Envirograf Intumescent Coated Fireproof Sponge
  • Envirograf Intumescent Coated Fireproof Sponge

Envirograf Intumescent Coated Fireproof Sponge

Product 40

This Intumescent Coated Fireproof Sponge is a new type of expansion joint that will char, not burn, in fire, making it an effective fire barrier. Coated in intumescent material to expand in fire, the sponge is non-fibrous making it ideal for use in hospitals and computer rooms.

  • Refer to sizes below
  • Easy to cut
  • Supplied in 1m lengths and sheets
  • Choose thickness between 10mm-60mm

Shipping Options (Select at Checkout):

Economy Shipping (10-14 Working Days): £10 +VAT
Express Shipping (2-3 Working Days): £25 +VAT

VAT excluded

£6.61 Tax incl.



Up to 1 hour protection (1m length)

Ref Depth Into Wall Thickness Gap Size
FCS1/30/10 30mm 10mm 2-10mm
FCS1/30/15 30mm 15mm 2-15mm
FCS1/30/20 30mm 20mm 10-20mm
FCS1/30/25 30mm 25mm 15-25mm
FCS1/30/30 30mm 30mm 20-30mm
FCS1/30/40 30mm 40mm 30-40mm
FCS1/30/50 30mm 50mm 40-50mm
FCS1/30/60 30mm 60mm 50-60mm

1m x 1m Sheets

Ref Thickness
FCS10 10mm
FCS15 15mm
FCS20 20mm
FCS25 25mm
FCS30 30mm
FCS40 40mm
FCS50 50mm
FCS60 60mm

Up to 2 hours protection (1m length)

Ref Depth Into Wall Thickness Gap Size
FCS2/40/10 40mm 10mm 2-10mm
FCS2/40/15 40mm 15mm 5-15mm
FCS2/40/20 40mm 20mm 10-20mm
FCS2/40/25 40mm 25mm 15-25mm
FCS2/40/30 40mm 30mm 20-30mm
FCS2/40/40 40mm 40mm 30-40mm
FCS2/40/50 40mm 50mm 40-50mm
FCS2/40/60 40mm 60mm 50-60mm
FCS200/20 20mm 200mm  
FCS200/30 30mm 200mm

Envirograf Intumescent Coated Fireproof Sponge will give between up to 1-2 hours fire protection depending on the circumstances, a depth of 30mm into the wall will achieve up to 1-hour fire protection where at a 40mm depth it achieves 2 hours fire protection.

Coated with intumescent material that, in a fire, expands round services and cables to seal against fire and smoke, slowing down the spread of fire to aid evacuation and prevent damage to other rooms and parts of a building.

Use the fireproof sponge for small or large expansion and movement joints and under raised floors, between glass screens and rainscreens, with or without ventilation, and concrete floors, as well as between metal cladding and concrete.


For small or large expansion/movement joints, under raised computer floors, between glass screen walls (rainscreens, with or without ventilation) and concrete floors, and between metal cladding and concrete. Between modular buildings on top of each other.

Supplied in sheets or strips from 10mm to 100mm thick.

The sponge is easily cut to size and compressed to fit into small apertures. The sponge is simply pushed into place where required to protect gaps and openings.

A non-fibrous sponge which will expand around cables and services in a fire giving a smoke/gas and fire seal.

Material Specification:

This product is a black flexible polyurethane sponge treated with flame retardants, Particulate filler and a polymeric bonding agent. The sponge is then overcoated using L/VFR which has a smooth black finish.

  • Density (Kg/m³) 90-100
  • Hardness 130-180
  • Tensile strength (Newton’s) Min 70
  • Elongation at break % Min 90
  • Fire Proof Coating – L/VFR Black

Test Integrity Insulation
LPC TE93885 66 Minutes 50 Minutes
LPC TE93529 114 Minutes 69 Minutes
LPC TE92650 62 Minutes 55 Minutes
Trada TFEIF 95023 240 Minutes 138 Minutes

IMPORTANT FIRE PRODUCTS NOTICE: The information displayed on this website should be used as a guide ONLY and our Technical Department should be contacted to obtain a tailored specification and any advice necessary before you place an order for fire protection products. Fire protection products are non-returnable except in accordance with Condition 8 of the Terms and ConditionsWe will not be held liable for any resulting damage to property, human life or monetary costs incurred due to the incorrect specification you have prepared or use of fire protection products caused by your negligence, including your failure to have contacted us to obtain the relevant advice/specification.

Any Envirograf products to be used in or for Harrods department store should be authorised with our Technical Team prior to purchase.

It is your responsibility to read the Product Data Sheets (available below) before you place an order and prior to application of the product. The content of this website is our best recommendation and is not advice. Coverage rates quoted are approximate, you agree that coverage depends on the condition of the substrate, surface absorption, texture and application method. We ALWAYS recommend a trial area is coated to ensure the product meets your requirements before use.

Product Details
Product 40

Customer agrees that before placing an Order, Customer has read and understood the most up to date Product Data Sheet for the Product. Where we have access to the Product Data Sheet from the manufacturer, we will either provide a copy on request, or include a link to the Product Data Sheet available on the manufacturer’s website. Customer further agrees that we have no liability for any errors or omissions contained within the Product Data Sheets. For more information, please see our Terms & Conditions of Sale.

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