Intumescent pipe collar for retro-fit to plastic pipework passing through fire-resistant walls and floors. The intumescent core expands under heat to crush and seal the pipe, maintaining fire integrity. Stainless steel casing, 4-hour fire rating, 10-year guarantee.
Available options and pricing for Intumescent Pipe Collar, with quantity selectors and a running total
Size
SKU
Price
QTY
Total
55mm
487864
£15.60£18.72
—
82mm
487566
£16.28£19.54
—
110mm
487090
£17.63£21.16
—
160mm
487444
£32.90£39.48
—
An intumescent pipe collar is one of those products that sits quietly in the wall doing nothing — until it absolutely has to. Fitted around plastic soil, waste or drainage pipes where they pass through fire-resistant structures, the collar’s job is to respond when everything else is going wrong. In a fire, plastic pipe burns through and disappears, leaving a hole in your fire-rated wall or floor. The intumescent core in this collar reacts to that heat by rapidly expanding inward, crushing the collapsing pipe and sealing off the opening. Fire integrity maintained. Job done.
These collars are designed for retro-fit, so you are not restricted to new builds. The stainless steel outer casing wraps around the pipe and locks in place using a tab-closing device with welded lugs — no special tools, just a straightforward fix. They can be face-fixed directly to a wall or ceiling structure, which is a useful option when you cannot access both sides of the partition. That said, built-in installation is equally supported.
Where Intumescent Pipe Collars Are Used
These collars are suitable for use on concrete, masonry and plasterboard partitions, making them appropriate across a wide range of building types from new housing to commercial refurbishments. The intumescent material itself is resistant to water, non-flaking and difficult to tear, so it holds up in the kind of damp plant-room or service-riser environments where these pipes typically run.
Available in four sizes — 55mm, 82mm, 110mm and 160mm — they cover the standard above-ground soil and waste pipe diameters you will encounter in residential and commercial builds. The 4-hour fire rating applies in both vertical and horizontal applications, which keeps things simple when you are dealing with fire compartmentation requirements across mixed orientations.
This is a fire-stopping product, not an optional upgrade. Building regulations require fire-rated penetration sealing wherever services breach compartment walls or floors, and an intumescent pipe collar is the accepted method for plastic pipe penetrations. Backed by a 10-year guarantee.
Pro Tip: When face-fixing to plasterboard partitions, make sure you are fixing into the board and not relying on it alone for load — use the manufacturer's fixing guidance and ensure the collar sits flush so the intumescent material can expand freely without obstruction from the surrounding finish.
Intumescent pipe collars are used wherever plastic soil, waste or drainage pipes pass through fire-compartment walls or floors in both residential and commercial buildings. They are common in domestic new builds, housing refurbishments, apartment blocks, offices and any building where fire compartmentation is required under building regulations. Plumbers and fire-stopping contractors fit them during first fix or as a retro-fit when fire compliance work is needed on existing structures.
Best For
Plastic soil pipe penetrations through fire-rated walls
Waste and drainage pipe fire stopping
Retro-fit fire compliance work
New build first fix installations
Above-ground applications in vertical and horizontal orientations
Compatible Surfaces
Concrete walls and floors
Masonry partitions
Plasterboard partitions
Ceiling structures
Key Specifications
Available sizes: 55mm, 82mm, 110mm, 160mm
Stainless steel outer casing
4-hour fire rating (vertical and horizontal)
10-year guarantee
Intumescent core: water-resistant, non-flaking
Tab-closing device with welded lugs
Face-fix or built-in installation
Not suitable for: Not suitable for metal or copper pipework, as the intumescent core is designed to crush collapsing plastic pipe only. Not intended for below-ground drainage applications.
Clean the pipe surface and mark the collar position so it sits flush against the wall or floor face. Open the collar using the tab-closing device, wrap it around the pipe at the penetration point, and close it securely. Fix to the structure using the welded lugs and appropriate fixings for the substrate. Ensure no gap exists between the collar and the wall face that would allow fire or smoke to bypass the seal.
On plasterboard partitions, fix into the board at the correct centres and check the collar cannot move once secured. On masonry or concrete, use appropriate anchors for the load. The collar should be installed so the intumescent material faces inward and is unobstructed — do not pack out or over-finish around it in a way that would restrict expansion.
Identify the pipe penetration point and check the surrounding structure meets fire-resistance requirements before fitting
Clean and dry the pipe surface at the installation position
Open the intumescent collar using the tab-closing device
Wrap the collar around the pipe at the wall or floor face, positioning it flush with the structure surface
Close and secure the tab-closing device firmly
Fix to the structure through the welded lugs using appropriate fixings for the substrate
Check the collar sits flat against the surface with no gaps around the perimeter
Record the installation as part of your fire-stopping documentation if required by the project
Can this collar be fitted to an existing pipe that is already installed?
Yes, it is specifically designed for retro-fit. The wrap-around design with the tab-closing device means you do not need to remove or cut the pipe to fit the collar — you open it, wrap it around, and close it in position.
What pipe sizes do these collars fit?
They are available in four sizes: 55mm, 82mm, 110mm and 160mm. These cover the standard above-ground soil, waste and drainage pipe diameters used in residential and commercial buildings.
Is a 4-hour fire rating sufficient for most building regulations requirements?
For the majority of residential and commercial applications in the UK, a 4-hour rating exceeds standard compartmentation requirements, which are typically 30, 60 or 90 minutes. Always verify the specific requirement for your project with your fire strategy or building control.
The collar features a stainless steel outer casing for durability in service conditions, including damp or humid environments. The intumescent core is a graphite-based or similar fire-reactive material that expands rapidly at elevated temperatures, generating sufficient compressive force to crush collapsing plastic pipework and seal the penetration. The material is water-resistant, non-flaking and resistant to tearing, maintaining its integrity between installation and activation. Rated for 4-hour fire resistance in both vertical and horizontal orientations, with a 10-year product guarantee.
Available Sizes
55mm, 82mm, 110mm, 160mm
Casing Material
Stainless steel
Fire Rating
4 hours (vertical and horizontal)
Application Type
Above-ground soil, waste and drainage
Compatible Structures
Concrete, masonry, plasterboard partitions
Installation Method
Retro-fit or built-in; face-fix or flush-mount
Guarantee
10 years
Intumescent Core
Water-resistant, non-flaking, difficult to tear
Size
110mm, 160mm, 55mm, 82mm
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