Field investigation and laboratory testing of exposed vinyl roof systems

  1. (PDF, 584 KB)
AuthorSearch for: ; Search for: ; Search for: ; Search for: ; Search for:
ConferenceCIB World Building Congress 2004: 01 May 2004, Toronto, ON
Pages114; # of pages: 14
AbstractIn 1999, a major manufacturer of thermoplastic membranes set out to ?quantify and qualify? how their oldest roofs in the United States and Canada were performing. This information was critical for their Life Cycle Cost Data. The process was as follows: This manufacturer reviewed their internal project data base and project files to determine the oldest project in each of their regions. The regions attempted to contact each owner of the building. Approximately 70% of the owners were contacted because some of the buildings were vacant or torn down. A survey was sent to the building owners of 70 of their oldest projects in the U.S and Canada (range 17-22 years old). Some surveys were filled out over the telephone. The response rate was 63%. All surveys were collected and statistics created. In 2001, the manufacturer sampled 25 of these projects in all regions and climates and invited roof consultants and architects to participate in field investigations and roof sampling. The specific roofs sampled in these different regions and climates were selected solely as a matter of convenience. That is, the roofs were samples when owners provided the manufacturer permission to do so and when the costs of accessing the selected roofs were reasonable.Samples were packaged and sent to the National Research Council of Canada (NRCC). The NRCC tested samples according to ASTM D4434 [1] (where appropriate) for thickness, tensile strength, elongation, linear dimensional change, low temperature flexibility and seam strength. It should be noted that D4434 [1] was established in 1985 and was the first ASTM standard for any single ply roof membrane in the U.S. Most of the roofs sampled were installed before the standard even existed. All of the roofs investigated and sampled were found to be in good shape. No immediate maintenance or repairs were needed. After sampling all of the existing roof membranes could be easily patched by hot air welding.
Publication date
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
NRC number47700
NPARC number20377270
Export citationExport as RIS
Report a correctionReport a correction
Record identifierf1b51634-3402-4d54-817b-7ca5472359ff
Record created2012-07-24
Record modified2016-05-09
Bookmark and share
  • Share this page with Facebook (Opens in a new window)
  • Share this page with Twitter (Opens in a new window)
  • Share this page with Google+ (Opens in a new window)
  • Share this page with Delicious (Opens in a new window)
Date modified: