Installation Guide:
Pre-Engineered Steel Applications
Roof Application Method B
Product
 
Average R-Values
Heat Flow Up: R-6.5*
Heat Flow Down: R-21.0*
* System R-values is for two enclosed air
spaces. Additional R-4.5 added for a still
air film for heat flow down and R-1.3 for
heat flow up.
Instructions

This application is suitable for Z or C purlins.

  1. Measure working area where Flexfoil will be applied.
  2. Drape the Flexfoil across the top of the purlins allowing enough material to sag so that a 3/4" to 11/2" airspace is achieved.
  3. Apply the Flexfoil to the bottom facing of the purlins, ensuring it is pulled tight.
  4. If the Flexfoil is run across the purlins, ensure that all seams are securely taped using Flexfoil reflective tape.
  5. Apply the steel roof deck using approved methods of installation.