Page 413 - Construction Waterproofing Handbook

THE BUILDING ENVELOPE: PUTTING IT ALL TOGETHER 10.15

FIGURE 10.14 EIFS using sheet flashing. (Courtesy of Bonsal)

the performance of hot-applied systems are available, including those incorporating
fibrous reinforcement.
Cold-applied systems
Cold-applied dampproofing systems are available in both coal-tar and asphaltic-based compo-
sitions. These systems are solvent-based derivatives, with or without fibrous reinforcement, that
cure to form seamless applications after installation. Unfibered or minimal fiber systems are
applicable by spraying. Heavily reinforced systems materials are applicable by trowel or brush.
Typically used on concrete or masonry substrates, cold-applied dampproofing materi-
als can also be used on metal, wood, and natural stone substrates. Cold systems are used
in both positive and negative applications, both above and below grade. Negative systems
are applied to walls that are furred and covered with drywall or lath and plaster.
Negative systems do not allow for the collecting and redirecting of water entering an
envelope. Therefore, negative applications are used only when vapor transmission through
the primary waterproofing barrier is expected.
Cold-applied emulsion-based asphalt systems are also available. These water-based
systems offer easy cleanup and are used where solvent systems can damage adjacent flash-
ings, waterproofing materials, or substrates themselves. Some cold-applied emulsion-based