FS21 Firestop Panel 2017-05-18T21:47:21+00:00

FS21 Firestop Panel System

Refer to our downloads page for complete technical information.FS21coated_panel

FS21 Firestop Panel System is used to Fire-Stopping mechanical and electrical services where they pass through fire rated walls. Tested in accordance with BS476:Parts 20 & 22, FS21 Firestop Coated Panel System provides up to 4 hours fire protection.

General benefits:

• Cold smoke and air tight seal
• Good acoustic insulation
• No coat back required
• Simple installation
• Light weight
• Suitable for sealing around most types of service penetrations
• Unaffected by humidity
• Maintenance free
• Low smoke emission

approval-logos-fire-security-systemsFire Rating

FS21 Firestop Coated Panels will provide up to 4 hours fire protection (see technical data sheet for further details).


Weighted Sound Reduction Index (Rw) of up to 52dB. Contact our sales office with details of:

• Wall construction
• Acoustic rating required

Cold and Air Tight Seal

FS21 Panel System will provide a smoke seal around services penetrating through compartment walls.


FS21 Firestop Coated Panel System comprises of three elements:

• FS21 Firestop Coated Panel (1200mm x 600mm x 50mm)
• FS21 Firestop Acoustic Intumescent Sealant
• FS21 Firestop Ablative Coating

FS21 Firestop Coated Panels are manufactured by spraying high-density rock fibreboard with a fire rated ablative coating. The coated panels are simply cut and friction fitted between the services and the edges of the structure. Plastic pipework needs to be sealed with FS23 High Expansion Intumescent Sealant or sleeved with Insulated Fire Sleeves prior to installation of the coated panel system.

The Acoustic Intumescent Sealant is used as an adhesive on the edges of the panel to form a barrier with surrounding structure. All joints in the barrier are pointed in with Acoustic Intumescent Sealant to form a monolithic layer. The Ablative Coating is largely used to repair any damaged coating or for a more aesthetic finish. In plasterboard partitions, the panel must be fitted to both sides of the wall to fire protect the studs. The panels can be fitted by either a patrice fix or by being cut into openings. For large floor openings we would advise using FS21 Firestop Firestop Compound (see data sheet).

coated_batt_no_coat_backFibre Migration

FS21 Firestop Coated Panel System will not allow fibre migration as all exposed edges of mineral fibre are encapsulated with an acrylic based polymer.


White matt finish. Can be over painted if desired.


Install FS21 Firestop Coated Panel System to provide up to 4 hours fire rating to all service penetrations passing through all fire rated walls. Installation to be fully inn accordance with manufacturer’s instructions.