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No 4 Silicone Masterflash 76-152mm (3 to 6 inch) - High Temp. (32-402)

Discover the excellence of National Flues with our No 4 Silicone Masterflash, a high temperature-rated flashing solution ideal for metal roofs and flat panels. This premium silicone flashing is designed for superior weather resistance and adaptability, ensuring that your roofing projects meet the highest standards. Read more...
Now only £27.99
Give us a call if you find it cheaper and we'll normally price match.
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At a Glance

  • High temperature tolerance: from -74°C up to 260°C
  • Durable, weather-resistant silicone material
  • Versatile use on profiled sheeting and flat panel surfaces
  • Rapid, one-piece installation in under five minutes
  • Engineered for a watertight seal on varied roof pitches

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

The No 4 Silicone Masterflash 76-152mm (3 to 6 inch) is a versatile and high-performance flashing solution suitable for profiled sheeting and flat panel surfaces. With a remarkable temperature resistance ranging from -74°C to an impressive 260°C, it is designed to endure extreme conditions. Constructed from durable silicone, it offers maximum resistance against weathering caused by ozone and ultraviolet light.

The one-piece construction ensures a quick and hassle-free on-site installation, typically completed in under five minutes. The flashing’s base is ingeniously crafted to form a watertight seal on various panel configurations and roof pitches, irrespective of the pipe location. To install, simply trim the opening, slide the flashing over the pipe (with optional lubrication), form it to match the roof profile, apply the sealant provided in the Fixing Kit, and secure it with the supplied screws and caps.

For best results, use one Standard Fixing Kit per installation.

SKU: 32-402

Delivery Information* +

We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Friday, November 14th. This is based on current lead times. Bear in mind that it is a busy time of year. If you need a product delivered by a specific time in the next 7 days, then please give us a call on 01670 206 999. Visit our Shipping Information page for more information.

About National Flues Ltd +

We began over 30 years ago as a fireplace shop in the North East. We now supply hundreds of trade professionals and thousands of retail customers, all across the UK, every month. We are still a family owned business, lead by the MD Neil, and always try our best to deliver the best possible experience. We also price match, so give us a call if you find this cheaper and want to buy from us. Visit our about us page to read a bit more.

Technical Specifications
SKU32-402
ItemNo 4 Silicone Masterflash 76-152mm (3 to 6 inch) - High Temp.
Base Size Diameter254 x 254mm
Pipe External Diameter76-178mm
Roof Pitch0-18°
Temperature Range225°C Continuous - 260°C Intermittent (withstand down to -74°C)
• Begin by carefully trimming the opening to the correct size using a Stanley knife or sharp scissors. • Slide the flashing over the pipe; for an even smoother fit, using optional lubrication can help mould the silicone around the profile. • Form the flashing to match the specific roof profile, ensuring a snug and adaptable seal. • Apply the provided sealant from the Standard Fixing Kit along the base, then secure the flashing using the supplied screws and caps. • Always check that all components are firmly in place and the seal is watertight before completing the installation. Follow manufacturer guidelines to maintain warranty conditions.

The No 4 Silicone Masterflash is suitable for both profiled sheeting and flat panel surfaces, offering versatile application options.

This flashing can withstand temperatures from as low as -74°C to as high as 260°C, making it ideal for extreme conditions.

The one-piece construction allows for a quick and easy installation, usually completed within five minutes.

You will need a Stanley knife or scissors to trim the opening, and the installation kit includes all necessary sealant, screws, and caps.

Yes, the base is designed to form a seal on most panel configurations and roof pitches, regardless of the pipe location.

Yes, the silicone used in this flashing is specifically compounded for maximum resistance to weathering due to ozone and ultraviolet light.

The Standard Fixing Kit includes sealant, screws, and caps necessary for the installation.

 

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