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Hot Pipe Insulation

ROCKWOOL’s hot pipe insulation can be installed around hot water pipes, heating and HVAC systems.

Find products Download guide to BS 5422:2023 Cold Pipes
RockLap H&V Pipe Section

Install ROCKWOOL's hot pipe insulation around hot water pipes which are widely used for heating and warm water distribution in buildings. The insulation is designed to carry substances at high temperatures between 0°C and 250°C.

Hot pipe insulation helps to reduce heat loss, maintain consistent temperatures, and protect against dangerous fire hazards.

Whether you're undertaking a new construction project or upgrading existing systems, ROCKWOOL's hot pipe insulation provides thermal protection and energy savings. 

ROCKWOOL offers hot pipe insulation products that are effective for use in HVAC systems and building heating systems. These products can help improve energy efficiency and reduce heating costs.

Explore our range of hot pipe insulation solutions and discover the support, expertise, and resources available.

Table of contents

  1. Why do we need hot pipe insulation
  2. Calculator and savings
  3. Why choose ROCKWOOL solutions
  4. Case studies
  5. Installation
  6. Downloads and resources
  7. Financial support
  8. FAQ
  9. Other relevant applications
Find inspiration, guides and reports

Hot Pipe Insulation Products

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HVAC

RockLap H&V Pipe Sections

ROCKWOOL RockLap H&V Sections are pre-formed sections of stone wool insulation for pipes. Manufactured pre-slit and with a self-adhesive foil lap for ease of application.

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RockLap H&V Pipe Supports

RockLap H&V Pipe Supports are designed for use with pipe hangers, reducing heat loss at support locations. Specify in conjunction with RockLap H&V Pipe Sections for an uninterrupted non-combustible thermal solution.

Why do we need hot pipe insulation?

Hot pipes are widely used for heating and warm water distribution in large buildings and complexes, such as airports, factories and high-rise residential blocks. 

The distances travelled by hot pipes can be long, and the spaces they pass through extremely cold. This is especially true during the autumn or winter months, when the need for them is at its highest. 

Insulation acts to keeps the heat inside the pipes while air or water is being transported from the boiler/heating system to central heating units. This helps ensure minimal temperature loss while in transit, and a comfortable indoor atmosphere.

Installing quality hot pipe insulation means less energy is needed to maintain the desired temperature levels. Energy costs can therefore be far lower, particularly during the winter months.

Fire resilient insulation is also essential for fire protection in HVAC systems. Hot piping may run through construction or factory sites that are full of people – or apartment buildings where people sleep. Shielding workers and occupants from the high temperatures inside, and possible fire hazards, is vital.

Relevant resources
Why stone wool?
Learn more
HVAC Systems Guide
Download here
CPD: A guide to HVAC standards and applications
Book now
CPD: EN Tested Fire Duct Systems
Book now
HVAC Calculator
Access here

Calculator and savings

Insulating the pipework to the standards set out in BS 5422 2009 reduces heat losses by up to 90%.1 This often results in a return on investment within several years of installing. 

Use our HVAC Calculator  to determine the most appropriate HVAC solutions to deliver the required thermal, acoustic and fire performance.

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Why choose ROCKWOOL solutions?

ROCKWOOL products offer the highest levels of performance and quality. We have a considerable amount of experience in supplying premium stone wool.  

 

Key benefits: 

  • Robust and durable – ROCKWOOL pipe sections will maintain their thermal performance over a period of not less than 70 years. Our products don’t dip in performance over the lifetime of their use – giving you strong returns on your investment2.
  • Dimensional sustainability - ROCKWOOL hot pipe insulation won’t shrink or expand when faced with high temperatures. keeping unwanted joints and gaps away.
  • Fire protection – stone wool is fire resilient, withstanding temperatures above 1000°C to protect people and buildings.3
  • Noise reducing – the sound absorption properties of stone wool help dampen unwanted noise caused by substances travelling through pipes.4
  • Sustainable – our products can be recycled repeatedly. When insulation isn’t needed in a building anymore, it can be repurposed for new products.5

 

 

Find ROCKWOOL products
We spend time, money and resources when developing and testing our products to ensure we deliver the best solution for your application – guaranteeing the highest quality available.

Rob Kooiker

ROCKWOOL Group Product Manager

Case studies

 

The challenge

In meeting the specification for Morriston Hospital, building services consultants, ARUP, considered a range of factors to select the right insulation for the project. These included sustainability, performance and ease of installation. As a healthcare project, the construction also had to comply with BS 5422:2009 and HTM 05-01: Managing healthcare fire safety which recommends only non-combustible products are used in a building. As a result, ARUP specified ROCKWOOL stone wool insulation as the preferred solution.

