
Roofing Applications
System R-Value: R- 11.04 Down, R- 7.29 Up
Average System R-Value: R- 9.15 Down
New Construction Over Roof Rafter Installation
Residential Metal Roof Installation
After roof truss or roof rafters have been located and installed, install Low-E Insulation® by drooping approx. 2” at center of span over the
truss/rafters. Use staples to attach material. To assure a proper vapor barrier, all seams should be taped securely with Low-E tape.
If continuous roof/ridge vent is to be installed, insulation should stop approx. 2” from vent to allow flow of air out of roof system.
SYSTEM R-VALUES FOR THESE INSTALLATION METHODS WERE CALCULATED USING DATA FROM THE ASHRAE HANDBOOK OF FUNDAMENTALS
Furring boards provide airspace between top of ESP Low-E® Insulation and underside of metal roof.
SYSTEM R-VALUES FOR THESE INSTALLATION METHODS WERE CALCULATED USING DATA FROM THE ASHRAE HANDBOOK OF FUNDAMENTALS
9.
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