Also found in: Acronyms.
built-up roofing[′bilt‚əp ′rüf·iŋ]
A seamless piece of flexible, waterproofed roofing material consisting of plies of felt mopped with asphalt or pitch.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
Flat roof covered with multiple layers of roofing felt, secured with layers of hot tar, and topped with a layer of crushed stone. See also: Roof
Illustrated Dictionary of Architecture Copyright © 2012, 2002, 1998 by The McGraw-Hill Companies, Inc. All rights reserved
built-up roofing, composition roofing, felt-and-gravel roofing, gravel roofing
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.