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Astroflame Products

Astroflame fire-stopping systems and hardware are designed for installation in a variety of settings, including service penetrations, ducts, and compartmentation zones. In addition to fire protection, many solutions also support acoustic performance, control air and water permeability, and accommodate structural movement. Engineered for compliance and long-term performance, Astroflame products are essential for passive fire protection across commercial, industrial, and residential sectors.

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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 £2.15 (incl. VAT)
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Astroflame Fire Rated Putty Pads & Cords | Electrical Fire Stopping

Astroflame Fire Rated Putty Pads & Cords

Easy to apply fire and sound rated sealant supplied as a non-setting putty. The putty is hand workable, reusable and re-serviceable due to its non-setting properties. The putty is manufactured and supplied in different shapes and forms for different applications - sockets, fire sealing services and water supply boxes. CE marked certified...

Price £2.21 (incl. VAT)
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Astroflame Fire & Acoustic Internal Socket Box Insert | Electrical Fire Stopping

Astroflame Fire & Acoustic Internal Socket Box Insert

Restore the fire rating of a wall otherwise compromised by apertures and gaps following the fitting of socket boxes, also restoring acoustic and thermal performance of the wall and its air-tightness. Easy to install putty pad alternative Single and Double socket sizes available Tested to BS EN 1366-3 for up to 120 mins Provides an...

Price £1.73 (incl. VAT)
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Astroflame X-Series Intumescent Fire Pillows | Fire Protection Around Services

Astroflame X-Series Intumescent Fire Pillows

Designed to provide an effective fire barrier, on a temporary or permanent basis, for services which are subject to frequent changes or replacement. Pillows can be added, removed or rearranged in an aperture to accommodate to the needs of the situation and have been tested with metallic pipes, cables, cable bunches, cable trays and cable...

Price £4.43 (incl. VAT)
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Astroflame Astro Strip Intumescent Fire and Smoke Seals | Fire Door Upgrades

Astroflame Strip Intumescent Fire and Smoke Seals

Intumescent fire and smoke seals for fire door assemblies for fitting into a rebate to either the eaves or the frame of a door. In the event of a fire the seal expands (intumesces) to many times its original volume and seals the gap around the door to provide a safe and effective barrier against the passage of fire, smoke, and hot gases....

Price £0.46 (incl. VAT)
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Astroflame Acoustic Rated Automatic Door Bottom Seal

Astroflame ASDB/SM Acoustic Rated Automatic Door Bottom Seals

Automatic door bottom seal which is spring loaded to lift clear of the floor as soon as the door leaf is opened by a few millimetres. Surface Mounted door bottom seal - drop down type Suitable for wooden or metal door assemblies Aluminium body with rubber coextruded seal and carrier Sound reduction of up to Rw 37dB* Suitable for new and...

Price £18.67 (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 £3.06 (incl. VAT)
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Astroflame Blue 60 Fire Rated Frame Foam | Anti-Fire for Timber Doorsets

Astroflame Blue 60 Fire Rated Frame Foam

Specially formulated expanding foam that, when used in conjunction with Blue 60 fire rated packers (available from the drop-down menu below), gives up to 60 minutes fire protection to timber doorsets without the use of additional mastics or sealants. Please note: Astroflame Blue 60 Packers MUST be purchased with each box of Astroflame Blue 60...

Price £210.83 (incl. VAT)
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Astroflame Intumescent PFP Pipe Closer | Plastic Pipe Fire Collars

Astroflame Intumescent PFP Pipe Closer

Designed to maintain the fire resistance of fire rated walls and floors where these are breached by continuous plastic pipes. Can be used in gypsum, masonry and concrete walls and with concrete floors. CE Marked For pipe sizes from smallest pipes available to Ø315 mm with a wide range of pipe wall thicknesses Smaller pipes can be fitted...

Price £6.32 (incl. VAT)
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Astroflame Intumescent 30 Min Fire Rated Telescopic Letterbox System

Astroflame Intumescent Fire Rated Telescopic Letterbox System

Specifically designed to increase the safety and security of occupants against fire and is particularly suited to multiple occupancy residential buildings. Stylish, ABS framed, telescopic letterbox with metal flaps fitted with a high performance intumescent liner around the telescopic sleeve section. 30 minute fire rated letterboxes...

