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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. Perfect for professionals and DIY enthusiasts alike, this product delivers genuine quality, reliability, and outstanding performance in extreme conditions. Enhance your metal roofing installations with our top-rated, durable, and versatile flashing solution available across the UK.
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In Stock
£26.99
Give us a call if you find it cheaper and we'll try to price match.
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
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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.
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
Technical Specifications
SKU
32-402
Item
No 4 Silicone Masterflash 76-152mm (3 to 6 inch) - High Temp.
Base Size Diameter
254 x 254mm
Pipe External Diameter
76-178mm
Roof Pitch
0-18u00b0
Temperature Range
225u00b0C Continuous - 260u00b0C Intermittent (withstand down to -74u00b0C)
• 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.
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 4 Silicone Masterflash 76-152mm (3 to 6 inch) - High Temp. buyers guide
Comprehensive Buyers Guide for the No 4 Silicone Masterflash
When it comes to protecting your building from the elements, ensuring a secure and long-lasting seal is paramount. The No 4 Silicone Masterflash offers advanced high-temperature resistance and an innovative design that accommodates external pipe diameters from 76mm to 152mm. Read on to learn more about its outstanding features, benefits, and how it addresses all your installation concerns.
Why Choose the No 4 Silicone Masterflash?
Durability: This flashing is constructed from specially compounded silicone that not only withstands extreme temperatures—ranging from a chilling -74°C to a scorching 260°C—but also resists weathering caused by prolonged exposure to ozone and ultraviolet light. This means reduced maintenance and fewer replacements over time.
Versatility: The design adapts effortlessly to both profiled sheeting and flat panel surface applications. Whether you are working on a commercial project or a residential one, the No 4 Silicone Masterflash provides a reliable seal. Its capability to conform to various roof pitches and pipe locations underscores its universal application across diverse installation conditions.
Rapid Installation: Professionals appreciate the convenience of a one-piece construction that ensures a secure fit in under five minutes. This quick installation not only saves time, but also reduces labour costs, making it an attractive option for trade customers and DIY enthusiasts.
Key Features and Their Benefits
- High Temperature Endurance: Provides peace of mind knowing that your sealing solution can cope with severe weather conditions without deteriorating.
- Weather Resistance: The silicone material is engineered to resist degradation from UV exposure and ozone, keeping your installation robust in the long term.
- Ease of Use: With simple, clear installation guidelines, even those with limited experience can confidently complete their installation, minimising errors and ensuring effective application of the product.
- Cost Efficiency: Fast installation and reduced maintenance needs translate into cost savings over the life of your roof.
Addressing Common Concerns
Installation Concerns:
For many, the idea of installing new flashing might seem daunting. However, our comprehensive installation guide ensures that you have all the necessary steps at your fingertips. From the initial trimming of the opening to the final securement with screws and caps, every step is straightforward and backed by detailed instructions. If additional accessories or tools are needed, such as optional lubricants to improve the fit, these can be easily sourced to complement your installation process.
Durability and Longevity:
A frequent question is whether the flashing will maintain its sealing properties over time. The No 4 Silicone Masterflash has been engineered with high-grade silicone, ensuring that it remains flexible and effective even under prolonged exposure to extreme temperatures and harsh environmental conditions. This durability ensures that you won’t have to worry about recurring issues with leaks or water ingress.
Weather Resistance:
Concerns about the product's ability to withstand heavy rain, intense sun, or freezing conditions are common. Thanks to its premium formulation, the silicone material is not only impervious to UV radiation but also resistant to the deteriorative effects of ozone. In essence, this product is designed to last, providing you with a consistently reliable seal regardless of seasonal changes or weather extremes.
Installation Best Practices
Before beginning your installation, make sure all the components are available. The flashing comes with everything you need, including the essential screws, caps, and sealant in the Standard Fixing Kit. It is advisable to review the manufacturer’s guidelines and test-fit the flashing on your roof panel to ensure proper alignment. By following these best practices, you ensure the integrity of the installation and the longevity of the seal.
Optional Accessories
For those looking to optimise their installation process, consider exploring a selection of optional accessories. Lubricants, specialised sealants, and additional fixing components may enhance the ease and reliability of your installation, especially under challenging conditions. These accessories are easily available and can further streamline your project, ensuring that every aspect of your installation is handled with precision.
Final Thoughts
The No 4 Silicone Masterflash is not just a product; it’s a comprehensive solution for all your sealing needs. With its high temperature tolerance, durable construction, and versatile applicability, it stands out as an essential component in any roofing or panel installation project. The ease of installation coupled with the robust performance makes it a cost-effective and reliable option, whether you are a professional contractor or a dedicated DIY enthusiast.
By choosing the No 4 Silicone Masterflash, you are investing in quality, durability, and peace of mind. Each feature is designed with both functionality and ease of use in mind, ensuring that the installation process is smooth and the end result is a watertight, secure seal that lasts for years. This product is a testament to the high standards of National Flues and our commitment to offering solutions that meet the highest industry benchmarks.
Enhance your project by taking advantage of our extensive range of complementary accessories. These optional extras not only make your installation faster and easier but also ensure that every element is perfectly fitted to deliver the best possible performance.
Make a smart investment in your building’s longevity and reliability. With the No 4 Silicone Masterflash, you are choosing a product that delivers unmatched value and performance, ensuring that your roofing structures remain secure and protected against the challenges of weather and time.
Buy now or call 01670 206 999.
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