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Fire Stopping Sealants

Seal up gaps around pipes, cables and services in fire barriers, preventing spread of smoke and fire, with fireproof sealants, foams, fillers and mastic. Intumescent sealants expand in fire to plug holes, or fillers and compounds to repair cracks and damage to fire barriers and surfaces. Fireproof adhesive bonds most materials and surfaces together in fire applications, such as sticking fire sponge into place, reflective foils and fire barrier curtains to trusses and beams, and many other fire-stopping projects.

Fire protection doesn’t have to be hard work, let our technical staff help you get the level of protection you require and the finish you want. If there is a product you cannot find, please contact our Technical and Sales Support Team on 0113 245 5450.

For clarification on minimum requirements before buying one of our fire-stopping products, please review the information provided in the 'DATASHEETS' tab on the product in question. A written specification should be obtained from our Technical Department for your project prior to use to ensure the product will be suitable.

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Astroflame Intumescent Acoustic Mastic | Fire-Stopping Sealant

Astroflame Intumescent Acoustic Mastic

One-part intumescent acrylic mastic for sealing gaps around fire doors, window frames and for sealing joints, voids and irregular holes in fire rated structures. Forms a char, preventing the passage of fire and smoke, when exposed to the heat of a fire. Tested around: metallic pipes, cable trays, cable bunches, small, medium & large...

Price £1.99 (incl. VAT)
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Nullifire FS702 | Intumastic Fire Resistant Acrylic Sealants

Nullifire FS702 Intumastic Fire Resistant Acrylic Sealant

Water-based acrylic sealant which cures to give a firm but flexible fire seal. Suited for use around non-combustible services, cables, rock fibre insulated non-combustible pipes, using a  minimum depth of 25 mm. FS702 has excellent adhesive qualities and can also be used for the bonding and pointing of joints and  service penetrations in...

Price £42.26 (incl. VAT)
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Astroflame Intumescent PFP FR Acrylic Sealant

Astroflame Intumescent PFP FR Acrylic Sealant

Designed to prevent the spread of fire and smoke through joints and openings in fire rated walls and floors (including openings formed around building service penetrations); also maintains the acoustic design performance. Suitable for most surfaces, included concrete, masonry, steel, gypsum, glass, plastics and most non-porous surfaces...

Price £2.93 (incl. VAT)
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Nullifire PR102 PE Joint Backer Rods | Firestopping

Nullifire PR102 PE Joint Backer Rods

Used to control sealant depth in sealant joints, avoiding 3-sided adhesion. Please note: Selected items are Made To Order subject to a MOQ and an extended lead time - see 'Size Reference' below

Price £97.10 (incl. VAT)
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Nullifire FS703 Intusil | Fire-Resistant Sealants

Nullifire FS703 Intusil Fire Resistant Silicone Sealant

Fire-stopping sealant designed for aggressive exterior use on high-sheen surfaces (glass, aluminium) and in high-movement joints for up to 50% movement. Suitable to fire seal joints incompartment walls and floors such as masonry to masonry, masonry to timber, masonry to steel - see the description below for a list of suitable surfaces and...

Price £126.98 (incl. VAT)
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FSi Pyrocoustic Fire Resistant Sealant

FSi Pyrocoustic Fire Resistant Sealant

Water-based acrylic sealant used to reinstate the fire resistance of wall and floor constructions in linear joints and where apertures are penetrated by multiple services. Developed utilizing specialist polymer technologies allowing it to be tested and Certified to internationally recognised standards, including Certifire, CE marking and UL...

Price £49.21 (incl. VAT)
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Rockwool Acoustic Intumescent Sealant | Up to 4 Hours Fire Protection

Rockwool Acoustic Intumescent Sealant

High specification, one part water based acrylic sealant. Acoustic Intumescent Sealant is designed for use in the installation of Rockwool Ablative Coated Batt, sealing linear joints and some individual service penetrations passing through various substrates. Up to 4 hours* fire protection Used to reinstate the fire resistance of wall and...

Price £3.11 (incl. VAT)
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Quelfire QuelStop Intumescent Acoustic Acrylic Sealant

Quelfire QuelStop Intumescent Acoustic Acrylic Sealant

Water-based intumescent acrylic used to provide a fire rated linear joint or gap seal up to 4 hours (EI240), and to maintain the fire rating of walls and floors where they have been penetrated by services as part of the QuelStop Fire Batt System or direct to the substrate. Should be applied to all cuts, joints and exposed edges of the batt...

