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Mi-FLEX Insulation for Efficient Fireplace and Flue Insulation in the UK

Mi-FLEX Insulation is a top choice for insulating fireplaces and flues in the UK. With products like Rockwool Tubes, Chimwrap, Granular, and Fire Boards, Mi-FLEX offers superior heat retention, protection, and energy efficiency. Whether you need to line a chimney, insulate a fireplace, or enhance fireproofing, Mi-FLEX has you covered with high-quality insulation solutions.

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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.

£29.99

90-RPS-125

Rockwool Tube - 1000mm long  125mm

Rockwool Tube - 1000mm long 125mm

£36.99

90-RPS-150

Rockwool Tube - 1000mm long  150mm

Rockwool Tube - 1000mm long 150mm

£54.49

90-RPS-200

Rockwool Tube - 1000mm long  200mm

Rockwool Tube - 1000mm long 200mm

£26.49

90-RPS-T

Aluminium Tape

Aluminium Tape

£68.49

90-CW125150

CHIMWRAP Liner Wrap 1000mm - Ø 125/150

CHIMWRAP Liner Wrap 1000mm - Ø 125/150

OUT OF STOCK

£81.49

90-CW175200

CHIMWRAP Liner Wrap 1000mm - Ø 175/200

CHIMWRAP Liner Wrap 1000mm - Ø 175/200

£42.49

25-150-VBF

Insulation Back Filler - Ø 150

Insulation Back Filler - Ø 150

OUT OF STOCK

£26.99

90-LECA

Leca 50L Bag

Leca 50L Bag

£33.99

90-VERM

Vermiculite (100L Bag)

Vermiculite (100L Bag)

£26.49

90-RPS-T

Aluminium Tape

Aluminium Tape

£161.99

96-GLSROCK-15

Glass Rock Board - 2400x1200x15mm

Glass Rock Board - 2400x1200x15mm

£250.49

96-SUPALUX

Supalux Board (SXB0984) - 1220x2440x9mm

Supalux Board (SXB0984) - 1220x2440x9mm

OUT OF STOCK

Your Mi-FLEX Insulation Questions Answered

What is Mi-FLEX Insulation made of? -

Mi-FLEX Insulation is typically made of high-quality materials like Rockwool, ensuring excellent thermal insulation properties and fire resistance.

How can Mi-FLEX Insulation benefit my fireplace? +

Are Mi-FLEX products easy to install? +

Can Mi-FLEX Insulation be used for commercial applications? +

Do Mi-FLEX products meet UK safety standards? +

How long does Mi-FLEX Insulation last? +

Can Mi-FLEX products be combined with other insulation materials? +

Are Mi-FLEX products environmentally friendly? +

Mi-FLEX Insulation provides a range of products tailored to enhance the performance of your fireplace and flue systems. The Rockwool Tubes come in various sizes, offering excellent thermal insulation properties. Chimwrap Liner Wrap ensures secure insulation for your chimney, while the Mi-Flexwrap Kits provide all-in-one insulation solutions. Fire Boards offer added protection and durability, making Mi-FLEX a reliable choice for both residential and commercial applications. Trust Mi-FLEX to deliver efficient and safe insulation for your fireplace and flue needs in the UK.
Why Buy Mi-FLEX Insulation Products
Mi-FLEX Insulation is ideal for a variety of applications in the fireplace and flue industry. Use Rockwool Tubes to insulate chimneys, fireplaces, and flue systems for improved heat retention and energy efficiency. Chimwrap Liner Wrap provides a secure barrier to protect your chimney liners, ensuring optimal performance. Mi-Flexwrap Kits offer easy-to-install insulation solutions that enhance fireproofing and safety. Whether you're a homeowner or a professional, Mi-FLEX products are designed to meet your insulation needs with quality and reliability.

Trusted By Trade Professionals

Our Mi-FLEX 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 Mi-FLEX 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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