Foil Scrim Kraft Tape

• Tape Description

  This versatile foil scrim kraft tape features a three-layer composite backing engineered for maximum durability and environmental protection. The exterior aluminum foil layer reflects heat and acts as an impermeable barrier against air, moisture, and water vapor. Embedded between the foil and kraft paper is a high-tensile fiberglass scrim grid that prevents tearing under tension and structural movement. The underlying kraft paper provides added body and stability, while the high-tack adhesive creates a permanent bond to metal, fiberglass, and duct board surfaces.

  The primary function of FSK tape is to create airtight, vapor-proof seals across HVAC ductwork, insulation panels, and building envelopes. It minimizes air leakage in heating and cooling networks to maximize overall energy efficiency. Easy to apply on flat surfaces, seams, and complex joints, Foil Scrim Kraft Tape is an indispensable material for maintaining thermal performance and indoor climate control.

• Features & Benefits

  • Superior Vapor & Moisture Barrier: The aluminum foil and kraft backing prevent moisture ingress and vapor transmission, protecting insulation systems from mold and mildew.
  • Reinforced Tear Resistance: Integrated fiberglass scrim delivers high tensile strength, ensuring the tape withstands mechanical stress without splitting.
  • Thermal & Flame Resistance: Reflects radiant heat to maintain energy efficiency while utilizing a flame-retardant adhesive system to meet commercial safety standards.
  • High-Tack Surface Adhesion: Formulated to achieve a permanent, reliable bond to aluminum, sheet metal, duct board, and fibrous glass insulation.
  • Pliable & Workable: Easily conforms to uneven surfaces, corners, and joints for complete, seam-free coverage on the job site.

• Applications

  • HVAC Ductwork Sealing: Sealing joints, seams, and connections on fiberglass duct board and flexible air ducts to eliminate conditioned air leaks.
  • Insulation Jacketing Repair: Patching punctures, tears, and open seams in foil-scrim-kraft-faced pipe and wall insulation.
  • Vapor Barrier Installation: Sealing overlap seams in vapor barriers across roofs, exterior walls, and floor assemblies to block moisture migration.
  • General Industrial Sealing: Securely wrapping and sealing thermal systems exposed to high ambient temperatures and humidity.

• Tape Properties

  PROPERTIES	METRIC	ENGLISH	TEST METHOD
  Backing Thickness	120Micron	4.8Mil	PSTC-133 / ASTM D 3652
  Total Thickness	170 Micron	6.8Mil	PSTC-133 / ASTM D 3652
  Adhesion to Steel	25N/25mm	90Oz./In.	PSTC-101 / ASTM D 3330
  Tensile Strength	120 N/25mm	27.3Lb/In	PSTC-131 / ASTM D 3759
  Elongation	1.0%	1.0%	PSTC-131 / ASTM D 3759
  Service Temperature	-30℃ to +80℃	-22℉ to +176℉
  Applying Temperature	+10℃ to +40℃	+50℉ to +105℉

• Tape Roll Size

  Finish Roll:	50mm x 50m 2” x 55yds 75mm x 50m 3” x 55yds
  Log Roll:	1200mm x 50m
  Jumbo Roll:	1200mm x 900m

   

FAQ:

Q1. What does FSK stand for in Foil Scrim Kraft Tape?
A: FSK stands for Foil, Scrim, and Kraft—referring to the three laminated layers that make up the tape's reinforced backing: aluminum foil, fiberglass scrim netting, and kraft paper.

Q2. Why is fiberglass scrim included in the backing?
A: The scrim layer provides multi-directional reinforcement and high tensile strength, preventing the tape from tearing, stretching, or puncturing during installation and environmental flexing.

Q3. Does FSK Tape work as a flame-retardant material?
A: Yes. The backing components and specialized adhesive layer are engineered with flame-retardant properties to meet safety requirements in residential and commercial HVAC applications.

Q4. Can Foil Scrim Kraft Tape adhere directly to metal ductwork?
A; Yes. The high-performance pressure-sensitive adhesive bonds strongly to bare sheet metal, galvanized steel, aluminum, and foil-faced insulation panels.

Q5. Is FSK Tape suitable for outdoor applications?
A: While FSK tape offers high resistance to moisture and heat, outdoor applications typically require protection from direct, prolonged UV exposure or extreme weather unless covered by an exterior jacketing system.