Abstract
Blistering is a common problem with liquid applied exterior systems such as built up roofs. Blisters are raised surface areas over voide which contain entrapped air or moisture or both. In general, these voids can be attributed to the materials used and the installation methods that cause unadhered layers, entrapped debris, curled felts, uneven substrates and skips in bitumen mopping. All these variables make installing a perfect void free roof virtually iimpossible. Blistering is a common problem and the causes of blister formation and the proper tratments are well understood; people need to be made more aware of these facts. This paper will review the literature on blister formation and discuss methods to reduce blister formation.
Blistering is a common problem with liquid applied exterior systems such as built up roofs. Blisters are raised surface areas over voide which contain entrapped air or moisture or both. In general, these voids can be attributed to the materials used and the installation methods that cause unadhered layers, entrapped debris, curled felts, uneven substrates and skips in bitumen mopping. All these variables make installing a perfect void free roof virtually iimpossible. Blistering is a common problem and the causes of blister formation and the proper tratments are well understood; people need to be made more aware of these facts. This paper will review the literature on blister formation and discuss methods to reduce blister formation.
Date
9/1997
9/1997
Author(s)
Alison Murray; Robert Booth; Ralph Paroli
Alison Murray; Robert Booth; Ralph Paroli
Page(s)
302-307
302-307
Keyword(s)
adhesion; asphalt; blister; bubble; BUR; diffusion; entrapped air; moisture; off gass; void
adhesion; asphalt; blister; bubble; BUR; diffusion; entrapped air; moisture; off gass; void