Installation Guide:
Pre-Engineered Steel Applications
Roof Application Method D
Product
 
Average R-Values

Heat Flow Up: R-17.3*

Heat Flow Down: R-29*
* Additional R-4.5 added for a still air film for heat flow down and R-1.3 for heat flow up.
* System R-values if 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

This application is suitable for 6" Z or C purlins with 3.5" unfaced mass insulation.

  1. Measure working area where Flexfoil will be applied.
  2. Apply Flexfoil to the bottom facing of the purlins, ensuring that it is pulled tight.
  3. Securely tape any exposed seams using Flexfoil reflective tape.
  4. Apply the steel roof deck using approved methods of installation (if not already in place).