 

The solution

ARUP selected a combination of ROCKWOOL products to meet Morriston Hospital's pipe and ductwork insulation requirements. Over 5000 l/m of RockLap H&V Pipe Sections, and Ductwrap & Ductslab, were supplied by SIG Technical Insulations to insulation contractors Denco Thermal Ltd who experienced first-hand how easy it is to cut and install ROCKWOOL insulation.

 

The results

“In our experience, ROCKWOOL stone wool performs better than many alternatives on the market. For Morriston Hospital, ROCKWOOL stone wool insulation fitted the bill perfectly as it's a non-combustible material and sustainable too. This gave us a lot of confidence towards our aim of achieving a BREEAM Excellent rating on this project. It gave us huge peace of mind from a design perspective that ROCKWOOL could be used on the modular and traditional pipework insulation. This removed any potential interfacing issues for us. Because ROCKWOOL is suitable for all types of pipe, it also meant that there was no risk of the insulation being installed on the wrong pipe, which is always reassuring to hear as a specifier.”

Hywyn Jones ARUP Cardiff, Senior Mechanical Engineer

Find more case studies
Morriston Hospital
In our experience, ROCKWOOL stone wool performs better than many alternatives on the market. For Morriston Hospital, ROCKWOOL stone wool insulation fitted the bill perfectly as it's a non-combustible material and sustainable too. This gave us a lot of confidence towards our aim of achieving a BREEAM Excellent rating on this project.

Hywyn Jones

ARUP Cardiff, Senior Mechanical Engineer

Installation

Our solutions can be installed across various types of piping with ease.

 

Key tips:

  • Joints in-between each section can be sealed with the self-adhesive overlap and special aluminium tape.
  • When insulation reaches the end of pipes, it can be cut precisely using a long-bladed knife or insulation saw.6
  • If you’re unsure how much insulation is needed for your application, contact our offices to get advice on the right quantity to order.7
Installation guides for professionals

Downloads and resources

To be updated
PDF
13.0 MB

HVAC Systems Guide

Download
To be updated
PDF
1.1 MB

HVAC Specification Guide

Download
To be updated
PDF
1.2 MB

RockLap H&V Pipe Section Packaging Guide

Download
To be updated
PDF
1.4 MB

Thickness of ROCKWOOL Insulation

Download

Download our HVAC Systems Guide

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PDF
13.0 MB
21 Sep 2023

The ROCKWOOL HVAC Systems Guide

A comprehensive guide to our full range of HVAC solutions

Financial support

Check the Energy Savings Trust website to see whether there are any financial support schemes available for hot pipe insulation.

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FAQs

What is the best insulation for hot water pipes?
Does pipe insulation need to be tight?
How hot can pipe insulation get?

Other relevant applications

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Cold Pipe Insulation

Cold pipe insulation can help ensure drinking water and cool air in buildings is kept at the desired temperature.

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Passive Fire Protection

Fire protection solutions can help secure occupant safety and raise buildings’ fire resilience. Discover the benefits of ROCKWOOL insulation today

References

[1] https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/376181/ECA765_Pipework_Insulation_Equipment.pdf

[2] FIW, Durability Project Mineral Wool (2016), p. 29, Chapter 7 “Conclusions and Outlook” + EN 13162 “Thermal insulation products for buildings - Factory made mineral wool (MW) products – Specification. https://fiw-muenchen.de/media/publikationen/pdf/fiw_jahresbericht_2016.pdf

[3] https://www.rockwool.com/group/why-stone-wool/fire-resilience/

[4] https://www.rockwool.com/group/why-stone-wool/acoustic-capabilities/

[5] ROCKWOOL Group, Sustainability Report 2019, p. 17. https://www.rockwool.com/group/about-us/sustainability/sustainability-report/

[6] https://www.rockwool.com/group/our-thinking/renovation/craftsmen-renovation/tips-and-tricks-installation/

[7] https://www.rockwool.com/group/our-thinking/renovation/craftsmen-renovation/tips-and-tricks-installation/

[8] FIW, Durability Project Mineral Wool (2016).https://fiw-muenchen.de/media/publikationen/pdf/fiw_jahresbericht_2016.pdf

[9] IPCC 2018 Report, Chapter 2, p. 65. https://www.ipcc.ch/sr15/download/

[10] ROCKWOOL Group, Sustainability Report 2019, pp. 17, 35. https://www.rockwool.com/group/about-us/sustainability/sustainability-report/

[11] FIW, Durability Project Mineral Wool (2016). https://fiw-muenchen.de/media/publikationen/pdf/fiw_jahresbericht_2016.pdf

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