07 21 16 Blanket Insulation-1111(Nov).pdf

IDIQ ROOF MAINTENANCE/REPAIR/REPLACEMENT VNVP 111080

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November 2011

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BLANKET INSULATION

PART 1 - GENERAL:

1.1. REFERENCES: The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.

ASTM INTERNATIONAL (ASTM)

ASTM C 665 (2006) Mineral-Fiber Blanket Thermal Insulation for Light Frame

Construction and Manufactured Housing

ASTM C 930 (2005) Potential Health and Safety Concerns Associated with

Thermal Insulation Materials and Accessories

ASTM D 3833/D 3833M (1996; R 2006) Water Vapor Transmission of Pressure-

Sensitive Tapes

ASTM D 4397 (2009) Standard Specification for Polyethylene Sheeting for

Construction, Industrial, and Agricultural Applications

ASTM E 136 (2009a) Behavior of Materials in a Vertical Tube Furnace at 750

Degrees C

ASTM E 84 (2009c) Standard Test Method for Surface Burning Characteristics of

Building Materials

ASTM E 96/E 96M (2005) Standard Test Methods for Water Vapor Transmission of Materials

NATIONAL FIRE PROTECTION ASSOCIATION (NFPA)

NFPA 211 (2010) Standard for Chimneys, Fireplaces, Vents, and Solid Fuel-

Burning Appliances

NFPA 31 (2006; Errata 06-1 & -2) Standard for the Installation of Oil Burning

Equipment

NFPA 54 (2009) National Fuel Gas Code NFPA 70 (2008; AMD 1 2008) National

Electrical Code

TECHNICAL ASSOCIATION OF THE PULP AND PAPER INDUSTRY (TAPPI)

TAPPI T803 OM (2006) Puncture Test of Container Board

U.S. NATIONAL ARCHIVES AND RECORDS ADMINISTRATION (NARA)

29 CFR 1910.134 Respiratory Protection

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November 2011

1.2. SUBMITTALS: The following shall be submitted in accordance with Section 01 33 00

SUBMITTAL PROCEDURES:

SD-03 Product Data

Blanket insulation

Sill sealer insulation

Vapor retarder

Pressure sensitive tape

Accessories

SD-08 Manufacturer's Instructions

Insulation

1.3. DELIVERY, STORAGE, AND HANDLING:

1.3.1. Delivery: Deliver materials to site in original sealed wrapping bearing manufacturer's name and brand designation, specification number, type, grade, R-value, and class. Store and handle to protect from damage. Do not allow insulation materials to become wet, soiled, crushed, or covered with ice or snow. Comply with manufacturer's recommendations for handling, storing, and protecting of materials before and during installation.

1.3.2. Storage: Inspect materials delivered to the site for damage; unload and store out of weather in manufacturer's original packaging. Store only in dry locations, not subject to open flames or sparks, and easily accessible for inspection and handling.

1.4. SAFETY PRECAUTIONS

1.4.1. Respirators: Provide installers with dust/mist respirators, training in their use, and protective clothing, all approved by National Institute for Occupational Safety and

Health (NIOSH)/Mine Safety and Health Administration (MSHA) in accordance with

29 CFR 1910.134.

1.4.2. Smoking: Do not smoke during installation of blanket thermal insulation.

1.4.3. Other Safety Concerns: Consider other safety concerns and measures as outlined in ASTM C 930.

PART 2 - PRODUCTS:

2.1. BLANKET INSULATION: ASTM C 665, Type I, blankets without membrane coverings, and Type II, blankets with non-reflecting coverings and Type III, blankets with reflective coverings; Class A, membrane-faced surface with a flame spread of 25 or less, Class B, membrane-faced surface with a flame propagation resistance; critical radiant flux of

0.11. Btu/ft2 or greater, except a flame spread rating of 25 or less and a smoke developed rating of 150 or less when tested in accordance with ASTM E 84.

2.1.1. Thermal Resistance Value (R-VALUE): As determined by MIL-HDBK 1190, Facility Planning Design Guide

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November 2011

2.1.2. Recycled Materials: Provide Thermal Insulation containing recycled materials to the extent practicable, provided the material meets all other requirements of this section.

