Work Item
ASTM WK88686

Revision of C1224-22 Standard Specification for Reflective Insulation for Building Applications


ASTM C518 is a reliable and precise test method for determining material R-value
with a reproducibility of about 3%. C1363 has a much larger measurement uncertainty
than C518 that is magnified when a minor component of a test assembly is being evaluated.

The use of C518 to determine framing R-value represents economy of resources in
addition to improved accuracy.


Developed by Subcommittee: C16.21

Committee: C16

Staff Manager: Mary Mikolajewski

Work Item Status

Date Initiated: 11-21-2023

Technical Contact: Wesley Hall