Work Item
ASTM WK78365

New Test Method for Determining Walkability of Steep-slope Underlayments

1. Scope

The promotion of knowledge, stimulation of research, and development of standards pertaining to materials and systems for roofing and waterproofing, for related building, industrial, and agricultural uses. These activities shall be coordinated with those of other ASTM committees and national and international organizations having similar interests.


asphaltic; felt; polymeric; organic; inorganic; fiber-reinforced; polyethylene; polypropolene; synthetic


A test method for walkability--most recently--comes from the development of the Synthetic Underlayment standard (quire recent initial publication). Negatives about slip resistance of these products were unresolved until Matt Dupuis and I volunteered to chair a TG to develop/reinvent a test method for slip resistance of steep-slope underlayments. This is important for manufacturers and contractors for rooftop safety of workers. Manufacturers will be able to list Walkability / Slip Resistance as a physical property of underlayments so users of products can compare Walkability from product to product.

The title and scope are in draft form and are under development within this ASTM Committee.


Developed by Subcommittee: D08.02

Committee: D08

Staff Manager: Frank McConnell

Work Item Status

Date Initiated: 09-20-2021

Technical Contact: James Kirby

Item: 000