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ASTM C1303

Standard Test Method for Predicting Long-Term Thermal Resistance of Closed-Cell Foam Insulation

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Organization: ASTM
Publication Date: 1 November 2009
Status: inactive
Page Count: 20
scope:

This test method covers a procedure for predicting the long-term thermal resistance (LTTR) of unfaced or permeably faced rigid gas-filled closed-cell foam insulations by reducing the specimen thickness to accelerate aging under controlled laboratory conditions (1-5) .2

Rigid gas-filled closed-cell foam insulation includes all cellular plastic insulations manufactured with the intent to retain a blowing agent other than air.

This test method is limited to unfaced or permeably faced, homogeneous materials. This method is applied to a wide range of rigid closed-cell foam insulation types, including but not limited to: extruded polystyrene, polyurethane, polyisocyanurate, and phenolic. This test method does not apply to impermeably faced rigid closed-cell foams or to rigid closedcell bun stock foams.

NOTE 1-See Note 7 for more details regarding the applicability of this test method to rigid closed-cell bun stock foams.

This test method utilizes referenced standard test procedures for measuring thermal resistance. Periodic measurements are performed on specimens to observe the effects of aging. Specimens of reduced thickness (that is, thin slices) are used to shorten the time required for these observations. The results of these measurements are used to predict the long-term thermal resistance of the material.

The test method is given in two parts. The Prescriptive Method in Part A provides long-term thermal resistance values on a consistent basis that can be used for a variety of purposes, including product evaluation, specifications, or product comparisons. The Research Method in part B provides a general relationship between thermal conductivity, age, and product thickness.

To use the Prescriptive Method, the date of manufacture must be known, which usually involves the cooperation of the manufacturer.

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

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 limitations prior to use.

2 The boldface numbers in parentheses refer to the list of references at the end of this standard.

Document History

March 1, 2019
Standard Test Method for Predicting Long-Term Thermal Resistance of Closed-Cell Foam Insulation
This test method covers a procedure for predicting the long-term thermal resistance (LTTR) of unfaced or permeably faced rigid gas-filled closed-cell foam insulations by reducing the specimen...
December 1, 2015
Standard Test Method for Predicting Long-Term Thermal Resistance of Closed-Cell Foam Insulation
This test method covers a procedure for predicting the long-term thermal resistance (LTTR) of unfaced or permeably faced rigid gas-filled closed-cell foam insulations by reducing the specimen...
April 15, 2014
Standard Test Method for Predicting Long-Term Thermal Resistance of Closed-Cell Foam Insulation
This test method covers a procedure for predicting the long-term thermal resistance (LTTR) of unfaced or permeably faced rigid gas-filled closed-cell foam insulations by reducing the specimen...
March 1, 2012
Standard Test Method for Predicting Long-Term Thermal Resistance of Closed-Cell Foam Insulation
This test method covers a procedure for predicting the long-term thermal resistance (LTTR) of unfaced or permeably faced rigid gas-filled closed-cell foam insulations by reducing the specimen...
May 15, 2011
Standard Test Method for Predicting Long-Term Thermal Resistance of Closed-Cell Foam Insulation
This test method covers a procedure for predicting the long-term thermal resistance (LTTR) of unfaced or permeably faced rigid gas-filled closed-cell foam insulations by reducing the specimen...
March 1, 2011
Standard Test Method for Predicting Long-Term Thermal Resistance of Closed-Cell Foam Insulation
This test method covers a procedure for predicting the long-term thermal resistance (LTTR) of unfaced or permeably faced rigid gas-filled closed-cell foam insulations by reducing the specimen...
June 1, 2010
Standard Test Method for Predicting Long-Term Thermal Resistance of Closed-Cell Foam Insulation
This test method covers a procedure for predicting the long-term thermal resistance (LTTR) of unfaced or permeably faced rigid gas-filled closed-cell foam insulations by reducing the specimen...
December 1, 2009
Standard Test Method for Predicting Long-Term Thermal Resistance of Closed-Cell Foam Insulation
This test method covers a procedure for predicting the long-term thermal resistance (LTTR) of unfaced or permeably faced rigid gas-filled closed-cell foam insulations by reducing the specimen...
ASTM C1303
November 1, 2009
Standard Test Method for Predicting Long-Term Thermal Resistance of Closed-Cell Foam Insulation
This test method covers a procedure for predicting the long-term thermal resistance (LTTR) of unfaced or permeably faced rigid gas-filled closed-cell foam insulations by reducing the specimen...
September 15, 2008
Standard Test Method for Predicting Long-Term Thermal Resistance of Closed-Cell Foam Insulation
This test method covers a procedure for predicting the long-term thermal resistance (LTTR) of unfaced or permeably faced rigid gas-filled closed-cell foam insulations by reducing the specimen...
September 15, 2008
Standard Test Method for Predicting Long-Term Thermal Resistance of Closed-Cell Foam Insulation
This test method covers a procedure for predicting the long-term thermal resistance (LTTR) of unfaced or permeably faced rigid gas-filled closed-cell foam insulations by reducing the specimen...
February 15, 2007
Standard Test Method for Predicting Long-Term Thermal Resistance of Closed-Cell Foam Insulation
This test method covers a procedure for predicting the long-term thermal resistance (LTTR) of unfaced or permeably faced rigid gas-filled closed-cell foam insulations by reducing the specimen...
March 10, 2000
Standard Test Method for Estimating the Long-Term Change in the Thermal Resistance of Unfaced Rigid Closed-Cell Plastic Foams by Slicing and Scaling under Controlled Laboratory Conditions
1. Scope 1.1 This test method covers a procedure for estimating the long-term change in thermal resistance of unfaced rigid closed-cell plastic foams by reducing the material thickness to accelerate...
December 10, 1995
Standard Test Method for Estimating the Long-Term Change in the Thermal Resistance of Unfaced Rigid Closed Cell Plastic Foams by Slicing and Scaling under Controlled Laboratory Conditions
1. Scope 1.1 This test method covers a procedure for estimating the long-term change in thermal resistance of unfaced rigid closed cell plastic foams by reducing the material thickness to accelerate...

References

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