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No 5 Silicone Masterflash 102-178mm (4 to 7 inch) - High Temp. (32-502)

National Flues presents the No 5 Silicone Masterflash 102-178mm (4 to 7 inch) - High Temp, a superior high temperature silicone flashing perfect for sealing gaps on metal roofs and profiled sheeting. Engineered for versatility and resilience, this premium product offers an ideal solution for both residential and commercial roofing applications, ensuring reliable protection and an impeccable finish.
The price you pay today £38.99
Give us a call if you find it cheaper and we'll normally price match.

 

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At a Glance

    High temperature resistance (-74°C to 260°C)
    Durable silicone construction designed for extreme weather
    Quick one-piece installation (typically under 5 minutes)
    Versatile design for both profiled sheeting and flat panel roofs
    Complete Fixing Kit included with sealant, screws and caps
Delivery Information +

We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Tuesday, July 1st. This is based on current delivery times for this product. Delivery for products not in our warehouses can be delayed because of third party carriers. If you need a stove, or other bulky product, to be delivered by a specific time in the next 7 days then please give us a call. We can sometimes reduce longer lead times if we pay the carrier £25 for express delivery. Visit our Shipping Information page for more information.

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All our products come with warranties and you can read in our blog about they types and terms and conditions for warranties. Mi-Flex flue liner, for example, comes with a lifetime guarantee. Give us a call if you want to know about a specific warranty. Returns for damaged items are covered by insurance; non-damaged returns incur return delivery costs.

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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.

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Price Match Guarantee: If you find the same product cheaper within 48 hours, we’ll match it and refund the difference.

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Have Questions?
Phone: 01670 206999
Email: [email protected]

The No 5 Silicone Masterflash 102-178mm (4 to 7 inch) - High Temp is engineered for excellence. Made from durable silicone, this flashing is specifically compounded to withstand extreme temperatures ranging from -74°C to 260°C. It's an ideal solution for securing a seal on both profiled sheeting and flat panel surfaces, regardless of pipe location.

The one-piece construction allows for rapid and straightforward installation, generally taking no longer than five minutes on-site. Additionally, its base is expertly designed to fit various panel configurations and roof pitches. To install, simply choose your pipe opening, trim the flashing, slide it over the pipe, mould it to the roof profile, apply sealant from the included Fixing Kit, and fasten using the screws and caps provided.

This robust and versatile product ensures a reliable seal, making it a must-have for professionals and DIY enthusiasts alike.

SKU: 32-502

Technical Specifications
SKU32-502
ItemNo 5 Silicone Masterflash 102-178mm (4 to 7 inch) - High Temp
Base Size280 x 280mm
Pipe External Diameter101-210mm
Roof Pitch0-18u00b0
Temperature Range225u00b0C Continuous - 260u00b0C Intermittent
MaterialHigh Temp Silicone
For a swift and secure installation, begin by selecting the appropriate pipe opening size. Use a Stanley knife or scissors to trim the No 5 Silicone Masterflash to the desired length. Slide the flashing over the pipe and carefully mould it to match the roof’s profile. Next, apply the sealant provided in the Fixing Kit along the base, ensuring a watertight bond. Fasten the flashing in place using the supplied screws and caps. It is recommended to check the alignment and seal thoroughly after fixing to avoid any potential leaks. Caution: Always verify that the surface is clean and dry before application to ensure optimal adhesion.

The No 5 Silicone Masterflash is designed to resist temperatures from -74°C to 260°C.

Yes, this flashing is compatible with both profiled sheeting and flat panel surfaces.

Generally, it takes no longer than five minutes to install on-site.

You will need a Stanley knife or scissors to trim the flashing. The Fixing Kit (included) provides sealant, screws, and caps.

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

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

Absolutely, the flashings are compounded specifically for maximum resistance to weathering due to ozone and ultraviolet light.

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