07 22 00 - Roof and Deck Insulation.pdf

Aquatic Therapy Center and Therapy Center DVA Project Nos.

Building 530 640-370 / 640-CSI-100 VAPAHCS Palo Alto, CA

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SECTION 07 22 00

ROOF AND DECK INSULATION

PART 1 - GENERAL

1.1 DESCRIPTION

A. Installation of roof and deck insulation including pre-primed deck board and self adhering vapor barrier ready to receive thermoplastic polyolefin (TPO) roofing.

1.2 RELATED WORK

A. Wood blocking and edge strips: Section 06 10 00, ROUGH CARPENTRY.

B. Perimeter, rigid, and batt or blanket insulation: Section 07 21 13, THERMAL INSULATION.

C. Protection board install over roof insulation: Section 07 54 23, THERMOPLASTIC POLYOLEFIN (TPO) ROOFING.

1.3 QUALITY CONTROL

A. Supervision of work by persons that are knowledgeable and experienced in roofing. See submittals for documentation of supervisors qualification.

B. Unless specified otherwise, comply with the recommendations of the NRCA "Roofing and Waterproofing Manual" applicable to insulation for storage, handling, and application.

1.4 SUBMITTALS

A. Submit in accordance with Section 01 33 23, SHOP DRAWINGS, PRODUCT

DATA, AND SAMPLES.

B. Manufacturer's Literature and Data:

1. Roof insulation, each type

2. Pre-primed deck board

3. Self adhering vapor barrier

4. Adhesive

C. Samples:

1. Roof insulation, each type

2. Pre-primed deck board

3. Self adhering vapor barrier

D. Certificates: Indicating materials and method of application of insulation system on metal decks meet the requirements of Factory Mutual Research Corporation for Class 1 Insulated Steel Deck Roofs.

E. Layout of tapered roof system showing units required.

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F. Documentation of supervisors training and experience showing knowledge of roofing procedures.

1.5 DELIVERY, STORAGE AND MARKING

A. Deliver materials to the site in original sealed packages or containers marked with the name and brand, or trademark of the manufacturer or seller.

B. Keep materials dry, and store in dry, weathertight facilities or under canvas tarps. Use of polyethylene or plastic tarps to cover materials is not permitted. Store above ground or deck level on wood pallets.

Cover ground under stored materials with plastic tarp.

1. Store rolled materials (felts, base sheets, paper) on end. Do not store materials on top of rolled material.

2. Store foam insulation away from areas where welding is being performed and where contact with open flames is possible.

C. Protect from damage from handling, weather and construction operations before, during, and after installation.

1.6 APPLICABLE PUBLICATIONS

A. The publications listed below form a part of this specification to the extent referenced. The publications are referenced in the text by the basic designation only.

B. ASTM International (ASTM):

C1289-08................Faced Rigid Cellular Polyisocynurate Thermal Insulation Board

D1970-09................Self-Adhering Polymer Modified Bituminous Sheet Materials Used as Steep Roofing Underlayment for Ice Dam Protection

D5201-05A...............Calculating Formulation Physical Constants of Paints and Coatings

E84-08..................Surface Burning Characteristics of Building Materials

C. National Roofing Contractors Association (NRCA):

The NRCA Roofing and Waterproofing Manual - Fourth Edition.

D. Underwriters Laboratories, Inc. (UL):

Fire Resistance Directory (2003)

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1.7 QUALITY ASSURANCE

A. Roof insulation on combustible or steel decks shall have a flame spread rating not greater than 75 and a smoke developed rating not greater than 150, exclusive of covering, when tested in accordance with ASTM E84. Insulation bearing the UL label and listed in the UL Building Materials Directory as meeting the flame spread and smoke developed ratings will be accepted in-lieu-of copies of test reports. Compliance with flame spread and smoke developed ratings will not be required when insulation has been tested as part of a roof construction assembly of the type used for this project and the construction is listed as fire-classified in the UL Building Materials Directory. Insulation tested as part of a roof construction assembly shall bear UL labels attesting to the ratings specified herein.

PART 2 - PRODUCTS

2.1 INSULATION

A. Isocyanurate Board: Rigid roof insulation board composed of closed cell polyisocyanurate core bonded in manufacturing process to fiber glass reinforced facers; ASTM C1289, Type II, Class 1 Grade 2.

B. Tapered Roof Insulation System Segments:

1. Fabricate of isocyanurate. Use only one insulation material for tapered sections.

2. Cut to provide high and low points with crickets and slopes as shown.

3. Minimum thickness of tapered sections; 13 mm (1/2 inch), unless manufacturers allow taper to zero mm (inch).

2.2 PRE-PRIMED DECK BOARD

A. Glass mat faced gypsum board with non-asphaltic, highly filled heat cured coating on one side, classified Type x by UL, 15.88 mm (5/8 inch) thick.

