OSB sheating with integral water resistive barrier
2010 (English)Conference paper (Refereed)
Elimination of polyethylene film for most of the North American climate zones changes the pattern of moisture control in wood frame walls and leadsto re-examination of the performance of water resistive membranes (WRB). WRB products contribute to the following aspects of environmental control: (1) water penetration, (2) drainage, (3) air flow resistance, (4) water vapor diffusion to and from the wall and if the rain-screen principle is used, than (5) WRBs affect the pressure in the air cavity.
WRB membrane installation practice, being so different from the laboratory testing conditions, gives a reason for the development of a new technology, namely that of integral WRB that is applied directly to OSB boards. In this work the air control performance of integral WRB was found superior to plastic films, which combined with easier adjustment of water vapor permeance to the required level for a given climate zone and with the ease of installation makes them a winning technology. This paper shows also the significance of details in the installation of WRB materials.
Place, publisher, year, edition, pages
Oriented strand board (OSB) with integral coating, coating, water resistive barrier (WRB)
IdentifiersURN: urn:nbn:se:kth:diva-65788OAI: oai:DiVA.org:kth-65788DiVA: diva2:483720
BEST 2 - A New Design Paradigm for Energy Efficient Buildings. Portland. April 12-14, 2010
QC 201201262012-01-252012-01-252012-01-26Bibliographically approved