The minimum required recycled materials content by weight are:

Rock Wool: 75 percent slag

Fiberglass: 20 to 25 percent glass cullet

2.1.3. Prohibited Materials: Do not provide asbestos-containing materials.

2.1.4. Faced Insulation

2.1.4.1. Faced Blanket Insulation: Insulation shall be a blanket type insulation of sufficient thickness to provide a minimum "R" value of 6 when tested in accordance with ASTM C 177 through the insulation blanket. Insulation shall have a facing providing a permeability of 0.02 perm or less when tested in accordance with ASTM E 96. Facing shall have a flame spread rating of less than 25 when tested in accordance with ASTM C 84. Blanket insulation shall conform to ASTM

C 665, Type II, Class A or Type III, Class A. Typically, blanket insulation will be installed between roof panel or wall panel and retro-fit structure.

2.1.4.2. Faced Batt Insulation: Faced batt insulation shall be a foil faced, batt type fibrous glass insulation of sufficient thickness to provide a minimum "R" value of

19 when tested in accordance with ASTM C 518 through the insulation batt.

Insulation shall have a facing providing a permeability of 0.05 perm or less when tested in accordance with ASTM E 96. Facing shall have a flame spread rating of less than 25 when tested in accordance with ASTM E 84. Batt insulation shall be foil faced and shall conform to ASTM C 665, Type III, Class A. Insulation shall be sized as appropriate, either 24 inches on center or 16 inches nominal width.

Typically, batt insulation will be installed as a covering over existing roof membrane.

2.2. SILL SEALER INSULATION: ASTM C 665, Type I.

2.3. BLOCKING: Wood, metal, unfaced mineral fiber blankets in accordance with ASTM

C 665, Type I, or other approved materials. Use only non-combustible materials meeting the requirements of ASTM E 136 for blocking around chimneys and heat producing devices.

2.4. VAPOR RETARDER:

a. 6 mil thick polyethylene sheeting conforming to ASTM D 4397 and having a water vapor permeance of 5.72 by 10-8g/Pa.s.m2 1 perm or less when tested in accordance with ASTM E 96/E 96M.

b. Membrane with the following properties:

Water Vapor Permeance: ASTM E 96/E 96M: 1 perm

Maximum Flame Spread: ASTM E 84: 25

Combustion Characteristics: Passing ASTM E 136

Puncture Resistance: TAPPI T803 OM: 15

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2.5. PRESSURE SENSITIVE TAPE: As recommended by the vapor retarder manufacturer and having a water vapor permeance rating of one perm or less when tested in accordance with ASTM D 3833/D 3833M.

2.6. ACCESSORIES:

2.6.1. Adhesive: As recommended by the insulation manufacturer.

2.6.2. Mechanical Fasteners: Corrosion resistant fasteners as recommended by the insulation manufacturer.

2.6.3. Wire Mesh: Corrosion resistant and as recommended by the insulation manufacturer.

PART 3 - EXECUTION:

3.1. EXISTING CONDITIONS: Before installing insulation, ensure that areas that will be in contact with the insulation are dry and free of projections which could cause voids, compressed insulation, or punctured vapor retarders. If moisture or other conditions are found that do not allow the workmanlike installation of the insulation, do not proceed but notify Contracting Officer of such conditions.

3.2. PREPARATION:

3.2.1. Blocking at Attic Vents and Access Doors: Prior to installation of insulation, install permanent blocking to prevent insulation from slipping over, clogging, or restricting air flow through soffit vents at eaves. Install permanent blocking around attic trap doors. Install permanent blocking to maintain accessibility to equipment or controls that require maintenance or adjustment.

