1/2 inch thickness of closed-cell elastomeric thermal insulation.
4. Furnish and install aluminum jacket and fittings on piping as specified herewith.
3.02 ALUMINUM JACKET COVERING
A. Piping insulation exposed to weather or freezing elements shall be finished with a .016 inch thick (or standard thickness) Childers or equivalent, aluminum jacket and Elljacs or equivalent, pre-formed aluminum covering on fittings, elbows, valves, and associated items.
3.03 RIGID FIBERGLASS INSULATION
A. Insulation on concealed piping shall be finished with white paintable, fire-retardant ASJ jacket. Insulation on piping in the mechanical rooms and elsewhere exposed to view shall be finished with an 8 oz. (226 grams) canvas jacket with two coats of Benjamin Foster fireproof sizing.
B. Butt joints firmly together and smoothly secure jacket laps and joint strips with lap adhesive. End of pipe insulation shall be sealed off with a vapor barrier coating at fittings and valves and at intervals of 21 feet on continuous runs of pipe.
C. Insulate fittings and valves with molded fiberglass fittings, segments of pipe insulation, or with firmly compressed foil-faced fiberglass blanket. Secure in place with 20 gauge corrosion-resistant wire and apply a smoothing coat of insulating cement. Vapor seal by applying a layer of open-weave glass cloth fabric embedded between two flood coats of vapor-barrier mastic. Lap glass fabric 2 inch onto adjacent pipe. (In lieu of glass cloth embedded between coats of mastic, premolded fitting covers may be used). The covers shall overlap the adjoining pipe insulation and shall be sealed at edges with vapor barrier adhesive. Secure ends of covers with pressure-sensitive vinyl tape.)
3.04 CLOSED-CELL ELASTOMERIC THERMAL INSULATION
A. Apply closed-cell elastomeric thermal insulation by slipping onto piping before it is connected, or slit lengthwise and snap over piping connected. Seal lengthwise slit and butt end joints using Armstrong 520 adhesive, or equivalent by Rubatex Corporation or Insultube/Halstead Corporation. Both surfaces to be joined shall be coated with adhesive.
B. Fittings, unions, valves, tees, elbows and associated items shall be fabricated from miter-cut closed-cell elastomeric thermal insulation material. Fabricate miter-cut fitting cover and assemble with Armstrong 520 adhesive, or equivalent by Rubatex Corporation or Insultube/Halstead Corporation. Install over pipe fittings and seal to adjoining sections of pipe insulation as required by manufacturer. Both surfaces to be joined shall be coated with adhesive.
3.05 INSTALLATION OF PIPING INSULATION
A. Domestic cold and hot water piping shall be insulated in their entirety throughout the structure as specified herewith. This includes small piping in plumbing chases and up to the pipe(s) penetration point thru finished walls. No pipes shall go "uninsulated" through the structure.
B. Install insulation products in accordance with the manufacturer's written instructions, and in accordance with recognized industry practices.
C. Surfaces shall be clean and dry prior to application of insulation. The piping system shall be tight with testing and corrections complete.
D. Install insulation materials with smooth and even surfaces. Insulate each continuous run of pipe with full-length units of insulation, with a single cut piece to complete each run. Do not use cut pieces or scraps abutting each other.
E. Refer to Specifications Section 15415 for requirements of galvanized sheet metal saddles at hangers.
F. Insulation shall not be cut at hanger locations.
G. Adhesives, cements and mastics shall be compatible with materials applied and shall not attack materials in either wet or dry state.
H. Insulation installation and workmanship shall have a well tailored appearance.
I. Refer to Specifications Section 15420 for sleeves and insulation requirements. Pipe insulation shall not pass through fire or smoke rated partitions.
3.06 PROTECTION AND REPLACEMENT
A. Maintain integrity of vapor barrier jackets on pipe insulation, and protect to prevent puncture or other damage.
B. Replace damaged insulation which cannot be repaired satisfactorily, including units with vapor barrier damage and moisture saturated units.
C. Installer of the piping insulation shall advise the Contractor of required protection for the insulation work during the remainder of the construction period, to avoid damage and deterioration.
3.07 DETAILS
A. Refer to Contract Drawings for details.
END OF SECTION