Price £2.60 (incl. VAT)
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Thermoguard Intumescent Mastic

Thermoguard Intumescent Mastic

A one-part intumescent acrylic mastic for sealing gaps around fire doors, window frames and for sealing joints, voids and irregular holes in fire rated structures. Forms a char, preventing the passage of fire and smoke, when exposed to the heat of a fire. Tested around: metallic pipes, cable trays, cable bunches, small, medium & large...

Price £7.73 (incl. VAT)
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Protecta FR Acrylic 4hr Intumescent Sealant | Joint Fire Protection

Protecta FR Acrylic 4hr Intumescent Sealant

Designed to prevent the spread of fire and smoke through joints and openings in fire rated walls and floors including around building service penetrations. Classified for fire sealing all types of constructions such as drywalls, masonry walls, concrete walls, concrete & composite floors For fire stopping of service penetrations in...

Price £64.78 (incl. VAT)
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FSi Pyrolastic Fire Resistant Silicone Sealant | 240Mins Anti-Fire Protection

FSi Pyrolastic Fire Resistant Silicone Sealant

One-part, neutral curing silicone for construction joints. Pyrolastic cures at room temperature under the action of atmospheric moisture to give a permanently flexible silicone rubber. Prevention of air leakage - Maintains acoustic performance, Assumed working life of 25 years Highly flexible - Cold smoke seal - Wide range of backing...

Price £159.90 (incl. VAT)
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Quelfire QuelStop Intumescent HPE Graphite Sealant

Quelfire QuelStop Intumescent HPE Graphite Sealant

High expansion intumescent acrylic based graphite sealant used to provide a fire rated linear joint or gap seal and to maintain the fire rating of walls and floors where they have been penetrated by services as part of the QuelStop Fire Batt System or direct to the substrate. Up to 4 hours fire rating (EI240). May be used for sealing around...

Price £8.29 (incl. VAT)
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Nullifire FS709 Intumastic | Fire-Resistant Sealants

Nullifire FS709 Intumastic HP Intumescent Sealant

A heat-reactive, intumescent acrylic fire barrier mastic for internal use around services in walls and floors. Seals around pipes, cables and cable trays. Provides up to 4 hours of fire resistance. 60 to 120 min tack time (depending on temperature/humidity).

Price £232.39 (incl. VAT)
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Rockwool High Expansion Intumescent Sealant | Up To 4 Hours Protection

Rockwool High Expansion Intumescent Sealant

Water based acrylic sealant containing graphite. In the event of a fire, the active components provide a high volume expansion and pressure seal, closing off the void left by combustible materials. Reacts to temperatures above 135°C which is used to reinstate the integrity and insulation rating of compartment walls and floors where...

Price £10.96 (incl. VAT)
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Fosroc Flamex Two | Flexible Intumescent Sealant

Fosroc Flamex Two

2-component high performance sealant which forms a tough, flexible rubber-like seal. Extensively fire tested in accordance with BS 476 Pt:20: 1987.  Suitable for fire protection in expansion and construction joints in walls, floors and ceilings, confining smoke and fire, giving extra time for people to escape from a fire situation. Flamex...

Price £160.63 (incl. VAT)
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FSi PyroPro HPE Intumescent Graphite Sealant | Fire Stopping

FSi PyroPro HPE Intumescent Graphite Sealant

Water based acrylic sealant used to reinstate the fire resistance of wall and floor constructions in apertures when penetrated by multiple services. Developed utilizing specialist intumescent technologies which result in the sealant expanding in the presence of heat or fire. Tested with a wide range of services, including plastic pipes,...

Price £150.44 (incl. VAT)
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Sikacryl-621 Fire+ | Resistant Sealant For Interior Joints & Penetrations

Sikacryl-621 Fire+ Resistant Interior Sealant

Restores the fire resistance performance of a floor or wall which incorporates penetration services or linear seals. The extremely versatile 1-part product is ready to use and easy to apply, providing acoustic insulation and up to 4 hours fire resistance. Wide service temperature, from −20 °C min. to +70 °C max. Can be combined with many...

Price £52.40 (incl. VAT)
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Sikasil-670 Fire | Fire Rated Elastic Joint Sealant

Sikasil-670 Fire Rated Elastic Joint Sealant

A fire rated, single-component, moisture-curing, low-modulus elastic joint sealant for linear joints in interior and exterior walls and floors. Designed for fire rated movement and connection joints on porous and non-porous substrates, providing up to 4 hours fire resistance according to EN 1366-4. Good adhesion to many different substrates...