Price £13.86 (incl. VAT)
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Astroflame ASP Acoustic Smoke & Perimeter Seals | Fire Door Upgrades

Astroflame ASP Acoustic Smoke & Perimeter Seals

For proprietary fire doors - acoustically and smoke tested. Smoke tested in accordance with BS EN 1634-3: 2004. Suitable for new and retrofit. Easy to install ASP self adhesive seals. Sound reduction: - Up to Rw39dB* (single seal)- Up to Rw35dB* (twin fin).

Price £2.50 (incl. VAT)
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Astroflame Air Transfer Face Plates | Firestopping FOr Walls & Doors

Astroflame Air Transfer Face Plates

Mild steel louvered grilles designed to satisfy all types of air transfer application in offices, shops, schools, hospitals and many other commercial projects. Suitable for internal, surface mounting on doors and walls. The steel construction ensures that the unit is satisfactory not only for Astroflame Intumescent Fire Grilles but can also be...

Price £5.05 (incl. VAT)
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Astroflame ASDB/X Acoustic Rated Automatic Door Bottom Seals

Astroflame ASDB/X Acoustic Rated Automatic Door Bottom Seals

Consists of 3 products: ASTRO ASDB SEAL - Rebate Fit Version: An automatic door bottom seal which is spring loaded to lift clear of the floor as soon as the door leaf is opened by a few millimetres.ASTRO ASDBX DB PLUS SEAL - An automatic door bottom seal which is spring loaded to lift clear of the floor as soon as the door leaf is opened by a...

Price £11.34 (incl. VAT)
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Astroflame Flexiseal Intumescent Sheets for Door Ironmongery

Astroflame Flexiseal Intumescent Sheets for Door Ironmongery

Ultra thin and flexible high performance intumescent sheet. At 0.8mm Astroflame Flexiseal offers high levels of expansion and insulation preventing heat transfer on ironmongery rebated into timber doorsets. All ironmongery installed on a fire door must be fitted without compromising the integrity of the complete fire door assembly. This is of...

Price £1.34 (incl. VAT)
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Astroflame Intumescent PFP FR Pipe Wraps | Fire Protection For Plastic & Metal Pipes

Astroflame Intumescent PFP FR Pipe Wraps

Maintain the fire resistance of fire separating walls and floors when these are breached by plastic pipes, conduits or metal pipes with continuous combustible insulation, and may be used in drywalls, masonry or concrete walls and concrete floors. Each pipe wrap consists of a graphite based reactive intumescent strip, which reacts to heat and...

Price £2.66 (incl. VAT)
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Astroflame Fire Rated Ceiling Air Valves | Ceiling Fire Protection

Astroflame Fire Rated Ceiling Air Valves

Provides fire protection in ceilings, activating when attacked by fire to prevent spread of smoke and flames for up to 60 minutes. Maintains the integrity of fire rated floor/ceiling construction for up to one hour. Tested to BS1365-2:1999. Tested to BS5476: Part 20: 1987. Meets the requirements of Building Regulations Document B. Fits...

Price £28.15 (incl. VAT)
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Astroflame X Series CE Intumescent Pipe Collars | Fire Protection For Plastic Pipes

Astroflame X Series CE Intumescent Pipe Collars

Used around combustible pipes to form a penetration seal used to reinstate the fire resistance performance of wall and floor constructions, where they have been provided with apertures for the penetration of combustible pipe services. The collars include an intumescent component incorporated into a mild steel case to close any gaps and joints...

Price £7.09 (incl. VAT)
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Astroflame PFP Fire Resistant Boards | For Walls & Ceilings With Services

Astroflame PFP Fire Resistant Boards

Designed to prevent the spread of fire and smoke through openings in fire rated walls and floors where openings are formed to allow the installation of multiple building services. Coated both sides, all raw edges need to be coated with Astro PFP FR Coating. Astroflame PFP FR Board Coating or Astroflame Intumescent PFP FR Acrylic Sealant must...

Price £27.04 (incl. VAT)
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Astroflame Intumescent Fire Grilles | Fire Protection In Doors & Walls

Astroflame Intumescent Fire Grilles

A durable ventilation grille which is easily mounted in solid timber fire doors & solid block walls, and can provide in excess of 1/2 or 1 hour fire protection. Fire Grilles tested to: BS 476: Part 22 1987 and EN 1634: Part 2. Comprehensive range of fire grille sizes - Choose height and width below; note all grilles are 42mm thick....

