UFGS 23 07 00 Thermal Insulation for Mechanical Systems.pdf

USACE / NAVFAC / AFCEC UFGS-23 07 00 (August 2024)

Preparing Activity: USACE Superseding UFGS-23 07 00 (February 2013)

UNIFIED FACILITIES GUIDE SPECIFICATIONS

References are in agreement with UMRL dated July 2025

SECTION TABLE OF CONTENTS

DIVISION 23 - HEATING, VENTILATING, AND AIR CONDITIONING (HVAC)

SECTION 23 07 00

THERMAL INSULATION FOR MECHANICAL SYSTEMS

08/24

PART 1 GENERAL

1.1 REFERENCES

1.2 SYSTEM DESCRIPTION

1.2.1 General

1.3 SUBMITTALS

1.4 CERTIFICATIONS

1.4.1 Adhesives and Sealants

1.5 QUALITY ASSURANCE

1.5.1 Installer Qualification

1.6 DELIVERY, STORAGE, AND HANDLING

PART 2 PRODUCTS

2.1 STANDARD PRODUCTS

2.1.1 Insulation System

2.1.2 Surface Burning Characteristics

2.2 MATERIALS

2.2.1 Adhesives

2.2.1.1 Acoustical Lining Insulation Adhesive

2.2.1.2 Mineral Fiber Insulation Cement

2.2.1.3 Lagging Adhesive

2.2.1.4 Contact Adhesive

2.2.2 Caulking

2.2.3 Corner Angles

2.2.4 Fittings

2.2.5 Finishing Cement

2.2.6 Fibrous Glass Cloth and Glass Tape

2.2.7 Staples

2.2.8 Jackets

2.2.8.1 Aluminum Jackets

2.2.8.2 Polyvinyl Chloride (PVC) Jackets

2.2.8.3 Vapor Barrier/Weatherproofing Jacket

2.2.8.4 Vapor Barrier/Vapor Retarder

SECTION 23 07 00 Page 1

2.2.9 Vapor Retarder Required

2.2.9.1 White Vapor Retarder All Service Jacket (ASJ)

2.2.9.2 Vapor Retarder/Vapor Barrier Mastic Coatings

2.2.9.2.1 Vapor Barrier

2.2.9.2.2 Vapor Retarder

2.2.9.3 Laminated Film Vapor Retarder

2.2.9.4 Polyvinylidene Chloride (PVDC) Film Vapor Retarder

2.2.9.5 Polyvinylidene Chloride Vapor Retarder Adhesive Tape

2.2.9.6 Vapor Barrier/Weather Barrier

2.2.10 Vapor Retarder Not Required

2.2.11 Wire

2.2.12 Insulation Bands

2.2.13 Sealants

2.3 PIPE INSULATION SYSTEMS

2.3.1 Recycled Materials

2.3.2 Aboveground Cold Pipeline (-34 to 16 deg. C -30 to 60 deg. F)

2.3.2.1 Cellular Glass

2.3.2.2 Flexible Elastomeric Cellular Insulation

2.3.2.3 Polyisocyanurate Insulation

2.3.3 Aboveground Hot Pipeline (Above 16 deg. C 60 deg. F)

2.3.3.1 Mineral Fiber

2.3.3.2 Calcium Silicate

2.3.3.3 Cellular Glass

2.3.3.4 Flexible Elastomeric Cellular Insulation

2.3.3.5 Phenolic Insulation

2.3.3.6 Perlite Insulation

2.3.3.7 Polyisocyanurate Insulation

2.3.4 Aboveground Dual Temperature Pipeline

2.3.5 Below-ground Pipeline Insulation

2.4 DUCT INSULATION SYSTEMS

2.4.1 Factory Applied Insulation

2.4.2 Field Applied Insulation

2.4.2.1 General

2.4.3 Rigid Insulation

2.4.4 Blanket Insulation

2.4.5 Kitchen Exhaust Ductwork Insulation

2.4.6 Acoustical Duct Lining

2.4.6.1 General

2.4.6.2 Duct Liner

2.4.7 Duct Insulation Jackets

2.4.7.1 All-Purpose Jacket

2.4.7.2 Metal Jackets

2.4.7.2.1 Aluminum Jackets

2.4.7.2.2 Stainless Steel Jackets

2.4.7.3 Vapor Barrier/Weatherproofing Jacket

2.4.8 Weatherproof Duct Insulation

2.5 EQUIPMENT INSULATION SYSTEMS

PART 3 EXECUTION

3.1 APPLICATION - GENERAL

3.1.1 Display Samples

3.1.1.1 Pipe Insulation Display Sections

3.1.1.2 Duct Insulation Display Sections

3.1.2 Installation

3.1.3 Firestopping

3.1.4 Installation of Flexible Elastomeric Cellular Insulation

3.1.4.1 Adhesive Application

3.1.4.2 Adhesive Safety Precautions

SECTION 23 07 00 Page 2

3.1.5 Welding

3.1.6 Pipes/Ducts/Equipment That Require Insulation

3.2 PIPE INSULATION SYSTEMS INSTALLATION

3.2.1 Pipe Insulation

3.2.1.1 General

3.2.1.2 Pipes Passing Through Walls, Roofs, and Floors

3.2.1.2.1 Penetrate Interior Walls

3.2.1.2.2 Penetrating Floors

3.2.1.2.3 Penetrating Waterproofed Floors

3.2.1.2.4 Penetrating Exterior Walls

3.2.1.2.5 Penetrating Roofs

3.2.1.2.6 Hot Water Pipes Supplying Lavatories or Other Similar

Heated Service

3.2.1.2.7 Domestic Cold Water Pipes Supplying Lavatories or

Other Similar Cooling Service

3.2.1.3 Pipes Passing Through Hangers

3.2.1.3.1 Horizontal Pipes Larger Than 50 mm 2 Inches at 16

Degrees C 60 Degrees F and Above

3.2.1.3.2 Horizontal Pipes Larger Than 50 mm 2 Inches and Below

16 Degrees C 60 Degrees F

3.2.1.3.3 Vertical Pipes

3.2.1.3.4 Inserts

3.2.1.4 Flexible Elastomeric Cellular Pipe Insulation

3.2.1.5 Pipes in High Abuse Areas

3.2.1.6 Pipe Insulation Material and Thickness

3.2.2 Aboveground Cold Pipelines

3.2.2.1 Insulation Material and Thickness

3.2.2.2 Factory or Field applied Jacket

3.2.2.3 Installing Insulation for Straight Runs Hot and Cold Pipe

3.2.2.3.1 Longitudinal Laps of the Jacket Material

3.2.2.3.2 Laps and Butt Strips

3.2.2.3.3 Factory Self-Sealing Lap Systems

3.2.2.3.4 Staples

3.2.2.3.5 Breaks and Punctures in the Jacket Material

3.2.2.3.6 Penetrations Such as Thermometers

3.2.2.3.7 Flexible Elastomeric Cellular Pipe Insulation

3.2.2.4 Insulation for Fittings and Accessories

3.2.2.5 Optional PVC Fitting Covers

3.2.3 Aboveground Hot Pipelines

3.2.3.1 General Requirements

3.2.3.2 Insulation for Fittings and Accessories

3.2.3.2.1 Precut or Preformed

3.2.3.2.2 Rigid Preformed

3.2.4 Piping Exposed to Weather

3.2.4.1 Aluminum Jacket

3.2.4.2 Insulation for Fittings

3.2.4.3 PVC Jacket

3.2.4.4 Stainless Steel Jackets

3.2.5 Below Ground Pipe Insulation

3.2.5.1 Type of Insulation

3.2.5.2 Installation of Below ground Pipe Insulation

3.3 DUCT INSULATION SYSTEMS INSTALLATION

