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Top Insert Sleeve - Ø 125

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The Top Insert Sleeve - Ø 125 is designed to be used in combination with the Top Plate and Top Clamp, providing reliable support for the weight of the flue liner at the top of your chimney stack. This essential component ensures that the liner remains undamaged, maintaining the integrity of your chimney system.

£11.99 incl VAT

  •   Description  
  •   Product Details  

The Top Insert Sleeve - Ø 125 is an essential component for anyone installing or maintaining a chimney system using MI-FLEX 316 and 904 flexible flue liners. This expertly designed accessory slides seamlessly into the flexible chimney liner at the top of your installation. Used in conjunction with a Top Plate and Top Clamp, it ensures that the flue liner's weight is securely supported without compromising its integrity. This robust sleeve is suitable for a range of fuel types including wood with less than 20% moisture, smokeless coal, gas, and oil, and can withstand temperatures up to 600°C (T600). According to Building Regulations Document J, a flexible flue liner must be entirely enclosed within a masonry chimney, making the Top Insert Sleeve an indispensable part of your setup. Proper maintenance is crucial; sweeping and inspection should be conducted at least annually by a qualified professional to ensure longevity and performance.

  • SKU: 20-125-PS
  • Item: Top Insert Sleeve - u00d8 125
  • Designation:: BSEN 1856-2 T600 N1 W V2 L50012 G
  • System:: MI-FLEX Accessories MF20
  • Material:: 316L
  • Colour Finish:: Natural / Stainless Steel
  • Fuels:: Wood, Oil, Gas, Smokeless coal
  • Approvals:: HETAS / CE

What is it for?

The Top Insert Sleeve - Ø 125 is designed to support the weight of a flexible chimney liner at the top of a masonry chimney stack, ensuring stability and integrity.

Brand Summary

National Flues is a premier supplier of fireplaces and flues, offering reliable and competitively priced products to retail and trade customers across the UK. Our commitment to quality and dependable delivery makes us a preferred choice in the industry.

National Flues Verdict

The Top Insert Sleeve - Ø 125 is a must-have for anyone looking to ensure the integrity and support of their chimney system. Here at National Flues, we pride ourselves on providing top-quality products at unbeatable prices. Whether you're a retail or trade customer, you can count on our reliable nationwide delivery.

Our Rating
9.7/10

FAQs

The Top Insert Sleeve - Ø 125 is used to support the weight of a flexible flue liner at the top of a chimney stack, ensuring the integrity of the installation.

Yes, this insert sleeve is suitable for wood with less than 20% moisture, smokeless coal, gas, and oil.

The Top Insert Sleeve can withstand temperatures up to 600°C, meeting the T600 designation.

Yes, Building Regulations Document J requires that the flue liner be completely enclosed inside a masonry chimney. A non-masonry enclosure like timber or plasterboard is not acceptable.

The chimney system should be inspected and swept at least once a year. For chimneys serving solid fuel appliances, it's recommended to sweep twice a year – at the end of the heating season and at the start of the next one.

No, chemical cleaners and mild steel tools should never be used to sweep stainless steel chimneys. Always consult a professional chimney sweep.

The Top Insert Sleeve should be used alongside a Top Plate and Top Clamp to ensure the flue liner is securely supported.