3.2.2. Blocking Around Heat Producing Devices: Install non-combustible blocking around heat producing devices to provide the following clearances:

a. Recessed lighting fixtures, including wiring compartments, ballasts, and other heat producing devices, unless these are certified by the manufacturer for installation surrounded by insulation: 3 inches from outside face of fixtures and devices or as required by NFPA 70 and, if insulation is to be placed above fixture or device, 24 inches above fixture.

b. Masonry chimneys or masonry enclosing a flue: 2 inches from outside face of masonry. Masonry chimneys for medium and high heat operating appliances:

Minimum clearances required by NFPA 211.

c. Vents and vent connectors used for venting the products of combustion, flues, and chimneys other than masonry chimneys: Minimum clearances as required by

NFPA 211.

d. Gas Fired Appliances: Clearances as required in NFPA 54.

e. Oil Fired Appliances: Clearances as required in NFPA 31. Blocking around flues and chimneys is not required when insulation blanket, including any attached vapor retarder, passed ASTM E 136, in addition to meeting all other requirements

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November 2011 stipulated in Part 2. Blocking is also not required if the chimneys are certified by the manufacturer for use in contact with insulating materials.

3.3. INSTALLATION:

3.3.1. Insulation: Install and handle insulation in accordance with manufacturer's instructions. Keep material dry and free of extraneous materials. Ensure personal protective clothing and respiratory equipment is used as required. Observe safe work practices.

3.3.1.1. Electrical wiring: Do not install insulation in a manner that would sandwich electrical wiring between two layers of insulation.

3.3.1.2. Continuity of Insulation: Install blanket insulation to butt tightly against adjoining blankets and to studs, rafters, joists, sill plates, headers and any obstructions. Where insulation required is thicker than depth of joist, provide full width blankets to cover across top of joists. Provide continuity and integrity of insulation at corners, wall to ceiling joints, roof, and floor. Avoid creating thermal bridges.

3.3.1.3. Installation at Bridging and Cross Bracing: Insulate at bridging and cross bracing by splitting blanket vertically at center and packing one half into each opening. Butt insulation at bridging and cross bracing; fill in bridged area with loose or scrap insulation.

3.3.1.4. Cold Climate Requirement: Place insulation to the outside of pipes.

3.3.1.5. Insulation Blanket with Affixed Vapor Retarder: Locate vapor retarder as indicated. Do not install blankets with affixed vapor retarders unless so specified.

Unless the insulation manufacturer's instructions specifically recommend not to staple the flanges of the vapor retarder facing, staple flanges of vapor retarder at 6 inch intervals flush with face or set in the side of truss, joist, or stud. Avoid gaps and bulges in insulation and "fishmouth" in vapor retarders. Overlap both flanges when using face method. Seal joints and edges of vapor retarder with pressure sensitive tape. Stuff pieces of insulation into small cracks between trusses, joists, studs and other framing, such as at attic access doors, door and window heads, jambs, and sills, band joists, and headers. Cover these insulated cracks with vapor retarder material and tape all joints with pressure sensitive tape to provide air and vapor tightness.

3.3.1.6. Insulation without Affixed Vapor Retarder: Provide snug friction fit to hold insulation in place. Stuff pieces of insulation into cracks between trusses, joists, studs and other framing, such as at attic access doors, door and window heads, jambs, and sills, band joists, and headers.

3.3.1.7. Sizing of Blankets: Provide only full width blankets when insulating between trusses, joists, or studs. Size width of blankets for a snug fit where trusses, joists or studs are irregularly spaced.

3.3.1.8. Special Requirements for Ceilings: Place insulation under electrical wiring occurring across joists. Pack insulation into narrowly spaced framing. Do not block

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November 2011 flow of air through soffit vents. Attach insulation to attic door by adhesive or staples.

3.3.1.9. Installation of Sill Sealer: Size sill sealer insulation and place insulation over top of masonry or concrete perimeter walls or concrete perimeter floor slab on grade. Fasten sill plate over insulation.

3.3.1.10. Special Requirements for Floors: Hold insulation in place with corrosion resistant wire mesh, wire fasteners, or wire lacing.

3.3.1.11. Access Panels and Doors: Affix blanket insulation to access panels greater than one square foot and access doors in insulated floors and ceilings. Use insulation with same R-Value as that for floor or ceiling.

3.3.2. Installation of Separate Vapor Retarder: Apply continuous vapor retarder as indicated. Overlap joints at least 6 inches and seal with pressure sensitive tape. Seal at sill, header, windows, doors and utility penetrations. Repair punctures or tears with pressure sensitive tape.

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