× National Flues
We Won't Be Beaten On Price.
Free Delivery on Orders Over £100
100% 5 Star Reviews on Trustpilot
Free Flue Design Service Available
Need Help? 01670 206999 (8am-5pm)

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. Ideal for contractors and DIY enthusiasts alike, this robust flashing is an essential roofing accessory that complements your installation needs.
Hover to Zoom / Click for Gallery
£59.49
Give us a call if you find it cheaper and we'll try to price match.

 

Payment Options

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: [email protected]

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

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 Pitch0-18u00b0
Operating Temperature Range-74u00b0C to 260u00b0C
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.
Delivery Information +

We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Wednesday, April 30th. 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 on a retail basis. Give us a call if you find it cheaper and want to buy from us.

Read our review in our No 7 Silicone Masterflash 152-280mm (6 to 11 inch) - High Temp. buyers guide

Compatible and other products that may be of interest...

Secure the No 7 Silicone Masterflash today for a weatherproof, high-performance seal.

Your recently viewed products:

Multiple Payment Options- including Klarna, Clearpay, Mastercard, Visa and Paypal