Breeze or Freeze? The Essential HVAC Tools Every Smart Homeowner Needs to Know
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Which adhesive film is code-approved for sealing joints on sheet metal air ducts?
Explanation
Despite its name, standard cloth duct tape degrades, dries up, and drops off over time. Code-approved Foil Scrim Kraft (FSK) tape or aluminum foil tape features a heavy acrylic adhesive layer that withstands temperature swings and seals drafts indefinitely.