Price £147.20 (incl. VAT)
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Protecta FR Graphite 4hr Intumescent Sealant | Joint Fire Protection

Protecta FR Graphite 4hr Intumescent Sealant

High specification formulation designed to prevent the spread of fire, smoke & gases through openings in fire rated walls & floors. The sealant expands when it is subjected to fire & closes openings around penetrations when combustible or low temperature melting materials have burnt away, sealing difficult services which...

Price £84.71 (incl. VAT)
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Protecta FR ASF 4hr Intumescent Sealant | Joint Fire Protection

Protecta FR ASF 4hr Intumescent Sealant

Designed to prevent the spread of fire, smoke and gases through openings in fire rated walls and floors, specifically linear joints and openings for building service penetrations. The 4-hour rated anti-fire sealant is formulated with fillers that provide noise reduction, creating a robust fire seal by the formation of a durable intumescent...

Price £43.94 (incl. VAT)
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Pyroplex Fire Rated Silicone Sealant | 4 Hours Fire Resistance

Pyroplex Fire Rated Silicone Sealant

1 part, low modulus, neutral cure, halogen-free product suitable for the sealing of construction joints, and around pipe penetrations which have been protected by the recommended Pyroplex intumescent product. Ideal for the weathersealing of curtain walling, building facades and expansion joints in fire rated walls. Fire resistance up to...

Price £161.72 (incl. VAT)
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Alphachem Acoustic Intumescent Sealant | Fire Resistant Sealant

Cromar Alphachem Acoustic Intumescent Sealant

High quality, one part, flexible 5 hour fire rated sealant used to maintain fire performance in walls, floors and penetration seals. It can also be used to form linear gap seals where gaps are present within the wall and floor construction and linear joints. Intumescent properties that cause it to swell upon heating Excellent sound...

Price £23.70 (incl. VAT)
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Astroflame High Pressure Expanding Sealant For Fire Barriers

Astroflame High Pressure Expanding Sealant

An acrylic based graphite sealant used to reinstate the fire resistance performance of wall and floor constructions where they have been provided for the penetration of single or multiple services, to form penetration seals where gaps are present. Expands upon contact with heat (also known as intumescent or reactive material) Suitable for...

Price £68.22 (incl. VAT)
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SikaSeal-623 Fire Resistant Sealant | Up To 4 Hours Fire Resistance

SikaSeal-623 Fire Resistant Intumescent Sealant

A fire resistant, intumescent graphite based sealant for interior penetration seals, restoring the fire resistance performance of a floor or wall which incorporates combustible services like soil and vent pipes or cables. Designed to provide a high volume expansion and pressure seal during a fire to combustible pipes that pass through floor...

Price £88.93 (incl. VAT)
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Sikacryl-620 Fire-Rated Sealant For Linear Joints and Penetrations

Sikacryl-620 Fire-Rated Sealant

Sikacryl-620 Fire is a fire rated 1-component, water- based intumescent sealant, suitable for use in hot and tropical climatic conditions. Designed for fire rated connection joints and penetration seals on porous and non-porous substrates. Sika now offer a Fire Stopping Solution Finder - a useful tool when needing assistance on specifying...

Price £35.22 (incl. VAT)
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Pyroplex CE Intumescent Acrylic | Fire Resistant Sealant

Pyroplex CE Intumescent Acrylic

Norseal Pyroplex CE Intumescent Acrylic, used to form linear gap seals where gaps are present in wall and floor constructions and linear joints where wall and floor constructions abut. Can also be used to form a penetration seal around metallic pipes and electrical cables to reinstate the fire resistance performance of wall and floor...

Price £3.95 (incl. VAT)
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Nullifire FS719 HP Blue For CPVC | Fire Protection Up To 120 Minutes

Nullifire FS719 HP Blue For CPVC

Nullifire FS719 HP Blue For CPVC is a unique sealant developed specifically for CPVC materials. It is used to reinstate the fire performance of compartment lines (walls and floors) which have been breached by CPVC combustible sprinkler systems or other CPVC systems. The product has a distinctive blue colour for easy visual identification and...

Price £242.05 (incl. VAT)
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FSi PyroPro LST Fire Resistant Sealant | London Underground-Approved

FSi PyroPro LST Fire Resistant Sealant

FSi PyroPro LST Fire Resistant Sealant is a water based acrylic sealant which has been developed utilizing specialist materials which significantly reduce smoke and toxic fumes in the event of a fire, therefore is authorised for use on the London Underground network, and other underground/ tunnel networks. Flexible, for use in gaps up to...

Price £111.52 (incl. VAT)
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