2.3 SELF ADHESIVE VAPOR BARRIER

A. Self-adhering membrane composed of rubberized asphalt roofing sheet with inorganic glass mat for reinforcement with following physical properties when tested in accordance with ASTM D1970.

1. Thickness: 1.6 mm (63 mils).

2. Breaking Strength -MD: 10.5 kN/m (60 lbf/in).

3. Breaking Strength -CMD: 8.8 kN/m (50 lbf/in).

4. Flexibility Temperature: Minus 30 degrees Celsius (Minus 22 degrees

Fahrenheit).

5. Tear Resistance:

a. Longitudinal: 7.0 kN/m (40 lbf/in).

b. Transverse: 6.0 kN/m (34 lbf/in).

6. Water Absorption: 0.05 percent.

7. Thermal Stability: 1.3 mm (0.05 inch).

8. Water Vapor Transmission: 001 U.S. Perms.

9. Elongation: 15.0 percent.

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2.4 ADHESIVE

A. Two component polyurethane adhesive with zero VOC content when tested in accordance with ASTM D5201.

2.5 MISCELLANEOUS

A. Tapered Edge Strips:

1. Tapered 1:12 (one inch per foot), from 0 mm (0 inches), 300 mm to

450 mm (12 inches to 18 inches) wide.

2. Cellulosic Fiberboard: ASTM C208.

3. Mineral Fiberboard: ASTM C726.

4. Perlite Board: ASTM C728.

PART 3 - EXECUTION

3.1 GENERAL

A. Do not apply roof insulation if deck will be used for subsequent work platform, storage of materials, or staging or scaffolding will be erected thereon.

B. Entire roof deck construction of any section of the building shall be completed before insulation system work is begun. Curbs, blocking, edge strips, and other components which insulation, roofing and base flashing is attached to shall be in place ready to receive insulation and roofing. Coordinate roof insulation operations with roofing and sheet metal work so that insulation is installed to permit continuous roofing operations.

C. Insulation system materials shall be dry and damage free when applied.

Do not use broken insulation or insulation with damaged facings. Remove damaged insulation from the site immediately.

D. Dry out surfaces, including the flutes of metal deck, that become wet from any cause during progress of the work before roofing work is resumed. Apply materials only to dry substrates.

E. Except for temporary protection specified, do not apply materials during damp or rainy weather, during excessive wind conditions, nor while moisture (dew, fog, snow, ice) or frost is present in any amount in or on the materials when temperature is below 10 C (50 F). Do not apply materials to substrate having temperature of 10 C (50 F) or less.

F. Phased construction is not permitted. The complete installation of all flashing, insulation, and roofing shall be completed in the same day except for the area where temporary protection is required when work is stopped.

3.2 SURFACE PREPARATION

A. Sweep decks to broom clean condition. Remove all dust, dirt or debris.

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B. Remove projections that might damage materials.

3.3 SELECTION OF RIGID INSULATION

A. Insulation Type:

1. Use isocyanurate board.

2. Where tapered insulation is used, all insulation shall be factory tapered.

B. Insulation Thickness:

1. Thickness of roof insulation shown on drawings is nominal. Actual thickness shall provide the thermal resistance "R" value of not less than 35 for uniform thickness.

2. When thickness of insulation to be used is more or less than that shown on the drawings, make adjustments in the alignment and location of roof drains, flashing, gravel stops, fascias and similar items at no additional cost to the Government.

3. Where tapered insulation is used, the thickness of the insulation at high points and roof edges shall be as shown on the drawings; the thickness at the low point (drains) shall be not less than 38 mm (1- 1/2 inches).

4. Use not less than two layers of insulation when insulation is 25 mm (one inch) or more in thickness unless specified otherwise.

3.4 INSTALLATION OF PRE-PRIMED DECK BOARD

A. Adhesively install pre-primed deck board using adhesive in accordance with adhesive manufacturer’s instructions and as required by roofing manufacture.

3.5 INSTALLATION OF SELF ADHERING VAPOR BARRIER

A. Install self adhering vapor barrier in accordance with adhesive manufacturer’s instructions and as required by roofing manufacture.

Prime deck if required by manufacturer.

B. Overlap ends and all edges a minimum of 100 mm (4 inches).

3.6 INSTALLATION OF INSULATION

A. Lay insulating units with close joints, in regular courses and with cross joints broken. When laid in more than one layer, break joints of succeeding layers of roof insulation with those in preceding layer. Bed insulation adhesive in accordance with adhesive manufacturer’s instruction and as required by roofing manufacture.

B. Cover all insulation installed on the same day by either:

1. The roofing membrane as specified.

2. Temporary protection as specified.

C. Cut to fit tight against blocking or penetrations.

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