Abstract
Cold process and liquid applied roofing and waterproofing systems have been available on the U.S. roofing and waterproofing market for over 50 years. These sydtems were primarily designed to eliminate concerns associated with hot bitumen application by substituting asphalt cutbacks for the hot mopped bitumen as the interply and surfacing bitumen. Although variations of these systems have been used in the United States for many years, they have never seriously contended with hot applied built up systems for market share. Their predominate use has been restricted to repair and mainaintance of hot applied built up systems. In recent years, the market share of these systems has expanded due to increased environmental regulations of hot applied systems, new material developments and technology and an ascent of situations where conventional systems prove inpractical. This growth trend is expected to continue into the new millenium. This paper will analyze the performance characteristics of these types of sytems based on independent testing and available historical data. the main characteristics analyzed will be waterproofing capabilities, anticipated service life, strength characteristics and durability. Independent testing will be conducted on samples removed from existing applications in different U.S. geogrphic locations and a range of system ages. The criteria testing established to determine the waterproofing ability of these systems will be: visual observation, microscopic examination, tensile and elongation tests, test cut analysis, water tests and accelerated water tests. The advantages and disadvantages of these systems will be presented with recommendations and solutions for proper application procedures.
Cold process and liquid applied roofing and waterproofing systems have been available on the U.S. roofing and waterproofing market for over 50 years. These sydtems were primarily designed to eliminate concerns associated with hot bitumen application by substituting asphalt cutbacks for the hot mopped bitumen as the interply and surfacing bitumen. Although variations of these systems have been used in the United States for many years, they have never seriously contended with hot applied built up systems for market share. Their predominate use has been restricted to repair and mainaintance of hot applied built up systems. In recent years, the market share of these systems has expanded due to increased environmental regulations of hot applied systems, new material developments and technology and an ascent of situations where conventional systems prove inpractical. This growth trend is expected to continue into the new millenium. This paper will analyze the performance characteristics of these types of sytems based on independent testing and available historical data. the main characteristics analyzed will be waterproofing capabilities, anticipated service life, strength characteristics and durability. Independent testing will be conducted on samples removed from existing applications in different U.S. geogrphic locations and a range of system ages. The criteria testing established to determine the waterproofing ability of these systems will be: visual observation, microscopic examination, tensile and elongation tests, test cut analysis, water tests and accelerated water tests. The advantages and disadvantages of these systems will be presented with recommendations and solutions for proper application procedures.
Date
10/2000
10/2000
Author(s)
John D'Annunzio
John D'Annunzio
Page(s)
512-521
512-521
Keyword(s)
liquid applied; cold applied; performance characteristics; materials analysis; application
liquid applied; cold applied; performance characteristics; materials analysis; application