4.3.10 CSST Clearance from Underside of Roof Deck

  1. A min of 3 inches of separation should be maintained from the underside of a shingled roof deck to take into account the potential of roof nail penetrations due to future and/or replacement of roof.
  2. Gastite Yellow CSST shall not be in contact with reflective radiant barrier insulation that is attached to the underside of a roof deck or attic walls.
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