• Envirograf Intumescent Coated Slabs

Envirograf Intumescent Coated Slabs

Product 4

We no longer stock this product, but can recommend as our nearest alternatives:

Please contact our Technical Team on 0113 2455450 (option 2) or send a message to [email protected] prior to purchase/use for advice on suitability.



Use Envirograf Intumescent Coated Slabs to permanently fireproof walls, ceilings and floors in rooms where fire is a real risk, such as computer rooms. Also referred to as a Fire Batt, these high-density, 60mm thick rock-fibre fireproof slabs are easy to cut and fit around existing services such as pipes and wires, fireproofing for up to 4 hours and offering acoustic protection by impeding or absorbing sound.

Both faces of the fire slab are covered with intumescent anti-fire material which expands during fire to seal against smoke. The included intumenscent joining compound fixes the fire slabs/fire batts together, and the slabs can be over-painted and decorated.

Use in complete walls or large openings where the area needs to be extra strong due to ladders being leant against, etc, raised floors, and unsupported floors under 1m². A fire batt can also be used above door frames, between the head and ceiling.

Slab size

Thickness Coating Slab Size Fire Protection
60mm Doubled sided 1200mm x 600mm Up to 4 hours

Insulation Instructions

Where the slab is in a wall situation, just cut the slab to fit into the opening adhering with the adhesive supplied, ensuring that Envirograf Wraps are fitted around any PVC, copper or steel pipes and PVC electrical trunking.

For steel electrical trunking fit pads inside where passing through the slab. For cable trays, then use Envirograf Product 29 cable tray pillows.

For floor openings 1m² without support. For hole sizes over 1m², firstly fit chicken wire 1½” diameter, support around the perimeter with Envirograf FB/C1 Metal Supports and wire mesh to services passing through the opening. For large openings Product 4 SUP Metal Supports can be used.

Then around any plastic, steel or copper fit Envirograf Intumescent Wrap, around electrical trunking or steel trunking, fit Envirograf Pads and Cable Tray Pillows over cable trays or fit Product 1 Envirograf Pillows around cables that are having to be regularly changed.

The coated slab is ideal for under computer room raised floors as a firebreak. The slab is made of Rockwool. Should you require to be in an area where there must be no fibers then use Envirograf Intumescent Coated Non Fibrous Slabs.

Acoustic Data

The correct use of Coated Batt within structural cavities and voids will reduce the level of transmitted sound:-

  • Rw= up to 52 db (2 x Coated Batts) – incorporating 48mm O/D PVC / 15mm copper pipe penetrations
  • Rw= up to 34 db (1x Coated Batts) – incorporating 48mm O/D PVC / 15mm copper pipe penetration

Material Specification:

  • Rockwool (Slab only) Inert Vitreous silicate mineral wool, Bonded with phenolic / Urea thermoset resin, with up to 0.25% mineral oil, with a surface mastic.
  • Density: 240 Kg/m³ with Mastic, 160 Kg/m³ without Mastic
  • Slab Coat: Aqueous polymer system with inert and fire retardant fillers

Test Details:

Test Integrity Insulation
LPC – TE82610 183 Minutes N/A
Chiltern – RF95001 125 Minutes 125 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.

Product Details
Product 4

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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