Lead Free Flashing 20° to 45°, S/S Cone, Black Base - Ø 175 OD (125mm ID)
At a Glance
- Environmentally safe, polymer-based material
- Fast Flash self-adhesive base for easy installation
- Stainless steel (304 S/S) cone ensures long-lasting durability
- Suitable for tiled and slate roofs with slopes from 20° to 45°
- Customisable on-site using a Stanley knife or plate shears
- Reinforced with aluminium mesh for enhanced strength

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
Our Lead Free Flashing from National Flues is the ultimate solution for your chimney roofing needs, suitable for tiled and slate roofs. Constructed from a robust and environmentally safe polymer-based material called Fast Flash, it features an aluminium mesh reinforcement and a stainless steel (S/S) cone for durability. The lower surface is coated with a butyl self-adhesive layer and is finished with a protective film to ensure the flashing remains pristine during storage and installation.
This versatile flashing can be used on roofs with slopes ranging from 20° to 45° and is compatible with external pipe diameters of 175mm (125mm internal diameter). Its flexible design allows it to adhere easily to almost all common building materials, including brick, concrete, metal, glass, and various painted surfaces. The self-adhesive backing simplifies the installation process, and it can be easily customised using a Stanley knife or plate shears.
For porous surfaces such as brick and concrete, pre-treatment with Primer is recommended to ensure a secure bond. All surfaces should be cleaned of grease and oils with appropriate cleaning wipes and lightly matted using an abrasive sponge for optimal adhesion.
SKU: 15-125-081
Technical Specifications | |
---|---|
SKU | 15-125-081 |
Base Size Dia | 820mm x 700mm |
Base Material | Fast Flash Flexible Roof Flashing Black |
Cone Material | 304 S/S |
Cone Diameter Internal | 185mm |
Roof Pitch | 20u00b0-45u00b0 |
Flue Compatibility | u00d8 175 OD (125mm ID) |
Delivery Information +
We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Friday, April 4th. 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 Lead Free Flashing with a Fast Flash adhesive base. This product is not only environmentally friendly but also incredibly easy to install. Perfect for both retail and trade customers, our reliable nationwide delivery ensures you get your product quickly and at unbeatable prices.
This Lead Free Flashing is used to provide a secure, waterproof seal on tiled or slate roofs, particularly where flues pass through the roof.
National Flues is a leading supplier of fireplaces and flues in the UK, committed to providing high-quality products at competitive prices. We offer reliable delivery nationwide and cater to both retail and trade customers.