3.3.1 Duct Insulation Minimum Thickness

3.3.2 Insulation and Vapor Retarder/Vapor Barrier for Cold Air Duct

3.3.2.1 Installation on Concealed Duct

3.3.2.2 Installation on Exposed Duct Work

3.3.3 Insulation for Warm Air Duct

3.3.3.1 Installation on Concealed Duct

3.3.3.2 Installation on Exposed Duct

SECTION 23 07 00 Page 3

3.3.4 Ducts Handling Air for Dual Purpose

3.3.5 Insulation for Evaporative Cooling Duct

3.3.6 Duct Test Holes

3.3.7 Duct Exposed to Weather

3.3.7.1 Installation

3.3.7.2 Round Duct

3.3.7.3 Fittings

3.3.7.4 Rectangular Ducts

3.3.8 Kitchen Exhaust Duct Insulation

3.4 EQUIPMENT INSULATION SYSTEMS INSTALLATION

3.4.1 General

3.4.2 Insulation for Cold Equipment

3.4.2.1 Insulation Type

3.4.2.2 Pump Insulation

3.4.2.3 Other Equipment

3.4.2.4 Vapor Retarder/Vapor Barrier

3.4.3 Insulation for Hot Equipment

3.4.3.1 Insulation

3.4.3.2 Insulation of Boiler Stack and Diesel Engine Exhaust Pipe

3.4.3.3 Insulation of Pumps

3.4.3.4 Other Equipment

3.4.4 Equipment Handling Dual Temperature Media

3.4.5 Equipment Exposed to Weather

3.4.5.1 Installation

3.4.5.2 Optional Panels

-- End of Section Table of Contents --

SECTION 23 07 00 Page 4

USACE / NAVFAC / AFCEC UFGS-23 07 00 (August 2024)

Preparing Activity: USACE Superseding UFGS-23 07 00 (February 2013)

UNIFIED FACILITIES GUIDE SPECIFICATIONS

References are in agreement with UMRL dated July 2025

SECTION 23 07 00

THERMAL INSULATION FOR MECHANICAL SYSTEMS

08/24

NOTE: This guide specification covers the requirements for field applied thermal insulation on HVAC and plumbing systems located within, on, under, and adjacent to buildings; above and below ground.

Adhere to UFC 1-300-02 Unified Facilities Guide Specifications (UFGS) Format Standard when editing this guide specification or preparing new project specification sections. Edit this guide specification for project specific requirements by adding, deleting, or revising text. For bracketed items, choose applicable item(s) or insert appropriate information.

Remove information and requirements not required in respective project, whether or not brackets are present.

Comments, suggestions and recommended changes for this guide specification are welcome and should be submitted as a Criteria Change Request (CCR) .

PART 1 GENERAL

NOTE: Show the following information on project drawings:

1. Areas where pipe insulation differs from the "Typical;"

2. Areas where ductwork is to be internally insulated;

3. Areas where metal jackets or 8-ply vapor barrier jacket are to be used on interior piping;

4. Pumps to be insulated and encased in 20 gauge

SECTION 23 07 00 Page 5 boxes; and

5. Heat exchange temperatures.

1.1 REFERENCES

NOTE: This paragraph is used to list the publications cited in the text of the guide specification. The publications are referred to in the text by basic designation only and listed in this paragraph by organization, designation, date, and title.

Use the Reference Wizard's Check Reference feature when you add a Reference Identifier (RID) outside of the Section's Reference Article to automatically place the reference in the Reference Article. Also use the Reference Wizard's Check Reference feature to update the issue dates.

References not used in the text will automatically be deleted from this section of the project specification when you choose to reconcile references in the publish print process.

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. At the discretion of the Government, the manufacturer of any material supplied will be required to furnish test reports pertaining to any of the tests necessary to assure compliance with the standard or standards referenced in this specification.

AMERICAN SOCIETY OF HEATING, REFRIGERATING AND AIR-CONDITIONING

ENGINEERS (ASHRAE)

ASHRAE 90.1 - IP (2019) Energy Standard for Buildings Except Low-Rise Residential Buildings

ASHRAE 90.1 - SI (2019) Energy Standard for Buildings Except Low-Rise Residential Buildings

ASHRAE 90.2 (2024; Errata 2024) Energy-Efficient Design of Low-Rise Residential Buildings

ASTM INTERNATIONAL (ASTM)

ASTM A240/A240M (2025a) Standard Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications

ASTM A580/A580M (2023) Standard Specification for Stainless Steel Wire

ASTM B209 (2014) Standard Specification for Aluminum and Aluminum-Alloy Sheet and Plate

SECTION 23 07 00 Page 6

ASTM B209M (2014) Standard Specification for Aluminum and Aluminum-Alloy Sheet and Plate (Metric)

ASTM C195 (2007; R 2024) Standard Specification for Mineral Fiber Thermal Insulating Cement

ASTM C450 (2008) Standard Practice for Fabrication of Thermal Insulating Fitting Covers for NPS Piping, and Vessel Lagging

ASTM C533 (2017; R 2023) Standard Specification for Calcium Silicate Block and Pipe Thermal Insulation

ASTM C534/C534M (2025) Standard Specification for Preformed Flexible Elastomeric Cellular Thermal Insulation in Sheet and Tubular Form

ASTM C547 (2022a) Standard Specification for Mineral Fiber Pipe Insulation

ASTM C552 (2022) Standard Specification for Cellular Glass Thermal Insulation

ASTM C553 (2024) Standard Specification for Mineral Fiber Blanket Thermal Insulation for Commercial and Industrial Applications

