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Convective Air Slab

Slide #9: Taping gaps in the blocks

  1. Determine to what extent gaps in the blocks exceed 1/4" inch that are aligned north-south.
  2. Tape gaps in blocks, with 3" duct tape to insure poured concrete does not block air movement.
  3. Tape around plumbing and electrical conduits, and the furnace can.

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