Intumescent Letter Box Units provide fire protection on doors for businesses and homes. The fireproof letterbox unit protects against fire and smoke for up to 1 hour; lockable letter flaps are available allowing the rear of the fire rated letterbox to be fastened shut, preventing materials from being posted through with the intention of...
Envirograf Intumescent Coated Fireproof Sponge
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
Up to 1 hour protection (1m length)
|Ref||Depth Into Wall||Thickness||Gap Size|
1m x 1m Sheets
Up to 2 hours protection (1m length)
|Ref||Depth Into Wall||Thickness||Gap Size|
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.
Uses in the workplace
Non-fibrous, the sponge is great for use in hospitals and computer rooms, forming a barrier. These fire barriers not only protect from fires trying to escape but also flames and smoke that originate from other parts of a building, attacking expensive computers, components and machinery that may house countless data and information.
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.
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
|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 Conditions. We 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.
Be the first to ask a question about this product!
Firetherm Intucompound, a fire-stopping compound for creating a fire barrier and sealing around static joints, services and ducting in walls and floors. Asbestos, fibre and halogen-free Good workability Exceptional yield Easy to mix, with good flow Use in dry internal conditions Can be made water resistant with a suitable coating at...
Firetherm Intudeck provides up to 90 minutes fire resistance under timber floors and is ideal for installing above ceilings that can't be disturbed, such as decorative or made from lath and plaster. 1200 x 600 x 70 mm size Contact our sales team on 0113 2455450 if custom sizes required Up to 90 minutes fire protection Simple...
Envirograf Acoustic, Draught, Smoke and Weather Threshold Seals are aluminium or plastic holders fitted with a brush seal available in 15mm, 25mm and 50mm standard brush depths. For sealing the bottom of doors, the back edge of sliding doors, between the wall and door, down the centre of the stiles of doors or sealing over tiled floors and...
Protecta FR Service Transit, intumescent pipe & cable sleeves that help maintain fire resistance of walls & floors breached by continuous cables, conduits & plastic pipes, providing fire protection integrity & insulation for up to 240 minutes. Safe, easy & quick to fire stop service penetrations - ideal for retrofitting...
Intumescent Material & Paneled Door Upgrade, a system of full kits in satin, matt or gloss finishes, and their individual components (veneers, intumescent cloths, adhesive) for upgrading doors to fire-rated doors. Click to jump down to ordering references (sizes and contents) below Cost-effective and maintains the original character of...
This CV Strip Cavity Barrier is a thin and flexible 5mm PVC strip, self-adhesive and foil-clad with intumescent that expands in fire to form a seal in cavities 25-120mm. Ideal for use around door & window frames, behind PVC windows, timber-framed houses, etc. Check sizes below For timber & masonry cavities Very easy to fix...
Use an AVG Acoustic Ventilation Grille for sound protection through partition walls. Made to order - prices on request. Please contact our Technical Support team on 0113 245 5450, or send us a message here. 2 parts supplied, for each side of an opening Allows ventilation of rooms, dampening transfer of sound
Nullifire FS705 Intumescent Sealant is a graphite based product which when exposed to fire expands protecting penetrations including cables, cable bunches, cable trays, plastic and metallic pipes. FS705 maintains the integrity and insulation performance of the seal through masonry and plasterboard.
A versatile Multi Purpose Box sealing existing services that pass through a fire wall or barrier, filled with intumescent material & fire-resistant sponge smoke seal. Use on walls, floors and ceilings Detachable top for fitting around existing surfaces Up to 4 hours fire protection Can be surface-mounted or recessed Adjustable...
Protecta FR Board, designed to prevent the spread of fire & smoke through openings in fire rated walls & floors with multiple installed building services. Permanently flexible, it will maintain the acoustic design performance in fire rated walls & floors, accommodating movements during fire & smaller movements in the...
Fix the FB 90/100 Fire Barrier Curtain With Radiant Heat Protection to timber & steel trusses, between concrete soffits and suspended ceilings, etc, with up to an hour of fire protection. See below for references & accessories Curtains priced per linear metre Supplied with metal fixings for timber Adhesive supplied for...
The Economy Letterbox with Intumescent Liner is a fireproof letterbox that prevents the spread of smoke and fire to up to an hour, also sealing against draughts and weather. Useful in areas susceptible to vandalism or arson. Anti arson letterbox with up to an hour of fire protection Ideal for areas with a high threat of arson or vandalism...
Envirograf Intumescent Toilet & Bathroom Ventilation Outlet Protection for wall and ceiling outlets that connect to toilet and bathroom ventilation fans, up to an hour of fire protection. See sizes and configurations below Easy installed in minutes Can be bent to fit curved PVC pipes Liners available for cavity walls, suspended...
Intumescent Downlighter Covers provide fire protection in plasterboard and suspended ceilings, for up to an hour. Covers downlighters, transformers and loudspeakers. Other sizes made to order. Protects without overheating Easy to install in minutes, from below or above Loft covers available Refer to sizes below Loft covers only...
Intustrap/Intuband - Intumescent pipe wraps for sealing off combustible pipes during a fire to prevent the spread of smoke and flames. Easy to fit Available in rolls and strips Pre-configured pack for proprietary pipe sizes For metal and plastic pipes Expands when attacked by fire Fully tested for up to 240 minutes fire integrity and...