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Stickiness Explained! Making Building Tapes and Membranes Stay Put

by LiveModern Webmaster last modified Jul 11, 2012 01:01 AM
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by Paula Melton last modified Jul 10, 2012

Author name:  Peter Yost Blog Category:  GreenSpec Insights When you use tape to seal a seam or flash a sill, you need peel-and-stick performance—not “stick-and-peel.” ...or is it? Our confidence in tape might be a little misplaced. While liquid sealants most often are used on the exposed surfaces of building enclosures, pressure-sensitive adhesive tapes (member link) and membranes are used one or even two layers deep in the building assembly to seal the margins of weather-resistive and air barriers and at penetrations such as window openings. Their location means that they cannot be inspected, repaired, or replaced; we need to know that they will maintain their integrity and function for the full service life of the assembly. What makes stuff “sticky?” It’s pretty easy to take pressure-sensitive adhesion (PSA) for granted; from band-aids to masking tape to peel-and-stick membranes, we use them pretty much every day. But the science of PSA is complex and even a bit uncertain. read more






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