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Rain Cap - Ø 125 (20-125-RC)

National Flues proudly presents the Rain Cap - Ø 125, an indispensable accessory for protecting and optimising your chimney system. This high-quality chimney cap is specifically designed for use with MI-FLEX flexible flue liners, making it a top choice for homeowners and professionals alike. Combining durability with superior performance, this stainless steel rain cap not only shields your chimney from rain and vermin but also enhances the overall efficiency of your multi-fuel heating setup. Dis Read more...
The price you pay today £33.99
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At a Glance

    Designed for 125mm diameter chimneys
    Part of the MI-FLEX Accessories MF20 range
    Constructed from 316L stainless steel for enhanced durability
    Provides effective protection against rain, vermin, and birds
    Supports high-temperature appliances up to 600°C (T600 designation)
Delivery Information +

We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Tuesday, June 24th. This is based on current delivery times for this product. Delivery for products not in our warehouses can be delayed because of third party carriers. If you need a stove, or other bulky product, to be delivered by a specific time in the next 7 days then please give us a call. We can sometimes reduce longer lead times if we pay the carrier £25 for express delivery. Visit our Shipping Information page for more information.

Warranty & Returns +

All our products come with warranties and you can read in our blog about they types and terms and conditions for warranties. Mi-Flex flue liner, for example, comes with a lifetime guarantee. Give us a call if you want to know about a specific warranty. Returns for damaged items are covered by insurance; non-damaged returns incur return delivery costs.

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We will match any price, like-for-like, on a retail basis. Give us a call if you find it cheaper and want to buy from us.

We Won't Be Beaten On Price

At National Flues, we continuously monitor competitor prices. This ensures that we consistently offer you the best deals on all our products. Here’s how we keep your costs low:

  • Daily Price Matching: Our team adjusts prices to ensure we stay competitive.
  • Bulk Purchasing Power: We sell a lot, so we can negotiate better rates with suppliers, passing the savings directly to you.
  • Operational Efficiency: We have streamlined processes to reduce overhead.

Price Match Guarantee: If you find the same product cheaper within 48 hours, we’ll match it and refund the difference.

Free Delivery Over £100: Orders over £100 are free delivery (call us if delivery is required outside the mainland UK).

“I saved 20% on my purchase compared to other retailers. Exceptional service!” – Jane D.

Have Questions?
Phone: 01670 206999
Email: [email protected]

The Rain Cap - Ø 125 from National Flues is meticulously designed to offer unparalleled rain protection at the top of your chimney stack. This robust accessory is part of the MF20 MI-FLEX range, perfectly compatible with MI-FLEX 316 and 904 flexible flue liners. It ensures a complete, efficient chimney system when used in conjunction with other MI-FLEX accessories.Primarily, this rain cap works to prevent water, vermin, and birds from entering your chimney, protecting the interior system and promoting efficiency.

According to Building Regulations Document J, a flexible flue liner must be fully enclosed within a masonry chimney, making this rain cap essential for maintaining system integrity.Suitable for a variety of fuel types including wood (with less than 20% moisture), smokeless coal, gas, and oil, this rain cap is designed for use with appliances operating up to 600°C (T600 designation). Ensure your chimney structure is sound, and chimney pots are in good condition for optimal results.For effective installation, the rain cap should be used with a top plate and clamp—no insert is required. Additionally, it supports the vertical weight of the flue liner and ensures that any excess water does not seep back into the appliance, thereby protecting it from potential damage.Maintenance of the chimney system should be straightforward, allowing easy access for sweeping by a competent person.

For solid fuel applications, chimneys should be inspected and swept at least twice a year, preferably by a HETAS registered sweep. Regular upkeep prevents blockages and deposits, ensuring longevity and efficiency of the chimney.

SKU: 20-125-RC

Technical Specifications
SKU20-125-RC
ItemRain Cap - u00d8 125
DesignationBSEN 1856-2 T600 N1 W V2 L50012 G
SystemMI-FLEX Accessories MF20
Material316L Stainless Steel
Colour FinishNatural / Stainless Steel
FuelsWood (<20% moisture), Smokeless Coal, Gas, Oil
ApprovalsHETAS / CE
Temperature RatingUp to 600u00b0C (T600)
Ensure your chimney structure is sound and the chimney pot is in good condition prior to installation. The Rain Cap - Ø 125 should be fitted using a top plate and clamp, without the need for an insert. Carefully secure the cap at the apex of the chimney stack to support the vertical weight of the flue liner. It is advisable to have the installation undertaken by a competent person, especially for solid fuel configurations. Always check that all components, including the MI-FLEX flexible flue liners, are correctly aligned to guarantee optimal performance and compliance with Building Regulations Document J. Regular inspections and professional chimney sweeping are recommended to maintain system integrity.

The Rain Cap - Ø 125 is designed to fit chimneys with a diameter of 125mm.

Yes, it is suitable for wood (with less than 20% moisture), smokeless coal, gas, and oil.

Yes, it provides essential protection against rain, vermin, and birds, and ensures the efficiency and longevity of the chimney system.

The rain cap should be used in conjunction with a top plate and clamp. Ensure the chimney and pots are in good condition for optimal installation.

For solid fuel applications, the chimney should be swept at least twice a year, by a competent person, preferably a HETAS registered sweep.

Yes, it is suitable for appliances operating up to 600°C (T600 designation).

A list of HETAS registered sweeps can be found at www.hetas.co.uk.

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