ASTM C1534-02 - 10.7.2002
 
1. Scope

1.1 This specification covers the composition, dimensions, and physical properties of flexible unfaced foam sheet, used to insulate interior surfaces of HVAC ducts, plenums and equipment used for the distribution of conditioned air with a temperature of up to 250°F (121°C).

1.2 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are in SI, and are for information only.

1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory requirements prior to use.

 
2. Referenced Documents

C1045-19(2026)

Standard Practice for Calculating Thermal Transmission Properties Under Steady-State Conditions

C423-23e1

Standard Test Method for Sound Absorption and Sound Absorption Coefficients by the Reverberation Room Method (Includes all amendments and changes 8/9/2024).

C390-08(2024)

Standard Practice for Sampling and Acceptance of Thermal Insulation Lots

C209-20(2026)

Standard Test Methods for Cellulosic Fiber Insulating Board

C177-19(2026)

Standard Test Method for Steady-State Heat Flux Measurements and Thermal Transmission Properties by Means of the Guarded-Hot-Plate Apparatus

C665-24

Standard Specification for Mineral-Fiber Blanket Thermal Insulation for Light Frame Construction and Manufactured Housing

C634-22

Standard Terminology Relating to Building and Environmental Acoustics

C518-21

Standard Test Method for Steady-State Thermal Transmission Properties by Means of the Heat Flow Meter Apparatus

C411-26

Standard Test Method for Hot-Surface Performance of High-Temperature Thermal Insulation

C1104/C1104M-19(2025)

Standard Test Method for Determining the Water Vapor Sorption of Unfaced Mineral Fiber Insulation

C1114-06(2019)

Standard Test Method for Steady-State Thermal Transmission Properties by Means of the Thin-Heater Apparatus

C1304-23

Standard Test Method for Assessing the Odor Emission of Thermal Insulation Materials

C1338-25

Standard Test Method for Determining Fungi Resistance of Insulation Materials and Facings

E84-26a

Standard Test Method for Surface Burning Characteristics of Building Materials (Includes all amendments and changes 4/15/2026).

E176-24a

Standard Terminology of Fire Standards (Includes all amendments and changes 12/9/2024).

E795-23

Standard Practices for Mounting Test Specimens During Sound Absorption Tests

E2231-26a

Standard Practice for Specimen Preparation and Mounting of Pipe and Duct Insulation Materials to Assess Surface Burning Characteristics (Includes all amendments and changes 8/26/2026).

G21-15(2021)e1

Standard Practice for Determining Resistance of Synthetic Polymeric Materials to Fungi (Includes all amendments and changes 6/22/2021).

CAN/ULC-S102

Standard Method of Test for Surface Burning Characteristics of Building Materials and Assemblies

C168-25

Standard Terminology Relating to Thermal Insulation

C1071-25

Standard Specification for Fibrous Glass Duct Lining Insulation (Thermal and Sound Absorbing Material)