No 9 Silicone Masterflash 254-467mm (10 to 18 inch) - High Temp.
At a Glance
- - High-temperature resistance (-74°C to 260°C)
- - Versatile design for profiled sheeting and flat panels
- - One-piece construction for a seamless watertight seal
- - Quick and simple installation (typically under 5 minutes)
- - Durable silicone material resistant to UV, ozone, and adverse weather

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
The No 9 Silicone Masterflash 254-467mm is a versatile and durable solution designed for both profiled sheeting and flat panel surfaces. Engineered from high-quality silicone, it offers maximum resistance against adverse weather conditions, including ozone and ultraviolet light. This makes it perfect for environments where durability is key.
Capable of withstanding temperatures ranging from -74°C to 260°C, the Silicone Masterflash is ideal for a variety of applications.The one-piece construction ensures a straightforward, efficient installation, typically taking no longer than five minutes. The base is designed to form an effective seal around most panel configurations and roof pitches, irrespective of the pipe location. Installation is straightforward: simply select the appropriate pipe opening and trim, slide the flashing over the pipe, form it to match the roof profile, apply sealant, and secure with screws and caps—tools provided in the Fixing Kit.
Note that three Standard Fixing Kits are required for complete installation.
SKU: 32-902
Technical Specifications | |
---|---|
SKU | 32-902 |
Base Size | 635 x 635mm |
Pipe External | 251-521mm |
Roof Pitch | 0-45u00b0 |
Temperature Range | -74u00b0C to 260u00b0C |
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
The No 9 Silicone Masterflash 254-467mm is a reliable, high-temperature flashing solution that excels in harsh conditions. National Flues delivers nationwide, catering to both retail and trade customers. With our secure online payments and unbeatable prices, this product is a top choice for any installation.
The No 9 Silicone Masterflash is designed to provide a durable, weather-resistant seal around pipes on both profiled and flat panel surfaces, particularly for high-temperature applications.
National Flues is a leading supplier of fireplaces and flues across the UK. Known for our competitive prices and reliable delivery, we serve both retail and trade customers with secure online payment options.
