Intumescent Seals (30 mins) Fire - Smoke

Color
Size

Astro Strip FS is an intumescent fire and smoke seal designed for installation around fire-rated timber doors. In the event of a fire, the intumescent core expands under heat to help seal the gap between the door leaf and frame, reducing the passage of flames and hot gases.

The integrated smoke brush also helps restrict the movement of cold smoke during the early stages of a fire, making it suitable for doors requiring combined fire and smoke protection.

Available in 30-minute and 60-minute fire-rated options, with a selection of widths to suit different door specifications.

Key Features

  • Combined intumescent fire and smoke seal
  • Integrated smoke brush
  • Suitable for fire-rated timber doors and frames
  • Supplied in 2100mm lengths
  • Available for 30-minute and 60-minute applications
  • Available in white, brown and selected colour options
  • Simple installation into a correctly sized groove

Available Sizes

  • 10mm × 4mm × 2100mm — 30-minute fire and smoke seal
  • 15mm × 4mm × 2100mm — 30-minute fire and smoke seal
  • 20mm × 4mm × 2100mm — 60-minute fire and smoke seal
  • 25mm × 4mm × 2100mm — 60-minute fire and smoke seal

The seal size and fire rating must be selected in accordance with the fire door manufacturer’s certification and installation requirements.


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Compliance & Certification

Fire doors must be fully traceable and supported by valid test evidence. All our products are backed by third-party certification and supplied as part of a compliant, tested system, not individual components.

Installation Guidance

Correct installation is essential to achieving fire performance. We provide technical guidance to ensure your door is installed in line with tested evidence, BS standards, and manufacturer requirements.

Delivery & Lead Times

Lead times vary depending on specification, finish, and configuration. We provide clear timelines and updates to support project planning and avoid delays on site.

Learn more in our compliance hub

Fire Doors are a System, not just a Door Leaf.

Compliance is achieved through correct specification, compatible components, and tested assemblies. Incorrect decisions at specification stage often lead to failed inspections, delays, and costly rework. Do not gamble with safety.

Anatomy of a Fire Door System

Every component affects compliance.
Understand how components must work together
as a tested, certified assembly, not a mix of parts.
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Supplied from certified, trusted manufacturers