ASTM C585 (2010) Standard Practice for Inner and Outer Diameters of Thermal Insulation for Nominal Sizes of Pipe and Tubing

ASTM C591 (2022) Standard Specification for Unfaced Preformed Rigid Cellular Polyisocyanurate Thermal Insulation

ASTM C592 (2024) Standard Specification for Mineral Fiber Blanket Insulation and Blanket-Type Pipe Insulation (Metal-Mesh Covered) (Industrial Type)

ASTM C610 (2017; R 2023) Standard Specification for Molded Expanded Perlite Block and Pipe Thermal Insulation

ASTM C612 (2014; R 2019) Standard Specification for Mineral Fiber Block and Board Thermal Insulation

ASTM C647 (2008; R 2013) Properties and Tests of Mastics and Coating Finishes for Thermal Insulation

ASTM C755 (2019b) Standard Practice for Selection of Water Vapor Retarders for Thermal Insulation

SECTION 23 07 00 Page 7

ASTM C795 (2008; R 2023) Standard Specification for Thermal Insulation for Use in Contact with Austenitic Stainless Steel

ASTM C916 (2020) Standard Specification for Adhesives for Duct Thermal Insulation

ASTM C920 (2018; R 2024) Standard Specification for Elastomeric Joint Sealants

ASTM C921 (2010; R 2015) Standard Practice for Determining the Properties of Jacketing Materials for Thermal Insulation

ASTM C1126 (2024) Standard Specification for Faced or Unfaced Rigid Cellular Phenolic Thermal Insulation

ASTM C1136 (2023) Standard Specification for Flexible, Low Permeance Vapor Retarders for Thermal Insulation

ASTM C1290 (2016; R 2021) Standard Specification for Flexible Fibrous Glass Blanket Insulation Used to Externally Insulate HVAC Ducts

ASTM C1710 (2011) Standard Guide for Installation of Flexible Closed Cell Preformed Insulation in Tube and Sheet Form

ASTM D882 (2012) Tensile Properties of Thin Plastic Sheeting

ASTM D2863 (2019) Standard Test Method for Measuring the Minimum Oxygen Concentration to Support Candle-Like Combustion of Plastics (Oxygen Index)

ASTM D5590 (2017; R 2021) Standard Test Method for Determining the Resistance of Paint Films and Related Coatings to Fungal Defacement by Accelerated Four-Week Agar Plate Assay

ASTM E84 (2024) Standard Test Method for Surface Burning Characteristics of Building Materials

ASTM E96/E96M (2024a) Standard Test Methods for Gravimetric Determination of Water Vapor Transmission Rate of Materials

ASTM E2231 (2021) Standard Practice for Specimen Preparation and Mounting of Pipe and Duct Insulation Materials to Assess Surface Burning Characteristics

ASTM E2336 (2025) Standard Test Methods for Fire Resistive Grease Duct Enclosure Systems

SECTION 23 07 00 Page 8

CALIFORNIA DEPARTMENT OF PUBLIC HEALTH (CDPH)

CDPH SECTION 01350 (2017; Version 1.2) Standard Method for the Testing and Evaluation of Volatile Organic Chemical Emissions from Indoor Sources using Environmental Chambers

FM GLOBAL (FM)

FM APP GUIDE (updated on-line) Approval Guide https://www.approvalguide.com/

GREEN SEAL (GS)

GS-36 (2013) Adhesives for Commercial Use

INTERNATIONAL ORGANIZATION FOR STANDARDIZATION (ISO)

ISO 2758 (2014) Paper - Determination of Bursting Strength

MANUFACTURERS STANDARDIZATION SOCIETY OF THE VALVE AND FITTINGS

INDUSTRY (MSS)

MSS SP-58 (2018) Pipe Hangers and Supports - Materials, Design and Manufacture, Selection, Application, and Installation

MIDWEST INSULATION CONTRACTORS ASSOCIATION (MICA)

MICA Insulation Stds (8th Ed) National Commercial & Industrial Insulation Standards

NATIONAL FIRE PROTECTION ASSOCIATION (NFPA)

NFPA 90A (2024) Standard for the Installation of Air Conditioning and Ventilating Systems

NFPA 90B (2024) Standard for the Installation of Warm Air Heating and Air Conditioning Systems

NFPA 96 (2024) Standard for Ventilation Control and Fire Protection of Commercial Cooking Operations

SCIENTIFIC CERTIFICATION SYSTEMS (SCS)

SCS SCS Global Services (SCS) Indoor Advantage

SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT (SCAQMD)

SCAQMD Rule 1168 (2022) Adhesive and Sealant Applications

TECHNICAL ASSOCIATION OF THE PULP AND PAPER INDUSTRY (TAPPI)

TAPPI T403 OM (2022) Bursting Strength of Paper

SECTION 23 07 00 Page 9

U.S. DEPARTMENT OF DEFENSE (DOD)

MIL-A-3316 (1987; Rev C; Am 2 1990) Adhesives, Fire-Resistant, Thermal Insulation

MIL-A-24179 (1969; Rev A; Am 2 1980; Notice 1 1987;

Notice 2 2020) Adhesive, Flexible Unicellular-Plastic Thermal Insulation

MIL-PRF-19565 (1988; Rev C) Coating Compounds, Thermal Insulation, Fire- and Water-Resistant, Vapor-Barrier

UL SOLUTIONS (UL)

UL 94 (2023; Reprint Jan 2024) UL Standard for Safety Tests for Flammability of Plastic Materials for Parts in Devices and Appliances

UL 723 (2018; Reprint Jun 2025) UL Standard for Safety Test for Surface Burning Characteristics of Building Materials

UL 2818 (2022) GREENGUARD Certification Program For Chemical Emissions For Building Materials, Finishes And Furnishings

1.2 SYSTEM DESCRIPTION

NOTE: This guide specification is to be used for field applied insulation on mechanical systems;

interior and exterior, above and below ground.

Insulation for energy distribution systems covered by Sections 33 61 13 PRE-ENGINEERED UNDERGROUND HEAT

DISTRIBUTION SYSTEM, 33 63 13.19 CONCRETE TRENCH

HYDRONIC AND STEAM ENERGY DISTRIBUTION, 33 61 13.13

PREFABRICATED UNDERGROUND HYDRONIC ENERGY

DISTRIBUTION, and 33 60 02 ABOVEGROUND HEAT DISTRIBUTION SYSTEM, are not within the scope of this guide specification. Heating, air conditioning, and evaporative cooling duct;

equipment; and piping are included.

Pipe insulation covered in this specification is valid for between minus 34 and plus 204 degrees C minus 30 and plus 400 degrees F . Equipment insulation covered in this specification is valid for between minus 34 and plus 982 degrees C minus 30 and plus 1800 degrees F .

