a.1.Containing no bitumen; not bituminous.
References in periodicals archive ?
He is a member of the WMA working group and the Transportation Research Board's Committee AFK30: Characteristics of Nonbituminous Components of Bituminous Paving Mixtures.
They include test methods, specifications, practices, terminology, and guides for topics such as bituminous emulsions, felts and fabrics, nonbituminous organic roof coverings, prepared roofings, shingles, and siding materials, roofing membrane systems, and waterproofing and damproofing systems.
"A lot of roofs today are nonbituminous, so you don't want somebody going up to make a repair using bituminous materials.