Passive Fire & Structural Thermal Protection

Thin, lightweight microporous insulation

Microporous insulation for doors, marine assemblies and structural infrastructure where thermal protection, limited space and low weight matter.

Passive fire protection helps contain fire and limit its spread within a building or vessel. Siltherm supplies microporous insulation for integration into fire protection assemblies, with solutions for elevator landing doors, industrial fire doors and marine bulkheads and decks. Its thin, lightweight insulation formats also support thermal protection in bridge anchorage points and stay cables.

Siltherm Panel FP combines a reinforced microporous silica core with a glass-cloth outer envelope, providing a thin, lightweight insulation format for door manufacturers.

Reduce heat transfer

Help limit heat transfer through assemblies.

Make better use of space

Design around thinner insulation layers.

Match the application

Select insulation for your fire protection design.

Key applications and benefits from our thin, lightweight microporous insulation

Elevator Landing Doors

Elevator Landing Doors Passive Fire Protection Insulation Panels

Product:
Siltherm Panel FP>

Fire rating options: EI60, EI90 and EI120

Siltherm Panel FP was developed for integration into elevator landing door systems, helping designers combine thin insulation layers with low weight.

Benefits include:

  •  Space-efficient design: Thin panels help accommodate insulation within restricted door-leaf depths.

  • Weight optimisation: Lightweight microporous insulation supports weight-sensitive door designs.

  • Thermal protection: Low thermal conductivity helps limit heat transfer through the insulated assembly.

  • Practical handling: A glass-cloth envelope makes the panels clean and easy to handle.

  • Tailored dimensions: Large custom panel formats can be selected to suit the door construction.

Industrial Fire Doors

Industrial Fire Doors Passive Fire Insulation

Product:
Siltherm Panel FP>

Fire rating options: A60, A90 and A120

Industrial fire doors require an insulation arrangement suited to the door construction, dimensions and intended fire performance. Panel FP can be considered within the complete assembly design.

Benefits include:

  • Thin insulation layers: High thermal resistance helps address limited space inside door assemblies.

  • Reduced insulation weight: Low-density insulation can support weight optimisation.

  • Manufacturing flexibility: Panels can be cut and shaped using appropriate methods, with cut edges resealed.

  • Assembly integration: Fixing and encapsulation should be selected to suit the tested door construction.

  • Product choice: Dimensions and insulation thickness can be selected against the design requirements.

Marine Bulkheads & Decks

Product:
Siltherm Panel FP>

Siltherm microporous insulation can be evaluated for marine bulkhead and deck assemblies where available space and insulation weight are important design constraints.

Benefits include:

  • Space optimisation: Thin insulation assemblies help address constrained spaces on board.

  • Weight-sensitive design: Lightweight insulation offers opportunities to reduce insulation mass.

  • Thermal separation: Low thermal conductivity helps limit heat transfer across the insulated assembly.

  • Integration flexibility: Select insulation formats and fixings to suit steel or aluminium construction.

  • Application-specific selection: Confirm the insulation product and complete assembly evidence for the required marine application.

Suspension Bridge Anchorage Points

Suspension Bridge Anchorage Points insulation

Products:
Siltherm Panel FP >
Siltherm Panel >
Siltherm Quilt >

Thin microporous insulation can be integrated around bridge anchorage zones to limit heat transfer to critical structural components.

Benefits include:

  • Thermal protection: Helps manage temperature changes around the anchorage.

  • Compact construction: Thin insulation layers suit restricted installation spaces.

  • Low added weight: Lightweight formats minimise additional insulation mass.

  • Design flexibility: Rigid, flexible and foldable formats can suit the assembly geometry.

Stay Cables

Stay Cables insulation

Products:
Siltherm Panel FP >
Siltherm Panel >
Siltherm Quilt >

Microporous insulation offers a compact thermal barrier for stay cables, with formats selected to follow the cable and its protective assembly.

Benefits include:

  • Temperature management: Helps limit heat transfer and temperature variation.

  • Slim profile: Supports insulation integration without excessive bulk.

  • Weight optimisation: Low insulation weight suits cable-supported structures.

  • Flexible integration: Adaptable insulation formats accommodate curved surfaces.

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