1.2.1 General

Provide field-applied insulation and accessories on mechanical systems as specified herein; factory-applied insulation is specified under the piping, duct or equipment to be insulated. Provide insulation of heat distribution systems and chilled water systems outside of buildings as

SECTION 23 07 00 Page 10 specified in Section 33 61 13 PRE-ENGINEERED UNDERGROUND HEAT DISTRIBUTION SYSTEM, Section 33 63 13.19 CONCRETE TRENCH HYDRONIC AND STEAM ENERGY DISTRIBUTION, Section 33 60 02 ABOVEGROUND HEAT DISTRIBUTION SYSTEM, and Section 33 61 13.13 PREFABRICATED UNDERGROUND HYDRONIC ENERGY DISTRIBUTION. Provide field applied insulation materials required for use on Government-furnished items as listed in the SPECIAL CONTRACT

REQUIREMENTS.

1.3 SUBMITTALS

NOTE: Review submittal description (SD) definitions in Section 01 33 00 SUBMITTAL PROCEDURES and edit the following list, and corresponding submittal items in the text, to reflect only the submittals required for the project. The Guide Specification technical editors have classified those items that require Government approval, due to their complexity or criticality, with a "G." Generally, other submittal items can be reviewed by the Contractor's Quality Control System. Only add a “G” to an item, if the submittal is sufficiently important or complex in context of the project.

For Army projects, fill in the empty brackets following the "G" classification, with a code of up to three characters to indicate the approving authority. Codes for Army projects using the Resident Management System (RMS) are: "AE" for Architect-Engineer; "DO" for District Office (Engineering Division or other organization in the District Office); "AO" for Area Office; "RO" for Resident Office; and "PO" for Project Office. Codes following the "G" typically are not used for Navy and Air Force projects.

The "S" classification indicates submittals required as proof of compliance for sustainability Guiding Principles Validation or Third Party Certification and as described in Section 01 33 00 SUBMITTAL

PROCEDURES.

In SD-04, Designer will exclude ductwork insulation display samples for small, simple projects where the extent of duct insulation is not likely to cause a problem of enforcement with the requirements of the specification.

Government approval is required for submittals with a "G" or "S" classification. Submittals not having a "G" or "S" classification are for Contractor Quality Control approval. Submittals not having a "G" or "S" classification are for information only. When used, a code following the "G" classification identifies the office that will review the submittal for the Government. Submit the following in accordance with Section

01 33 00 SUBMITTAL PROCEDURES:

Submit the three SD types, SD-02 Shop Drawings, SD-03 Product Data, and SD-08 Manufacturer's Instructions at the same time for each system.

SECTION 23 07 00 Page 11

SD-02 Shop Drawings

NOTE: For NAVFAC LANT projects, delete the requirement for this SD-02 Shop Drawing Submittal.

MICA Plates ; G, [_____]

Pipe Insulation Systems and Associated Accessories

Duct Insulation Systems and Associated Accessories

Equipment Insulation Systems and Associated Accessories

Recycled content for insulation materials ; S

SD-03 Product Data

Pipe Insulation Systems ; G, [_____]

Duct Insulation Systems ; G, [_____]

Equipment Insulation Systems ; G, [_____]

SD-04 Samples

Thermal Insulation ; G, [_____]

Display Samples ; G, [_____]

SD-07 Certificates

Indoor air quality for adhesives ; S

SD-08 Manufacturer's Instructions

Pipe Insulation Systems ; G, [_____]

Duct Insulation Systems ; G, [_____]

Equipment Insulation Systems ; G, [_____]

1.4 CERTIFICATIONS

1.4.1 Adhesives and Sealants

Provide products certified to meet indoor air quality requirements by UL 2818 (Greenguard) Gold, SCS Global Services Indoor Advantage Gold or provide certification or validation by other third-party programs that products meet the requirements of this Section. Provide current product certification documentation from certification body. When product does not have certification, provide validation that product meets the indoor air quality product requirements cited herein.

SECTION 23 07 00 Page 12

1.5 QUALITY ASSURANCE

1.5.1 Installer Qualification

Qualified installers must have successfully completed three or more similar type jobs within the last 5 years.

1.6 DELIVERY, STORAGE, AND HANDLING

Deliver materials in the manufacturer's unopened containers. Protect materials delivered and placed in storage from weather, humidity, dirt, dust and other contaminants. The Contracting Officer may reject insulation material and supplies that become dirty, dusty, wet, or contaminated by some other means. Attach manufacturer's stamp or label giving the name of the manufacturer and brand, and a description of the material, date codes, and approximate shelf life (if applicable) to packages or standard containers of insulation, jacket material, cements, adhesives, and coatings delivered for use, and samples required for approval. Insulation packages and containers must be asbestos free.

PART 2 PRODUCTS

2.1 STANDARD PRODUCTS

Provide materials which are the standard products of manufacturers regularly engaged in the manufacture of such products and that essentially duplicate items that have been in satisfactory use for at least 2 years prior to bid opening and is an acceptable product per this specification.

Submit a complete list of materials, including manufacturer's descriptive technical literature, performance data, catalog cuts, and installation instructions. Include the product number, k-value, thickness and furnished accessories including adhesives, sealants and jackets for each mechanical system requiring insulation. The product data must be copyrighted, have an identifying or publication number, and have been published prior to the issuance date of this solicitation. Submit materials furnished under this section together in a booklet and in conjunction with the MICA plates booklet (SD-02). Annotate the product data to indicate which MICA plate is applicable .

2.1.1 Insulation System

Provide insulation systems in accordance with the approved MICA National Insulation Standards plates as supplemented by this specification.

Provide field-applied insulation for heating, ventilating, and cooling (HVAC) air distribution systems and piping systems that are located within, on, under, and adjacent to buildings; and for plumbing systems.

Provide CFC and HCFC free insulation.

2.1.2 Surface Burning Characteristics

Unless otherwise specified, insulation must have a maximum flame spread index of 25 and a maximum smoke developed index of 50 when tested in accordance with ASTM E84. Determine flame spread, and smoke developed indexes, by ASTM E84 or UL 723 . Test insulation in the same density and installed thickness as the material to be used in the actual construction. Prepare and mount test specimens according to ASTM E2231.

SECTION 23 07 00 Page 13

2.2 MATERIALS

NOTE: Tables 1, 2, 3, 4, and 5 are not inclusive of systems requiring insulation. Edit, modify, and add to the information contained in tables as required for your project requiring insulation. These tables must become a part of project specification.

For cryogenic equipment handling media between minus 34 and minus 18 degrees C minus30 and minus one degree F , use elastomeric closed cell or cellular glass.

