New Test Method for Determining Walkability of Steep-slope Underlayments
1. Scope
This test covers the determination of slip resistance of asphalt-based and polymer-based steep-slope underlayments
Keywords
asphaltic; felt; polymeric; organic; inorganic; fiber-reinforced; polyethylene; polypropolene; synthetic
Rationale
A test method for walkability--most recently--comes from the development of the Synthetic Underlayment standard (ASTM D8257). Negatives about slip resistance of these products were unresolved until a TG was formed to develop 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.
Work Item Status
Date Initiated: 11-19-2025
Technical Contact: Mathew Dupuis
Item: 000
Ballot:
Status: