Apply for the Melvin Kruger Scholarship Program by Jan. 30, 2025.

Roof blisters cause and cure

To obtain a copy of a specific publication, users should contact the publication's publisher directly.

Abstract
Blisters are a major problem of built up roof membrnes. They are caused by voids built into the roof during construction. They develop into the characteristic of dome-shaped humbs by a breathing action driven by thermal cycling. A small pressure relief vent was patented by CRREL, as a cost effective way to repair blisters. Though these vents cannot prevent blisters from forming, they can lengthen a roof's service life by repairing the blisters before they break. Two demonstration projects were conducted to transer the blisters vent technology to the military community. Most participants in the demonstration projects found the vent easy to use and that is performed as designed. The main objection to the vent was its price.
Date
7/1995
Author(s)
C Korhonen; B Charest
Page(s)
13
Keyword(s)
blister; built up roof; maintenance; repair


Note: Documents in this section are provided as Adobe Acrobat PDF files. In order to print and view PDF files, the Adobe Acrobat Reader software/plugin, which runs on Microsoft Windows, Macintosh, OS/2 and various versions of UNIX, must be installed on your computer. Adobe Acrobat Reader is available for download as freeware from Adobe Acrobat's website. Please note that the resolution of on-screen versions is not as high as printed versions of PDF files.

Advertisement

Subscribe for Updates Join 25,000+ roofing professionals following NRCA

Subscribe to NRCA