Table 7 is primarily used for personnel safety where stacks or pipes are within reach, or if stacks or pipes run through conditioned spaces where heat losses may increase building energy usage.

ASHRAE 90.2 is for low-rise residential building.

ASHRAE 90.1 is for all buildings except low-rise residential buildings. Low-rise building has one or two stories without elevators. High-rise building has multistory with elevators.

Provide insulation that meets or exceed the requirements of ASHRAE 90.1 - SI ASHRAE 90.1 - IP [ ASHRAE 90.2 ]. Ensure insulation exterior is cleanable, grease resistant, non-flaking and non-peeling. Provide compatible materials that do not contribute to corrosion, soften, or otherwise attack surfaces to which applied in either wet or dry state.

Use materials on stainless steel surfaces meeting ASTM C795 requirements.

Do not use calcium silicate on chilled or cold water systems. Use asbestos free materials. Provide product recognized under UL 94 (if containing plastic) and listed in FM APP GUIDE.

2.2.1 Adhesives

Provide non-aerosol adhesive products used on the interior of the building (defined as inside of the weatherproofing system) that meet either emissions requirements of CDPH SECTION 01350 (limit requirements for either office or classroom spaces regardless of space type) or VOC content requirements of SCAQMD Rule 1168 (HVAC duct sealants must meet limit requirements of "Other" category within SCAQMD Rule 1168 sealants table).

Provide aerosol adhesives used on the interior of the building that meet either emissions requirements of CDPH SECTION 01350 (use the office or classroom requirements, regardless of space type) or VOC content requirements of GS-36. Provide certification or validation of indoor air quality for adhesives .

2.2.1.1 Acoustical Lining Insulation Adhesive

Provide a nonflammable, fire-resistant adhesive conforming to ASTM C916, Type I.

2.2.1.2 Mineral Fiber Insulation Cement

Provide cement in accordance with ASTM C195.

SECTION 23 07 00 Page 14

2.2.1.3 Lagging Adhesive

Lagging is the material used for thermal insulation , especially around a cylindrical object. This may include the insulation as well as the cloth/material covering the insulation. [To resist mold/mildew, use lagging adhesive meeting ASTM D5590 with 0 growth rating. ]Provide nonflammable and fire-resistant lagging adhesives that have a maximum flame spread index of 25 and a maximum smoke developed index of 50 when tested in accordance with ASTM E84. Ensure adhesive is MIL-A-3316 , Class 1, pigmented [white] [red] and suitable, as listed by the manufacturer,for bonding fibrous glass cloth to faced and unfaced fibrous glass insulation board; for bonding cotton brattice cloth to faced and unfaced fibrous glass insulation board; for sealing edges of and bonding glass tape to joints of fibrous glass board; for bonding lagging cloth to thermal insulation; or Class 2 for attaching fibrous glass insulation to metal surfaces. Apply lagging adhesives in strict accordance with the manufacturer's recommendations for pipe and duct insulation.

2.2.1.4 Contact Adhesive

Adhesives may be any of, but not limited to, the neoprene based, rubber based, or elastomeric type that have a maximum flame spread index of 25 and a maximum smoke developed index of 50 when tested in accordance with ASTM E84. Ensure adhesive does not adversely affect, initially or in service, the insulation to which it is applied, nor cause any corrosive effect on metal to which it is applied. Ensure that any solvent dispersing medium or volatile component of the adhesive has no objectionable odor and does not contain any benzene or carbon tetrachloride. Ensure dried adhesive does not emit nauseous, irritating, or toxic volatile matters or aerosols when the adhesive is heated to any temperature up to 100 degrees C 212 degrees F . The dried adhesive must be nonflammable and fire resistant. Flexible Elastomeric Adhesive: Comply with MIL-A-24179 , Type II, Class I. Provide product listed in FM APP GUIDE.

2.2.2 Caulking

ASTM C920, Type S, Grade NS, Class 25, Use A.

2.2.3 Corner Angles

Nominal 0.406 mm 0.016 inch aluminum 25 by 25 mm 1 by 1 inch with factory applied kraft backing. Aluminum must be ASTM B209M ASTM B209, Alloy 3003, 3105, or 5005.

2.2.4 Fittings

Fabricated Fittings are the prefabricated fittings for flexible elastomeric pipe insulation systems in accordance with ASTM C1710.

Together with the flexible elastomeric tubes, they provide complete system integrity for retarding heat gain and controlling condensation drip from chilled-water and refrigeration systems. Flexible elastomeric, fabricated fittings provide thermal protection (0.25 k) and condensation resistance (0.05 Water Vapor Transmission factor). For satisfactory performance, use properly installed protective vapor retarder/barriers and vapor stops on high relative humidity and below ambient temperature applications to reduce movement of moisture through or around the insulation to the colder interior surface.

SECTION 23 07 00 Page 15

2.2.5 Finishing Cement

ASTM C450: Mineral fiber hydraulic-setting thermal insulating and finishing cement. All cements that may come in contact with Austenitic stainless steel must comply with ASTM C795.

2.2.6 Fibrous Glass Cloth and Glass Tape

Provide fibrous glass cloth, with 20X20 maximum mesh size, and glass tape with maximum flame spread index of 25 and a maximum smoke developed index of 50 when tested in accordance with ASTM E84. Provide tape consisting of 100 mm 4 inch wide rolls. Provide Class 3 tape that is 0.15 kg/square m

4.5 ounces/square yard . Elastomeric Foam Tape: Black vapor-retarder foam tape with acrylic adhesive containing an anti-microbial additive.

2.2.7 Staples

NOTE: For cold applications (cold water, chilled water, and brine systems), staples and tacks are not permitted to be installed on vapor retarder/barrier jackets or fitting covers.

Monel is a nickel rich alloy that has high strength, high ductility, and excellent resistance to corrosion.

Outward clinching type [monel] [Type 304 or 316 stainless steel].

2.2.8 Jackets

NOTE: The purpose of jacketing insulated pipes and vessels is to protect the vapor retarder system and the insulation. Protective jacketing is designed to be installed over the vapor retarder/vapor barrier and insulation to prevent weather and abrasion damage. The protective jacketing must be installed independently and in addition to any factory or field applied vapor retarder.

VAPOR BARRIER/VAPOR RETARDER. To determine which system is required, apply the following criteria:

On ducts, piping and equipment operating below [select a temperature that is at least equal to the dry bulb temperature's median of extreme highs from the region's weather data] or located outside must be equipped with a vapor barrier. Whereas ducts, pipes and equipment that are located inside and that always operate above [use the same temperature selected earlier in this paragraph which is based on the region's median of extreme highs dry bulb temperature] must be installed with a vapor retarder where required as stated in "Vapor Retarder Required."

