No 9 EPDM Masterflash 254-467mm (10 to 18 inch) - Low Temp.
At a Glance
- - Made from high-grade EPDM for superior resistance against ozone, UV and weathering
- - Quick one-piece installation in under five minutes
- - Accommodates a wide range of external pipe diameters (254-467mm / 10 to 18 inch)
- - Versatile application on profiled sheeting and flat panels
- - Operates efficiently in temperatures from -55°C to 135°C

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: sales@nationalflues.com
- Info
- Specs
- Install
- FAQs
The No. 9 EPDM Masterflash 254-467mm (10 to 18 inch) is a superior flashing solution suitable for profiled sheeting and flat panel surfaces, effortlessly handling external pipe diameters from 254mm to 467mm. This product boasts a high-temperature resistance ranging from -55°C to 135°C, offering excellent durability. Constructed from EPDM, it is specifically designed for maximum resistance against weathering caused by ozone and ultraviolet light.
Its one-piece construction allows for quick and easy on-site installation, generally taking no longer than five minutes. Its versatile base is engineered to create a tight seal on a variety of panel configurations and roof pitches, irrespective of pipe location. Installation is straightforward, involving trimming the pipe opening, lubricating and sliding the flashing over the pipe, forming it to the roof’s profile, applying the provided sealant, and fastening with the screws and caps available in the standard Fixing Kit.
Note that three Standard Fixing Kits are required to properly install this flashing.
SKU: 32-901
Delivery Information +
We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Monday, April 7th. 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
The No. 9 EPDM Masterflash is a top-notch product, perfect for both retail and trade customers. With our reliable delivery service nationwide, National Flues ensures you’ll get your flashing promptly, every time.
This product is used for sealing around pipes on profiled sheeting and flat panel surfaces, ensuring a weather-tight seal in diverse temperature conditions.
National Flues is a trusted supplier of fireplaces and flues across the UK, committed to providing reliable delivery and competitive prices to both retail and trade customers.