Price £19.42 (incl. VAT)
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Astroflame Intumescent Fire Grille & Air Transfer Face Plate Kits

Astroflame Intumescent Fire Grille & Air Transfer Face Plate Kits

Consists of 1 x Astroflame Intumescent Fire Grille with 2 x Astroflame Air Transfer Face Plates. The kit is then easily mounted in solid timber fire doors & solid block walls, and can provide in excess of 1/2 or 1 hour fire protection. Fire Grilles tested to: BS 476: Part 22 1987 and EN 1634: Part 2 Comprehensive range of kit sizes -...

Price £29.52 (incl. VAT)
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Astroflame X Series CE Intumescent Pipe Wrap | Fire Protection For Plastic Pipes

Astroflame X Series CE Intumescent Pipe Wrap

Used around combustible pipes to form a penetration seal used to reinstate the fire resistance performance of wall and floor constructions, where they have been provided with apertures for the penetration of combustible pipe services. They can be installed in flexible wall, rigid wall, rigid floor constructions and with Batt systems....

Price £2.14 (incl. VAT)
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Astroflame Contract Fire Rated Door Viewer | Fire Door Upgrades

Astroflame Contract Fire Rated Door Viewer

Fire rated for 30 minutes, offering a 180 degree view, suitable for a telescopic size of 35mm - 54mm. Privacy cover door viewer, glass lens with shutter 14 mm size BS476 Part 22 fire tested BS EN 1634-1 fire tested Intumescent protection included Available in a Satin Chrome, Chrome and Brass colour More Info View Similar...

Price £6.36 (incl. VAT)
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Astroflame Fire Resistant Batt

Astroflame Fire Resistant Batt

Specifically designed for sealing around service penetrations in walls and floors, a single Astroflame board (50mm or 60mm thick) can provide high levels of fire integrity and insulation. Tested in Block Wall, Concrete, Masonry, Plasterboard Partition and tested in Concrete Floors. Astroflame Fire Resistant Batt Coating Spray Grade,...

Price £29.72 (incl. VAT)
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Astroflame Low Profile Intumescent Duct Sleeves | 2 Hour Fire Protection

Astroflame Low Profile Intumescent Duct Sleeves

A more compact version of the original Astroflame Duct Sleeve that offers the same industry leading fire performance, maintain the integrity of fire rated walls penetrated by plastic ventilation ducts. In the event of a fire the intumescent material of the duct sleeve expands and crushes the plastic ventilation duct, closing off this route to...

Price £20.02 (incl. VAT)
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Astroflame Intumescent Down Light Covers

Astroflame Intumescent Down Light Covers

Developed to cover maximum protection for holes created by the introduction of a downlighter and to allow for maximum ease of fitting. Downlight Fire Hoods fire rated to BS EN 1365-2:2000 / BS476 Part 23:1987 30 or 60 minute fire rating Covers a wide range of mains & low voltage downlighters Choice of 5 sizes Provides a highly...

Price £11.35 (incl. VAT)
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Astroflame Clad Ventilated Fire Barriers | For 15mm to 125mm Cavities

Astroflame Clad Ventilated Cavity Fire Barriers

Prevents fire spread and provide compartmentalisation in the external façade. Astroflame fire-rated cavity seals maintain ventilation under normal conditions but expand in a fire to seal the cavity and prevent fire spread. Astro Clad Ventilated Fire Barriers provide essential compartmentalisation for external façades. Before use, all cavity...

Price £0.00 (incl. VAT)
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Astroflame Thermal Fire Pipe Sleeves | Up To 2 Hours Fire Rating

Astroflame Thermal Fire Pipe Sleeve

A cost effective solution for the fire stopping of pipe penetrations, e.g. plumbing pipe and metallic pipes, whilst maintaining similar thermal and acoustic properties as standard mineral fibre insulation. These properties ensure compliance to water bye laws and building regulations for cold and hot water pipes and heating systems. CE...

Price £25.13 (incl. VAT)
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Astroflame Intumescent Duct Sleeve | Ventilation Fire Protection

Astroflame Intumescent Duct Sleeve

Intended for use where a ventilation duct passes through a fire rated wall, maintaining the integrity of the fire rated wall which would otherwise be lost. In the event of a fire, the advanced Duct Sleeve will expand with the heat, crushing the duct and closing off the hole to the fire for at least 120 minutes except the 220x90mm version which...

