Work Item
ASTM WK85348

Revision of C1676/C1676M-19 Standard Specification for Microporous Thermal Insulation


Currently no criteria are set forth in the standard to define the level of water repellency required for a material to be classified as Grade 2B, hydrophobic insulation. The change to the standard would incorporate criteria and testing in accordance with ASTM C1763, Standard Test Method for Water Absorption by Immersion of Thermal Insulation Materials, to establish a maximum level of water absorption allowed to classify a microporous insulation as Grade 2B hydrophobic insulation.


Developed by Subcommittee: C16.20

Committee: C16

Staff Manager: Mary Mikolajewski

Work Item Status

Date Initiated: 02-17-2023

Technical Contact: William Gregg

Item: 000