MI-Flash - No 5 Metal Black EPDM 101-178mm 280x280
At a Glance
- Durable Black EPDM construction for long-lasting performance
- Withstands extreme temperatures from -55°C to 135°C
- Quick, one-piece design enabling installation in just 5 minutes
- Versatile fit for flue sizes between 101-178mm and roof pitches from 0° to 18°
- Comes with a complete Fixing Kit including sealant, screws, and caps

Please Note: All dimensions refer to the internal diameter of flues. If unsure, please call 01670 206999 to ensure you choose the correct products.
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]
- Info
- Specs
- Install
- FAQs
Introducing the MI-Flash No 5 Metal Black EPDM, the ultimate solution for sealing your chimney flues. Crafted from high-quality EPDM, this flashing is designed to withstand extreme temperatures from -55°C to 135°C. EPDM is famed for its resistance to weathering, ozone, and UV light, ensuring your installation lasts for years.
The one-piece construction allows for quick and easy on-site installation, typically taking no longer than five minutes. Its versatile base is engineered to form a secure seal on various panel configurations and roof pitches, regardless of where the pipe is located. Installation is straightforward: simply choose the appropriate pipe opening and trim with a stanley knife or scissors, slide the flashing over the pipe, form it to the roof profile, apply sealant, and secure with the screws and caps provided in the Fixing Kit.
One Standard Fixing Kit is needed for installation.
SKU: 12-5LT
Technical Specifications | |
---|---|
Base Dimensions | 280 x 280mm |
Pipe External | 101 - 178mm |
Roof Pitch | 0 - 18u00b0 |
Temperature Rating | 100u00b0C Continuous, 135u00b0C Intermittent |
Material | Black EPDM Rubber |
Installation Includes | Standard Fixing Kit (Sealant, Screws, Caps) |
Delivery Information +
We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Thursday, April 3rd. If you need faster stove or fireplace delivery please give us a call. We can often 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. Mi-Flex offers a lifetime guarantee. Returns for damaged items are covered by insurance; non-damaged returns incur return delivery costs.
Price Match Guarantee +
We will match any price like for like. If you find it cheaper within 48 hours, we'll refund the difference.
Compatible and other products that may be of interest...
National Flues Ltd Verdict
At National Flues, we highly recommend the MI-Flash No 5 Metal Black EPDM for its excellent durability and easy installation. This product is perfect for both retail and trade customers, with reliable delivery across the UK.
The MI-Flash No 5 Metal Black EPDM is used for sealing chimney flues and other pipe penetrations through roofs, ensuring a weather-tight seal.
National Flues is a trusted provider of high-quality chimney flues and fireplaces, catering to both retail and trade customers across the UK. Known for competitive pricing and reliable delivery, we aim to provide top-notch products and services to our valued customers.