Price £24.35 (incl. VAT)
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Astroflame Intumescent Fire & Smoke Rated Telescopic Letterboxes

Astroflame Intumescent Fire & Smoke Rated Telescopic Letterboxes

Robust commercial metal framed telescopic letterbox with metal flaps and a high performance intumescent liner, fire and smoke rated for 30 or 60 minutes. In the event of a fire the intumescent liner expands to seal the letterbox aperture and retains the fire integrity of the door. Fitted with brush pile draught excluders and sound dampening...

Price £25.55 (incl. VAT)
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Astroflame Fire Resistant Batt Coating Trowel Grade

Astroflame Fire Resistant Batt Coating Trowel Grade

1 part intumescent acrylic mastic - only compatible for use with Astroflame Fire Resistant Batts and cannot be used with any other Fire Batts -  for sealing gaps around fire doors, linear joints, penetration seals, voids and irregular holes in fire rated structures. The sealant forms a char, preventing the passage of fire and smoke, when...

Price £30.74 (incl. VAT)
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Astroflame Intumescent Aluminium Door Edge Guards | Fire Door Upgrades

Astroflame Intumescent Aluminium Door Edge Guards

Intumescent and smoke seals fully fire tested up to 1/2 or 1 hours and eliminate the need for repetitive maintenance. Fire tested to BS476 Part: 20 & 22 for 30-60 minutes and EN1634 to 30 mins Eliminate the need for repetitive maintenance Impact protection for both single & double fire doors Suits new & existing fire doors...

Price £130.66 (incl. VAT)
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Astroflame PFP FR EX Mortar | Fire Rated Compound

Astroflame PFP FR EX Mortar

A dry white powder consisting of inorganic compounds and perlite that, when mixed with water, the compounds form a highly thermally insulating fire sealing compound to prevent the spread of fire and smoke through openings in fire rated walls and floors, including openings formed around building service penetrations. The intended application...

Price £23.56 (incl. VAT)
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Astroflame High Security Fired Rated Door Viewer | Fire Door Upgrades

Astroflame High Security Fired Rated Door Viewer

A door viewer with extra security features and designed for a wider range of users than standard door viewers. Fire Rated for 60 minutes - Timber Doors - and 30 minutes - Composite Doors Suits 35mm - 62mm thickness doors Person viewing can be seated or standing Well suited to wheelchair users or children Prism system permits viewer...

Price £20.24 (incl. VAT)
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Astroflame Fire-Stopping Solutions


Astroflame supplies a broad range of fire-stopping products designed to limit fire and smoke spread through walls, floors, ceilings, and service voids. This includes fireproof sealants and adhesives, intumescent mastics, fire collars, pillows, wraps, door seals, and purpose-built fire barriers. These products play a key role in restoring compartmentation where services penetrate fire-rated structures.

Each system is tested and certified for use in common construction details, providing robust resistance not only to fire but also air and water permeability. Many products also contribute to noise reduction and support movement between building elements, helping maintain compliance with modern building regulations.

Astroflame’s range is engineered to work alongside fire retardant paints, creating a complete passive fire protection solution. Together, they provide enhanced safety by slowing the ignition and spread of fire while preserving the structural integrity of the building.

Designed for ease of use by professionals in construction, refurbishment, and maintenance, Astroflame’s hardware and materials are suitable for projects across sectors including healthcare, education, commercial premises, and multi-occupancy housing.

Astroflame Fire-Stopping FAQs


Where are Astroflame fire-stopping products used?

They are suitable for installation in walls, ceilings, floors, ducts, service penetrations, doors, and other fire-rated elements.

Do these products meet UK fire safety regulations?

Yes, Astroflame products are tested to British and European standards, including BS EN 1366 and BS 476.

Can they be used with other fire protection systems?

Yes, Astroflame products are designed to complement systems such as fire retardant paints, intumescent coatings, and fire doors.

Are they suitable for use in residential buildings?

Yes, the range includes solutions tailored for houses, flats, and multi-occupancy dwellings, as well as commercial and industrial sites.

What types of movement can they accommodate?

Many products allow for linear expansion, vibration, and minor structural shifts without compromising fire integrity.