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Sika Index Fidia 3mm APP Bituminous Membrane (1m x 10m)

Sika Index Fidia is a premium APP modified bituminous roof membrane engineered for professional-grade waterproofing. Reinforced with a dimensionally stable non-woven polyester and fiberglass, this 3mm torch-applied membrane offers exceptional durability and flexibility even at temperatures as low as -10°C. The underside features a polyethylene burn-off film for efficient application, while the talc-finished top surface is designed for use as a high-quality base sheet in multi-layer systems.

Primary Uses

  • Flat Roof Waterproofing: Ideal for use under protective layers or ballast.
  • Balconies & Terraces: Reliable moisture protection under tiles.
  • Multi-layer Roofing: Perfect as a durable base sheet.
  • Substrate Protection: Versatile protection for various construction surfaces.

Key Characteristics & Advantages

  • Superior Watertightness: Ensures a leak-proof barrier for critical structures.
  • High Mechanical Strength: Excellent resistance to impact, tearing, and shearing.
  • Cold Flexibility: Maintains performance and elongation in low temperatures.
  • Easy Installation: Simplified torch-on method with burn-off film indicator.

Technical Documentation: Sika Index Fidia PDS (PDF)

Technical data and application guidelines provided by Sika Technical Services.