i-STIX FSK foil tape (IS 56214 V) is a foil-scrim-kraft aluminium foil tape made in India by Instabiz Solutions. The scrim reinforcement makes it tear resistant, and it matches FSK-faced glass wool and rockwool insulation on HVAC ducts. FSG and FSM versions are also available.

FSK, FSG and FSM Aluminium Foil Tape: Features

• Reinforced foil laminate: 120 mic foil with scrim reinforcement

• FSK construction: Foil, scrim and kraft; -40 to 120 °C

• FSG construction: Foil, scrim and glass; -20 to 160 °C

• FSM construction: Foil with scrim mesh; 100 N/25 mm tensile

• Hotmelt adhesive: Up to 20 N/25 mm peel adhesion

• Heat-active variants: IS 56218/56228/56238 V for heat-sealed jobs

• Zero-stretch backing: 0% elongation keeps seams tight

Advantages

• Matches facing material: Seamless repair of FSK/FSG-faced insulation

• Continuous vapour seal: Prevents condensation and insulation damage

• Tear-resistant: Scrim stops splits during handling and wrapping

• Cold-duct reliability: Stays bonded on chilled lines

• Flame-resistant facing: FSG suits fire-sensitive insulation areas

• Lower rework: Fewer failed joints on large projects

Where FSK, FSG and FSM Aluminium Foil Tape is used

• HVAC duct insulation: Seal fibreglass duct wrap and duct board

• Chilled water piping: Vapour-seal pipe section joints

• Building insulation: Join mineral wool and glass wool blankets

• Industrial plants: Thermal lagging on process pipes and vessels

• Marine: Engine room and ship insulation jacketing

• Cold storage: Refrigeration and cold room insulation seams

• Roof insulation: Join reflective underdeck insulation sheets

How to apply

• Ensure facing is clean, dry and dust-free

• Centre tape over the joint, overlap both sides

• Peel liner progressively as you apply

• Rub down firmly with squeegee to bond scrim

• Avoid application below recommended temperature

Buying tips

• Match tape facing (FSK, FSG, FSM) to insulation facing

• Pick FSG for highest heat or flame-sensitive areas

• Pick FSM for curved, flexible or irregular surfaces

• Pick FSK for standard fibreglass duct wrap and vapour sealing

Frequently asked questions

What does FSK mean?

Foil-Scrim-Kraft: aluminium foil reinforced with a glass scrim and backed with kraft paper.

Where is FSK tape used?

Sealing joints on FSK-faced duct insulation, glass wool, rockwool and insulated panels.

Do you supply FSK tape to HVAC contractors?

Yes. Rolls and jumbo rolls are supplied across India and for export.

Need a quote, samples or jumbo rolls? WhatsApp or call +91 84339 47783, or email sales1@instabizsolutions.com.