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No 7 Silicone Masterflash 152-280mm (6 to 11 inch) - High Temp. (32-702)

National Flues proudly presents the No 7 Silicone Masterflash – a high temperature flashing solution engineered for both profiled sheeting and flat panel roofs. Made from premium, UV-resistant silicone, this product delivers a secure, weatherproof seal for external pipes ranging from 152 to 280mm. Read more...
Now only £61.99
Give us a call if you find it cheaper and we'll normally price match.
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At a Glance

  • Rapid, one-piece installation (approximately 5 minutes)
  • Withstands extreme temperatures (-74°C to 260°C)
  • Available for pipe diameters 152-280mm (6 to 11 inches)
  • UV and ozone resistant high-grade silicone construction
  • Versatile design for flat panel and profiled roofing

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 7 Silicone Masterflash, with a pipe diameter capacity of 152-280mm (6 to 11 inches), is a high-temperature flashing ideal for both profiled sheeting and flat panel surfaces. Engineered from high-grade silicone, it ensures maximum resistance to weathering from ozone and ultraviolet light. Its robust one-piece construction facilitates quick and effortless on-site installation, typically taking no more than five minutes.

Designed to form a reliable seal on a variety of roof configurations and pitches, its versatile base accommodates different pipe locations with ease. It boasts temperature resistance ranging from an impressive -74°C to 260°C, suitable for demanding environments. Follow these straightforward installation steps: select and trim the pipe opening with a Stanley knife or scissors, slide the flashing over the pipe (lubricate with grease if necessary), mould the flashing to the roof profile, apply sealant from the Fixing Kit, and fasten using the supplied screws and caps.

Note that TWO Standard Fixing Kits are required to complete the installation.

SKU: 32-702

Delivery Information* +

We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Monday, November 17th. 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
SKU32-702
Product NameNo 7 Silicone Masterflash 152-280mm (6 to 11 inch) - High Temp.
Pipe Diameter Capacity152-280mm (6 to 11 inch)
Base Size355 x 355mm
Pipe External134-292mm
Roof Pitch0-18°
Operating Temperature Range-74°C to 260°C
Installation TimeApproximately 5 minutes
Fixing Kits Required2 Standard Fixing Kits
Installation Steps: - Trim the pipe opening using a Stanley knife or scissors. - Slide the silicone flashing over the pipe; apply grease if necessary for a smoother fit. - Mould the flashing to closely follow the roof's profile for an optimal seal. - Apply sealant from the provided Fixing Kit and secure with the supplied screws and caps. Warning: Always ensure that both standard fixing kits are used to warrant full installation integrity.

The No 7 Silicone Masterflash is suitable for use with both profiled sheeting and flat panel surfaces.

The No 7 Silicone Masterflash can withstand temperatures from -74°C to 260°C.

Yes, the high-grade silicone construction of the No 7 Silicone Masterflash provides excellent resistance to weathering from ozone and ultraviolet light.

The one-piece construction of the No 7 Silicone Masterflash allows for a quick and easy installation, typically taking no more than five minutes.

You'll need a Stanley knife or scissors for trimming. The sealant and fastening tools are included in the Fixing Kit.

Two Standard Fixing Kits are required to install the No 7 Silicone Masterflash.

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

 

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