Installation Guide:
Pre-Engineered Steel Applications
Roof Application Method A
Product
 
Average R-Values
Heat Flow Up: R-4.0*
Heat Flow Down: R-10.0*
* System R-Value is for one enclosed air space. Additional R-4.5 added for a still air film for heat flow down and R-1.3 for heat flow up.
 
Instructions
  1. This application is suitable for Z or C purlins.
  2. Measure working area where Flexfoil will be applied.
  3. 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.
  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.