A vapor barrier should be installed where there is a possiblity of condensation. Therefore, the designer

SECTION 23 07 00 Page 16 must require a vapor barrier where the temperature in the system may be below the ambient temperature.

If the application operates at times above the selected temperature and other times below the selected temperature, the application must be equipped with a vapor barrier.

2.2.8.1 Aluminum Jackets

Provide aluminum jackets consisting of corrugated, embossed or smooth sheet, 0.406 mm 0.016 inch nominal thickness; ASTM B209M ASTM B209, Temper H14, Temper H16, Alloy 3003, 5005, or 3105. Do not use corrugated aluminum jacket outdoors. Aluminum jacket securing bands must be Type 304 stainless steel, 0.396 mm 0.015 inch thick, 13 mm 1/2 inch wide for pipe under 300 mm 12 inch diameter and 19 mm 3/4 inch wide for pipe over 300 mm 12 inch and larger diameter . Aluminum jacket circumferential seam bands must be 50.8 by 0.406 mm 2 by 0.016 inch aluminum matching jacket material. Ensure bands for insulation below ground are 19 by 0.508 mm 3/4 by 0.020 inch thick stainless steel, or fiberglass reinforced tape. The jacket may, at the option of the Contractor, be provided with a factory fabricated Pittsburgh or "Z" type longitudinal joint. When the "Z" joint is used, use bands at the circumferential joints that are designed by the manufacturer to seal the joints and hold the jacket in place.

2.2.8.2 Polyvinyl Chloride (PVC) Jackets

Polyvinyl chloride (PVC) jacket and fitting covers must have high impact strength, ultraviolet (UV) resistant rating or treatment and moderate chemical resistance. The minimum thickness for a Standard jacket is 0.508mm0.020 inch and where high abuse resistance is required use Heavy Duty PVC jacket 0.762 mm 0.030 inch . Standard PVC fittings will have an initial core thickness (before thermoforming) of 0.635 mm 0.025 inch and heavy duty fittings will have an initial core thickness of 0.762 mm 0.030 inch .

2.2.8.3 Vapor Barrier/Weatherproofing Jacket

NOTE: Do not provide this material on Navy projects. Only material greater than 8 ply is to be used for Army projects.

Provide laminated self-adhesive vapor barrier/weatherproofing jacket, greater than 3 plies standard grade, silver, white, black and embossed or greater than 8 ply (minimum 0.072 mm 2.9 mils adhesive); with less than

0.02 permeability when tested in accordance with ASTM E96/E96M, using the water transmission rate test method; heavy duty, white or natural; and UV resistant. Flexible Elastomeric exterior foam with factory applied, UV Jacket made with a cold weather acrylic adhesive. Construction of laminate designed to provide UV resistance, high puncture, tear resistance and excellent Water Vapor Transmission (WVT) rate.

2.2.8.4 Vapor Barrier/Vapor Retarder

NOTE: Where there is a possibility of condensation install a vapor barrier. Therefore, the designer

SECTION 23 07 00 Page 17 must require a vapor barrier where the temperature in the system may be below the ambient temperature.

If the application operates at times above the selected temperature and other times below the selected temperature, the application must be equipped with a vapor barrier.

Apply the following criteria to determine which system is required.

NOTE: Fill in the brackets a temperature that is at least equal to the dry bulb temperature’s median of extreme highs from the region’s weather data

a. On ducts, equip piping and equipment operating below [_____] degrees C degrees F or located outside with a vapor barrier.

NOTE: Use the same temperature selected earlier in this paragraph which is based on the region’s median of extreme highs dry bulb temperature

b. Install ducts, pipes and equipment that are located inside and that always operate above [_____] degrees C degrees F with a vapor retarder where required as stated in paragraph VAPOR RETARDER REQUIRED.

2.2.9 Vapor Retarder Required

NOTE: The functions of a vapor retarder/vapor barrier are to keep out water, water vapor, and to prevent water vapor infiltration, in order to keep the insulation dry. Type I is a vapor barrier for use over insulation on pipes, ducts, or equipment operating at temperatures below ambient at least part of the time or wherever a vapor barrier is required. Type II vapor retarder is water vapor permeable and for use over pipes, ducts, or equipment operating above ambient temperatures or wherever a vapor barrier is not required.

ASTM C921, Type I, minimum puncture resistance 50 Beach units on all surfaces except concealed ductwork, where a minimum puncture resistance of 25 Beach units is acceptable. Minimum tensile strength, 6.1 N/mm 35 pounds/inch width. ASTM C921, Type II, minimum puncture resistance 25 Beach units, tensile strength minimum 3.5 N/mm 20 pounds/inch width. Use jackets on insulation exposed in finished areas that have white finish suitable for painting without sizing. Based on the application, insulation materials that require manufacturer or fabricator applied pipe insulation jackets are cellular glass, when all joints are sealed with a vapor barrier mastic, and mineral fiber. Ensure all non-metallic jackets have a maximum flame spread index of 25 and a maximum smoke developed index of 50 when tested in accordance with ASTM E84. Flexible elastomerics require (in addition to vapor barrier skin) vapor retarder jacketing for high relative humidity and below ambient temperature

SECTION 23 07 00 Page 18 applications.

2.2.9.1 White Vapor Retarder All Service Jacket (ASJ)

ASJ is for use on hot/cold pipes, ducts, or equipment indoors or outdoors if covered by a suitable protective jacket. Provide product which meets all physical property and performance requirements of ASTM C1136, Type I, except a minimum burst strength of 585 kPa 85 psi . ASTM D2863 Limited Oxygen Index (LOI) is a minimum of 31.

In addition, do not use paper or other moisture-sensitive material for the outer exposed surface or the inner-most surface contacting the insulation. Ensure the outer exposed surface is white and has an emittance no less than 0.80.

2.2.9.2 Vapor Retarder/Vapor Barrier Mastic Coatings

2.2.9.2.1 Vapor Barrier

The vapor barrier must be self adhesive (minimum 0.05 mm 2 mils adhesive,

0.075 mm 3 mils embossed) greater than 3 plies standard grade, silver, white, black and embossed white jacket for use on hot/cold pipes. Ensure permeability is less than 0.02 when tested in accordance with ASTM E96/E96M.

Provide products meeting UL 723 or ASTM E84 flame and smoke requirements and that are UV resistant.

2.2.9.2.2 Vapor Retarder

Provide fire and water resistant vapor retarder coating appropriately selected for either outdoor or indoor service. Color must be white.

Ensure the water vapor permeance of the compound is in accordance with ASTM C755. Provide nonflammable, fire resistant coating. [To resist mold/mildew, provide coating meeting ASTM D5590 with 0 growth rating.

