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High-Quality Insulation for Your Fireplace and Flues in the UK

When it comes to maintaining your fireplace and flues in the UK, insulation plays a crucial role. Insulation helps improve efficiency, reduce heat loss, and enhance safety. Our MI-Flex, 904L Mi-FLEX, 200MM (8 INCH) insulation products are designed to meet the highest standards, providing exceptional thermal protection for your system.

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StovesPremium Stoves
FireplacesStunning Fireplaces
MI-FlexFlexible Liner
Chimney FlueChimney Flue
Connecting PipesConnecting Pipes
Fans Flashings CowlsFans Flashings Cowls
Installation PartsInstallation Parts
After Care PartsAfter Care Parts

The best selling flue liner in the UK. Suitable for gas, oil, and approved solid fuels. Call our advisers on 01670 206 999 if you need any help choosing.

£81.49

90-CW175200

CHIMWRAP Liner Wrap 1000mm - Ø 175/200

CHIMWRAP Liner Wrap 1000mm - Ø 175/200

£26.99

90-LECA

Leca 50L Bag

Leca 50L Bag

£54.49

90-RPS-200

Rockwool Tube - 1000mm long  200mm

Rockwool Tube - 1000mm long 200mm

£26.49

90-RPS-T

Aluminium Tape

Aluminium Tape

£33.99

90-VERM

Vermiculite (100L Bag)

Vermiculite (100L Bag)

Your Insulation Questions Answered

Why is insulation important for fireplace and flues? -

Insulation helps to reduce heat loss, improve energy efficiency, and enhance the overall performance of your fireplace and flues.

What are the benefits of using MI-Flex insulation products? +

Can insulation help prevent chimney fires? +

Is insulation suitable for all types of flues and chimneys? +

How often should insulation be replaced? +

Do I need professional help to install insulation in my fireplace and flues? +

Are MI-Flex insulation products environmentally friendly? +

Can insulation help reduce heating costs in my home? +

How can I determine the right amount of insulation needed for my fireplace and flues? +

Choosing the right insulation for your fireplace and flues is essential for maximizing performance. Our MI-Flex insulation range offers superior heat resistance and durability, ensuring long-lasting protection for your system. Whether you are installing a new fireplace or upgrading your existing flues, our insulation products are easy to work with and deliver outstanding results.
Why Buy Insulation Products
Insulation is vital for preventing heat loss in your fireplace and flues, helping to maintain a consistent temperature and improve overall energy efficiency. Additionally, proper insulation can enhance the safety of your system by reducing the risk of overheating and potential damage. Our high-quality insulation is suitable for both residential and commercial applications, providing reliable protection for various types of flues and chimney systems.

Trusted By Trade Professionals

Our Insulation products and services are trusted by hundreds of professionals nationwide. We're committed to providing quality and reliability that meets the high standards of our customers.

Dedicated Support

Experience our unparalleled customer service and support when you buy Insulation from National Flues. Our team is here to assist you every step of the way, ensuring your needs are met with expertise and care.

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