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Tubolit Polyethylene Pipe Insulation

Tubolit is the GREAT British polyethylene pipe insulation — a lightweight, closed‑cell foam lagging manufactured in the UK for over 40 years. Designed for domestic heating and plumbing systems, it offers reliable thermal performance, excellent value, and fast national availability. As part of the Armacell family, Tubolit sits alongside advanced elastomeric materials such as Armaflex EVO, giving installers a complete insulation solution for every application.

Made in the UKPolyethylene FoamEasy to Install0.036 W/m·K λ at 0°C9–25 mm ThicknessesFor Domestic Heating & Plumbing

Polyethylene pipe insulation is a lightweight, closed‑cell foam lagging used to reduce heat loss, prevent condensation and protect domestic pipework.

Tubolit Polyethylene Pipe Insulation VIEW ALL

9mm Wall Tubolit

9mm Wall Tubolit Polyethylene Pipe Insulation

13mm Wall Tubolit

13mm Wall Tubolit Polyethylene Pipe Insulation

19mm Wall Tubolit

19mm Wall Tubolit Polyethylene Pipe Insulation

25mm Wall Tubolit

25mm Wall Tubolit Polyethylene Pipe Insulation

Tubolit 1m Boxes

Tubolit 1m Boxed Polyethylene Pipe Insulation

Tubolit 2m Boxes

Tubolit 2m Boxed Polyethylene Pipe Insulation

For a full range of pipe insulation lagging we have available,

see our Pipe Lagging & Pipe Insulation category.

Tubolit Polyethylene Benefits


Tubolit is the GREAT British polyethylene pipe insulation.


Manufactured in Oldham and sold in the UK for over 40 years it is trusted across the UK for domestic heating and plumbing applications.


  • Made in the UK – Manufactured in Oldham, ensuring consistent quality, shorter supply chains and reliable national availability.
  • Closed‑Cell Polyethylene Foam – Naturally low thermal conductivity helps reduce heat loss on heating and hot‑water pipework.
  • Effective Frost‑Protection – When the correct thickness is used, Tubolit helps protect pipes in areas such as lofts and garages.
  • Non‑Particulating Material – Cleaner to handle and suitable for indoor environments, unlike cheaper imported alternatives.
  • Reduces Energy Loss by up to 80% – Helps improve heating system efficiency and reduce running costs.
  • Moisture‑Resistant – Closed‑cell structure does not wick moisture, helping limit condensation and reducing the risk of mould or corrosion.
  • High Standards – Manufactured to EN 14313 and supported by ISO 9001 and ISO 14001 systems.


Practical Advantages


Tubolit is easy to install, making it suitable for both professional installers and DIY users. Its lightweight, flexible construction and clean handling make it ideal for domestic pipework where speed and practicality matter.


  • Lightweight & Easy to Cut – Simple to trim and position, speeding up installation on long pipe runs.
  • Flexible for Tight Spaces – Bends easily around corners and obstacles, ideal for lofts, airing cupboards and retrofit work.
  • Simple to Seal – Can be secured using inexpensive clips or insulation tape. Proper sealing ensures the pipe insulation performs as intended.
  • Cleaner to Handle – Produces no dust or particulates, making it more pleasant to install in occupied homes.
  • Acoustic Dampening – Helps reduce noise transmission from water flow, improving comfort in residential properties.
  • Available in 1m and 2m Boxed Lengths – Convenient packaging options make it easy to transport, store and install on site.
  • Excellent Value – Provides reliable performance at a fraction of the cost of elastomeric or mineral fibre alternatives.

Tubolit Technical Specification

PropertyValue
MaterialClosed-cell polyethylene (PE) foam
Thermal Conductivity (EN ISO 8497) ≈ 0.036 W/m·K at 0°C
≈ 0.040 W/m·K at 40°C
Temperature Range-45°C to +100°C
Fire PerformanceClass E (typical for polyethylene insulation)
Water Vapour ResistanceClosed-cell structure provides inherent moisture resistance
Water Absorption (EN 13472)Low water absorption due to closed-cell foam
Acoustic PerformanceReduces noise transmission from water flow in domestic pipework
Environmental ComplianceCFC/HCFC-free; manufactured under ISO 9001 & ISO 14001 systems
Format1m and 2m boxed lengths; 9–25 mm wall thicknesses; 15–76 mm bores
ApplicationsDomestic heating, hot water, cold water, frost protection, general plumbing

Why Choose UK‑Made Tubolit?

Tubolit is proudly manufactured in the UK, with production based in Oldham and a long history of supplying the British market since the brand was first introduced here in the 1970s. This local manufacturing footprint ensures consistent quality, reliable availability and shorter supply chains compared with imported polyethylene insulation.


  • Made in the UK – Manufactured in Oldham for dependable quality and fast national distribution.
  • Trusted for Decades – Tubolit has been supplied in the UK since the 1970s and remains one of the most widely used PE insulation products for domestic pipework.
  • Stable, Reliable Supply – UK production avoids the delays and variability often associated with imported alternatives.
  • Lower Environmental Impact – Shorter transport distances and local manufacturing help reduce the carbon footprint compared with overseas products.
  • Consistent Quality Control – Produced under ISO 9001 and ISO 14001 systems for long‑term performance and reliability.

Frequently Asked Questions

What is Tubolit pipe insulation?+

Tubolit is a closed‑cell polyethylene (PE) pipe insulation manufactured in the UK. It is lightweight, flexible and designed for domestic heating, hot water and cold‑water services. Tubolit provides reliable thermal performance at an excellent price point.

What is Tubolit made from?+

Tubolit is made from closed‑cell polyethylene foam. This material offers naturally low thermal conductivity, good moisture resistance and clean handling with no particulates or fibres.

Is Tubolit suitable for frost protection?+

Yes. When the correct wall thickness is selected, Tubolit can help protect pipework in unheated areas such as lofts, voids and garages. Thicker insulation is recommended for frost‑prone locations.

What temperature range can Tubolit be used in?+

Tubolit can typically be used between -45°C and +100°C, making it suitable for domestic heating, hot water and cold‑water pipework.

Is Tubolit moisture resistant?+

Yes. Tubolit has a closed‑cell structure that does not wick moisture, helping reduce condensation and lowering the risk of mould or corrosion on pipework.

Is Tubolit easy to install?+

Tubolit is lightweight, flexible and easy to cut, making it suitable for both professional installers and DIY users. It can be sealed using insulation tape or inexpensive plastic clips.

What pipe sizes and insulation thicknesses are available?+

Tubolit is available in common domestic pipe sizes from 15–76 mm, with wall thicknesses of 9 mm, 13 mm, 19 mm and 25 mm. Both 1 m and 2 m boxed lengths are available.

Is Tubolit manufactured in the UK?+

Yes. Tubolit is manufactured in Oldham and has been produced in the UK for over 40 years, offering consistent quality and fast national availability.