]Ensure coating meets MIL-PRF-19565 Type II (if selected for indoor service) and is Qualified Products Database listed. Determine all other application and service properties pursuant to ASTM C647.

2.2.9.3 Laminated Film Vapor Retarder

ASTM C1136, Type I, maximum moisture vapor transmission 0.02 perms, minimum puncture resistance 50 Beach units on all surfaces except concealed ductwork; where Type II, maximum moisture vapor transmission

0.02 perms, a minimum puncture resistance of 25 Beach units is acceptable. Provide vapor retarder with a maximum flame spread index of 25 and a maximum smoke developed index of 50 when tested in accordance with ASTM E84. Flexible Elastomeric exterior foam with factory applied UV Jacket. Construction of laminate designed to provide UV resistance, high puncture, tear resistance and an excellent WVT rate.

2.2.9.4 Polyvinylidene Chloride (PVDC) Film Vapor Retarder

Provide PVDC film vapor retarder with a maximum moisture vapor transmission of 0.02 perms, minimum puncture resistance of 150 Beach units, a minimum tensile strength in any direction of 5.3 kN/m 30 lb/inch when tested in accordance with ASTM D882, and a maximum flame spread index of 25 and a maximum smoke developed index of 50 when tested in accordance with ASTM E84.

SECTION 23 07 00 Page 19

2.2.9.5 Polyvinylidene Chloride Vapor Retarder Adhesive Tape

Requirements must meet the same as specified for Laminated Film Vapor Retarder above.

2.2.9.6 Vapor Barrier/Weather Barrier

Ensure the vapor barrier is greater than 3 ply self adhesive laminate -white vapor barrier jacket- superior performance (permeability less than

0.02 when tested in accordance with ASTM E96/E96M). Provide vapor barrier meeting UL 723 or ASTM E84 25 flame and 50 smoke requirements; and UV resistant. Minimum burst strength 1.3 MPa 185 psi in accordance with [ TAPPI T403 OM ] [ ISO 2758 ]. Tensile strength 0.12 kg/m 68 lb/inch width (PSTC-1000). Provide tape as specified for laminated film vapor barrier above.

2.2.10 Vapor Retarder Not Required

ASTM C921, Type II, Class D, minimum puncture resistance 50 Beach units on all surfaces except ductwork, where Type IV, maximum moisture vapor transmission 0.10, a minimum puncture resistance of 25 Beach units is acceptable. Provide jacket with a maximum flame spread index of 25 and a maximum smoke developed index of 50 when tested in accordance with ASTM E84.

2.2.11 Wire

Soft annealed ASTM A580/A580M Type 302, 304 or 316 stainless steel, 16 or 18 gauge.

2.2.12 Insulation Bands

Provide 13 mm 1/2 inch wide; 26 gauge stainless steel insulation bands.

2.2.13 Sealants

Choose sealants from the butyl polymer type, the styrene-butadiene rubber type, or the butyl type of sealants. Provide sealants with a maximum permeance of 0.02 perms based on Procedure B for ASTM E96/E96M, and a maximum flame spread index of 25 and a maximum smoke developed index of 50 when tested in accordance with ASTM E84.

2.3 PIPE INSULATION SYSTEMS

NOTE: Where the temperature of cold water entering a building is below the average dew point of the indoor ambient air or below 15 degrees C 60 degrees F , and where condensate drip will cause damage or create a hazard, the piping should be insulated to limit or minimize condensation and a vapor barrier added per manufacturer's recommendations, if needed, whether piping is above or below ceilings.

Insulation that may absorb moisture will see a reduction in effectiveness even with a slight amount of infiltration. Moisture on the interior of certain metal jackets may lead to corrosion and pitting.

Flexible elastomeric and cellular glass are very

SECTION 23 07 00 Page 20 suitable for chilled water applications. Calcium silicate can not be used on chilled or cold water systems. Minimum thickness recommended for cellular glass insulation is 40 mm 1.5 inches . The reason is that the breakage rate during shipment of 25 mm 1 inch thick cellular insulation is too high to be economical. Design the insulation thickness based on worst case ambient conditions, such as a humid environment. Vapor Barrier Jacket for elastomeric and cellular glass are very suitable for chilled water.

For NAVFAC LANT projects, delete the option of 13 mm 1/2 inch from line 4 of the following paragraph.

ASHRAE 90.2 is for low-rise residential building.

ASHRAE 90.1 is for all buildings except low-rise residential buildings. Low-rise building has one or two stories without elevators. High-rise building has multistory with elevators.

Conform insulation materials to Table 1 and minimum insulation thickness as listed in Table 2 and meet or exceed the requirements of ASHRAE 90.1 - SI ASHRAE 90.1 - IP [ ASHRAE 90.2 ]. Limit pipe insulation materials to those listed herein and meeting the following requirements:

2.3.1 Recycled Materials

Provide insulation materials containing the following minimum percentage of recycled material content by weight:

Rock Wool: 75 percent slag of weight Fiberglass: 20 percent glass cullet Rigid Foam: 9 percent recovered material Phenolic Rigid Foam: 9 percent recovered material

Provide data identifying percentage of recycled content for insulation materials .

2.3.2 Aboveground Cold Pipeline ( -34 to 16 deg. C -30 to 60 deg. F )

Provide insulation for outdoor, indoor, exposed or concealed applications, as follows:

2.3.2.1 Cellular Glass

ASTM C552, Type II, and Type III. Supply the insulation from the fabricator with (paragraph WHITE VAPOR RETARDER ALL SERVICE JACKET (ASJ)) ASJ vapor retarder and installed with all longitudinal overlaps sealed and all circumferential joints ASJ taped or supply the insulation unfaced from the fabricator and install with all longitudinal and circumferential joints sealed with vapor barrier mastic.

2.3.2.2 Flexible Elastomeric Cellular Insulation

Closed-cell, foam- or expanded-rubber materials containing anti-microbial additive, complying with ASTM C534/C534M, Grade 1, Type I or II. Type I, Grade 1 for tubular materials. Type II, Grade 1, for sheet materials.

SECTION 23 07 00 Page 21

Ensure Type I and II have vapor retarder/vapor barrier skin on one or both sides of the insulation, and require an additional exterior vapor retarder covering for high relative humidity and below ambient temperature applications.

2.3.2.3 Polyisocyanurate Insulation

ASTM C591, Type I. Polyisocyanurate insulation may only be used on systems operating at temperatures not to exceed 60 degrees C 140 degrees F .

Supply the insulation with a factory applied vapor retarder/barrier that complies with Section 23 07 00 THERMAL INSULATION FOR MECHANICAL SYSTEMS.

