MI-Flash - No 7 Metal Grey SILICONE 152-280mm 355x355
At a Glance
- - Flawless seal on both profiled sheeting and flat panel roofs
- - High-quality metal grey silicone construction
- - Withstands extreme temperatures and harsh weather conditions
- - Quick, one-piece design for installation in under five minutes
- - Flexible base adapts easily to diverse roof pitches and pipe placements
- - Requires two Fixing Kits (screws and caps) ensuring a secure fix

Please Note: All dimensions refer to the internal diameter of flues. If unsure, please call 01670 206999 to ensure you choose the correct products.
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]
- Info
- Specs
- Install
- FAQs
The MI-Flash No 7 Metal Grey Silicone Flashing is designed to provide a flawless seal on roofs with both profiled sheeting and flat panel surfaces. The high-quality silicone construction ensures superior resistance to extreme temperatures (ranging from -74°C to 260°C), ozone, and ultraviolet light, guaranteeing long-lasting performance even in the harshest weather conditions. The one-piece design allows for a quick and hassle-free installation process, typically completed in under five minutes.
The flexible base adapts seamlessly to various panel configurations and roof pitches, irrespective of the pipe's location. To install, simply choose your pipe opening, trim with a Stanley knife or scissors, lubricate if needed, and fasten using the provided screws and caps from the Fixing Kit (two kits required).
SKU: 12-7HT
Technical Specifications | |
---|---|
Base Size | 355 x 355 mm |
Pipe External | 152-280 mm |
Roof Pitch | 0-18u00b0 |
Temperature | 225u00b0C Continuous / 260u00b0C Intermittent |
Material | Metal Grey Silicone |
Installation Accessories | Requires two Standard Fixing Kits (screws and caps) |
Delivery Information +
We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Thursday, April 3rd. 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. If you find it cheaper within 48 hours, we'll refund the difference.
Compatible and other products that may be of interest...
National Flues Ltd Verdict
The MI-Flash No 7 Metal Grey Silicone Flashing is a top choice for both trade and retail customers. Its robust construction and easy installation make it a reliable option for a variety of roofing and chimney applications. Our nationwide delivery ensures you receive your product promptly, and our prices are rarely beaten.
The MI-Flash No 7 Metal Grey Silicone Flashing is used to create a seal on roofs with varying panel configurations and pitches, ensuring protection against weather elements and leaks.
National Flues supplies high-quality fireplaces and flues across the UK, catering to both retail and trade customers. We pride ourselves on excellent service, unbeatable prices, and dependable delivery.
