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INSTALL GUIDES: CATHEDRAL CEILING METHOD #2
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USE: Prodex Total, Prodex Fast Action
OR Foil-Bubble-Foil (FBF)
Be sure to have a ventilated airspace between the top of the insulation and the roof.

CATHEDRAL CEILING METHOD #2

Installation Method:

  1. Secure the rigid insulation (optional) against the rafters or the existing ceiling (follow the manufacturers' recommendations).
  2. Install the wood strapping at every 16" c/c.
  3. Staple the Prodex and seal with aluminum tape.
  4. Install the second wood strapping perpendicular to the first one, and then screw the drywall.
If applying two layers of Prodex: Install a third strapping perpendicular to the 2nd. Staple the insulation and seal seams with tape. Attach 4th strapping perpendicular to third and screw the drywall. This will allow for an air-gap between layers of insulation and improve performance.

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