The insulation and all covering must pass the flame spread index of 25 and the smoke developed index of 50 when tested in accordance with ASTM E84.

2.3.3 Aboveground Hot Pipeline (Above 16 deg. C 60 deg. F )

Provide insulation for outdoor, indoor, exposed or concealed applications meeting the following requirements. Supply the insulation with manufacturer's recommended factory-applied jacket/vapor barrier.

2.3.3.1 Mineral Fiber

ASTM C547, Types I, II or III, supply the insulation with manufacturer's recommended factory-applied jacket.

2.3.3.2 Calcium Silicate

ASTM C533, Type I indoor only, or outdoors above 121 degrees C 250 degrees F pipe temperature. Supply insulation with the manufacturer's recommended factory-applied jacket/vapor barrier.

2.3.3.3 Cellular Glass

ASTM C552, Type II and Type III. Supply the insulation with manufacturer's recommended factory-applied jacket.

2.3.3.4 Flexible Elastomeric Cellular Insulation

Closed-cell, foam- or expanded-rubber materials containing anti-microbial additive, complying with ASTM C534/C534M, Grade 1, Type I or II to 105 degrees C 220 degrees F service. Type I for tubular materials. Type II for sheet materials.

2.3.3.5 Phenolic Insulation

ASTM C1126 Type III to 121 degrees C 250 degrees F service must comply with ASTM C795. Supply the insulation with manufacturer's recommended factory-applied jacket/vapor barrier.

2.3.3.6 Perlite Insulation

ASTM C610

2.3.3.7 Polyisocyanurate Insulation

ASTM C591, Type I. Supply the insulation with a factory applied vapor retarder/barrier that complies with Section 23 07 00 THERMAL INSULATION FOR MECHANICAL SYSTEMS. The insulation and all covering must pass the flame spread index of 25 and the smoke developed index of 50 when tested

SECTION 23 07 00 Page 22 in accordance with ASTM E84.

2.3.4 Aboveground Dual Temperature Pipeline

NOTE: The use of multiple layered systems, i.e., a flexible form of insulation, surrounded by a rigid form and sealed with mastics, sealants and vapor retarders/vapor barrier, may provide the most advantageous form of insulation system for this piping configuration. This is due to the pipe expansion and contraction associated with the change from hot to cold temperatures.

Select insulation for use over a dual temperature pipeline system (Outdoor, Indoor - Exposed or Concealed) in accordance with the most limiting/restrictive case. Find an allowable material from paragraph PIPE INSULATION MATERIALS and determine the required thickness from the most restrictive case. Use the thickness listed in paragraphs INSULATION THICKNESS for cold & hot pipe applications.

2.3.5 Below-ground Pipeline Insulation

For below-ground pipeline insulation, use cellular glass, ASTM C552, type

II.

2.4 DUCT INSULATION SYSTEMS

NOTE: For NAVFAC ML projects, delete option of the following paragraph.

2.4.1 Factory Applied Insulation

Provide factory-applied [ ASTM C552, cellular glass thermal] [ ASTM C534/C534M Grade 1, Type II, flexible elastomeric closed cell] insulation according to manufacturer's recommendations for insulation with insulation manufacturer's standard reinforced fire-retardant vapor barrier[, with identification of installed thermal resistance (R) value and out-of-package R value].

2.4.2 Field Applied Insulation

2.4.2.1 General

NOTE: ASHRAE 90.2 is for low-rise residential building. ASHRAE 90.1 is for all buildings except low-rise residential buildings. Low-rise building has one or two stories without elevators. High-rise building has multistory with elevators.

Calculate the minimum thickness in accordance with [ ASHRAE 90.2 ]

ASHRAE 90.1 - SI ASHRAE 90.1 - IP .

SECTION 23 07 00 Page 23

2.4.3 Rigid Insulation

Mineral-Fiber Board Insulation: Mineral or glass fibers bonded with a thermosetting resin. Comply with ASTM C612, Type IA or Type IB; 3.0 pcf.

Provide insulation with [factory applied ASJ][and][factory-applied FSK] jacket. Minimum thickness in accordance with ASHRAE 90.1 - SI ASHRAE 90.1

- IP [ASHRAE 90.2][Tables 3 and 4]

2.4.4 Blanket Insulation

NOTE: For NAVFAC ML, delete this paragraph.

Mineral-Fiber Blanket Insulation: Mineral or glass fibers bonded with a thermosetting resin. Comply with ASTM C553, Type II and ASTM C1290, Type III with factory-applied FSK jacket; [3/4][1.5] pcf. Minimum thickness in accordance with ASHRAE 90.1 - SI ASHRAE 90.1 - IP [ASHRAE 90.2][Tables 3 and 4].

2.4.5 Kitchen Exhaust Ductwork Insulation

NOTE: If kitchen exhaust hood has outside air connection to cold outdoor, provide vapor barrier for outside air connection to prevent dissolution of calcium silicate.

Ensure insulation thickness is a minimum of 50 mm 2 inches , blocks or boards, either mineral fiber conforming to ASTM C612, Class 5, 320 kg/m3 20 pcf average [or calcium silicate conforming to ASTM C533, Type II.

Provide vapor barrier for outside air connection to kitchen exhaust hood]. Provide enclosure materials and grease duct enclosure systems which meet testing requirements of ASTM E2336 for noncombustibility, fire resistance, durability, internal fire, and fire-engulfment with a through-penetration fire stop.

2.4.6 Acoustical Duct Lining

2.4.6.1 General

For ductwork indicated or specified in Section 23 30 00 HVAC AIR DISTRIBUTION to be acoustically lined, provide external insulation in accordance with this specification section and in addition to the acoustical duct lining if R-value would not be met as required in Table 3 and 4. The installation of internal acoustical duct insulation is prohibited.

2.4.6.2 Duct Liner

Flexible Elastomeric Acoustical and Conformable Duct Liner Materials:

Flexible Elastomeric Thermal, Acoustical and Conformable Insulation Compliance with ASTM C534/C534M Grade 1, Type II; and NFPA 90A or NFPA 90B as applicable.

SECTION 23 07 00 Page 24

2.4.7 Duct Insulation Jackets

2.4.7.1 All-Purpose Jacket

Provide insulation with insulation manufacturer's standard reinforced fire-retardant jacket with or without integral vapor barrier as required by the service. In exposed locations, provide jacket with a white surface.

2.4.7.2 Metal Jackets

2.4.7.2.1 Aluminum Jackets

ASTM B209M ASTM B209, Temper H14, minimum thickness of 27 gauge ( 0.41 mm

0.016 inch ), with factory-applied polyethylene and kraft paper moisture barrier on inside surface. Provide smooth surface jackets for jacket outside dimension 200 mm 8 inches and larger.