If you’ve ever wondered how much it costs to line a chimney, you’re in the right place.
Chimney lining might not be the first thing that comes to mind when you think about home maintenance, but it’s an essential part of ensuring your chimney functions safely and efficiently.
In this guide, we’ll break down the factors that influence the cost of lining a chimney, the average prices you can expect, and the key things to consider.
What is Chimney Lining?
A chimney liner is essentially a protective layer installed inside the chimney flue.
It serves to protect the chimney walls from corrosion and heat, prevent leaks of dangerous gases like carbon monoxide, and improve the overall efficiency of your heating system.
Without a proper liner, your chimney is at risk of damage, which can lead to costly repairs and even hazards to your home.
Importance of Chimney Lining
Chimney lining isn’t just about improving performance; it’s about safety.
A well-installed chimney liner keeps harmful gases from entering your home and also helps to prevent chimney fires.
In fact, many building regulations require chimneys to be lined, especially for solid fuel and gas appliances.
Factors That Affect the Cost of Lining a Chimney
When it comes to the cost of chimney lining, there isn’t a one-size-fits-all answer.
Several factors influence the price, from the type of liner to the size and condition of your chimney.
Type of Liner Material
The type of material used for your chimney liner is one of the biggest factors affecting the overall cost.
There are several types of chimney liners, and each comes with its price tag.
Stainless Steel Metal Liners
Stainless steel is one of the most common choices for chimney liners. It’s durable, resistant to corrosion, and suitable for all fuel types, including wood, gas, and oil. However, its longevity and versatility come with a higher price.

Used for lining an existing chimney stack, generally seen on older properties. The most common method for lining a chimney in the UK.
Expect to pay between £900 and £2,500, depending on the size of your chimney.
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This is for supply and installation, although a stainless flue liner will normally include an appliance along with other component parts so the overally cost will likely be more.
Clay Tile Liners
Clay tile liners are a more traditional option, often found in older homes.

They are less expensive upfront, ranging from £500 to £1,500. However, clay tile liners are harder to install and maintain, which can increase the overall labour cost.
Cast-in-place Liners
Cast-in-place liners involve pouring a cement-like material down the chimney to create a seamless, custom-fit liner.
They offer excellent insulation and longevity but are also one of the most expensive options, typically costing between £1,500 and £3,000.
Aluminium Liners
Aluminium liners are suitable for gas appliances, but they aren’t as durable as stainless steel.
While cheaper—ranging from £400 to £1,000—they’re not recommended for solid fuels, making them a limited option.
Pumice Chimney Liners
Pumice chimney liners are known for their excellent durability and insulation, making them an ideal choice for homeowners with solid fuel heating systems.
The cost of installing a pumice liner typically ranges between £1,200 and £3,500, depending on the size and height of the chimney.

Pumice chimney systems are generally used on new build projects which do not require an internal metal chimney lining, the appliance (wood burning stove) is connected to a starter block at the bottom.
While they are more expensive than options like clay or aluminium liners, their long lifespan and efficiency can make up for the higher upfront cost.
Installation usually requires professional help due to the complexity, adding around £500 to £1,000 to the overall cost.
Despite the price, pumice liners are a worthwhile investment for those looking for long-term performance and reduced maintenance needs.
Size and Height of the Chimney
The size and height of your chimney will directly impact the cost of the liner. Taller chimneys require more material and more labour, driving up the price.
Additionally, wider chimneys need larger or thicker liners, which also increase costs.
Labour Costs
Labour costs can vary significantly depending on where you live and the complexity of the installation.
In the UK, labour for chimney lining generally ranges from £300 to £1,000. Urban areas often have higher labour costs than rural regions.
Accessibility and Location
If your chimney is difficult to access, either because of its height or location, this can increase labour costs. Prices in the South tend to be higher than the North of the UK.
Similarly, if scaffolding or other specialised equipment such as a cherry picker is required, expect to pay more.
Condition of the Existing Chimney
Before installing a new liner, the existing chimney must be in good condition.
If repairs are needed, such as fixing cracks or clearing blockages, this can add to the overall cost. Some homeowners face additional fees for structural repairs.
Additional Services or Repairs Needed
You may also need additional services, such as cleaning, inspections, or installing a new chimney cap.
These services typically range from £100 to £500 but can add to the total cost of the project.
Average Cost of Lining a Chimney by Material
Let’s break down the average costs based on the type of liner material you choose:
Stainless Steel Liner Costs
Stainless steel liners typically cost between £900 and £2,500, including installation. Their durability and versatility make them a popular choice for many homes.
Clay Tile Liner Costs
Clay tile liners are cheaper upfront, ranging from £500 to £1,500, but they can be more costly in the long run due to maintenance needs.
Cast-in-place Liner Costs
Cast-in-place liners are more expensive, with average costs between £1,500 and £3,000. However, they offer excellent durability and insulation.
Aluminium Liner Costs
Aluminium liners are the least expensive option, costing between £400 and £1,000. However, they are only suitable for gas appliances, limiting their usefulness for many homes.
DIY vs Hiring a Professional
You might be tempted to save money by installing the chimney liner yourself, but is it worth it?
Pros and Cons of DIY Chimney Lining
While DIY chimney lining can save you money upfront, it’s a complicated process that requires specialised tools and knowledge. Improper installation can lead to serious safety risks, including chimney fires and gas leaks.
Benefits of Hiring a Professional
Hiring a HETAS professional ensures that the job is done correctly, safely, and in compliance with local building regulations. A professional will also spot any potential issues with your chimney and fix them before they become costly problems.
How to Choose the Right Chimney Liner for Your Home
Several factors come into play when choosing the best liner for your chimney:
Fuel Type and Usage
The type of fuel you use—whether wood, gas, or oil—will influence the type of liner you need. Some materials, like aluminium, are only suitable for gas, while stainless steel works for all types.
Durability and Maintenance Requirements
Stainless steel liners are the most durable, while clay tile liners require more frequent maintenance. Consider how much maintenance you’re willing to perform when selecting a liner.
Building Regulations and Safety
Ensure that your chosen liner meets local building regulations. A professional can help you navigate these requirements and ensure the installation is safe and compliant.
How Often Should a Chimney Liner Be Replaced?
Most chimney liners last between 15 and 50 years, depending on the material and usage. Stainless steel liners, for example, can last up to 50 years with proper maintenance.
Signs Your Chimney Liner Needs Replacing
Look out for signs like smoke in your home, rust on the chimney cap, or cracks in the chimney walls. These can indicate that your liner needs to be replaced.
Conclusion
Lining your chimney is essential for both safety and efficiency. The cost of lining a chimney varies depending on the material, size, and condition of your chimney.
While DIY can seem tempting, hiring a professional ensures a safe and proper installation, which is worth the investment.
Aluminium liners are typically the cheapest, costing between £400 and £1,000, but they are only suitable for gas appliances.
Chimney liners can last anywhere from 15 to 50 years, depending on the material and how well they are maintained.
Yes, but it’s a complex and risky process. Improper installation can lead to dangerous issues, so hiring a professional is recommended.
Yes, chimney liners are essential for safety, preventing harmful gases from entering your home and reducing the risk of chimney fires.
It depends on your policy. Some insurance plans cover chimney repairs, but it’s best to check with your provider for details.