Product Description

MI-FLUES MI-Flash No. 8 EPDM Roof Flashing 178mm to 330mm Black

Part Number: 12-8LT

Create a secure seal around a large roof penetration with the MI-FLUES MI-Flash No. 8 EPDM Roof Flashing. It fits pipes with an external diameter from 178mm to 330mm. Therefore, it suits many larger flue, chimney and ventilation pipe installations.

The flexible black EPDM material provides strong resistance to outdoor weather, ozone and ultraviolet light. In addition, you can shape the large base to follow the profile of a suitable roof.

This No. 8 flashing has a 435mm x 435mm base and suits roof pitches from 0° to 18°. It also has a maximum service temperature of 100°C. As a result, you must check the expected external pipe temperature before installation.

MI-Flash No. 8 EPDM Flashing Features

• Fits pipes from 178mm to 330mm external diameter
• Equivalent pipe range: 7 to 13 inches
• Large 435mm x 435mm base
• Suitable for roof pitches from 0° to 18°
• Maximum service temperature: 100°C
• Made from flexible black EPDM
• Resistant to weathering, ozone and ultraviolet light
• Can follow the shape of a suitable roof profile
• Suitable for compatible flue, chimney and ventilation pipes
• Part number: 12-8LT

MI-Flash No. 8 Specification

• Brand: MI-FLUES
• Product range: MI-Flash
• Product type: EPDM roof flashing
• Flashing size: No. 8
• Colour: black
• Material: EPDM
• Pipe diameter range: 178mm to 330mm
• Imperial pipe range: 7 to 13 inches
• Base dimensions: 435mm x 435mm
• Maximum temperature: 100°C
• Suitable roof pitch: 0° to 18°
• Part number: 12-8LT

What Is Included?

• 1 x MI-FLUES MI-Flash No. 8 black EPDM roof flashing

Please note: Sealant, screws and fixing caps are not included. Due to the size of its base, this flashing requires two Master Flash Standard Fixing Kits. You can order these separately using the link below.

Buy the Master Flash Standard Fixing Kit

Suitable Applications

The MI-Flash No. 8 helps form a weather-resistant seal where a compatible pipe passes through a suitable roof. For example, you can use it as part of a correctly designed flue, chimney, ventilation or service-pipe installation.

However, the flashing does not replace any firestop, support or clearance required by the pipe or chimney manufacturer. Always follow the instructions supplied with the complete system.

Check the Pipe Diameter Before Ordering

Measure the external diameter of the pipe before choosing the flashing. Do not use the internal flue diameter because insulated pipes can have a much larger outside measurement.

This No. 8 flashing fits external pipe diameters from 178mm to 330mm. The trimmed opening should form a close seal around the pipe without excessive stretching.

How to Install the MI-Flash No. 8

1. First, check that the external pipe diameter measures between 178mm and 330mm.
2. Select the marked opening that best matches the pipe size.
3. Carefully trim the EPDM cone with a suitable knife or scissors.
4. Slide the flashing over the pipe. If required, use a suitable lubricant to help it move into position.
5. Press and shape the base so it follows the roof profile.
6. Apply the correct sealant beneath the full edge of the base.
7. Secure the base with suitable screws and weatherproof fixing caps.
8. Finally, inspect the complete edge and check that the base forms a secure seal against the roof.

Take care when using cutting tools and working at height. A suitably competent installer should complete the work when the flashing forms part of a chimney or flue installation.

Important Installation Checks

• Confirm that the external pipe diameter falls between 178mm and 330mm
• Check that the roof pitch falls between 0° and 18°
• Make sure the temperature at the flashing will not exceed 100°C
• Confirm that EPDM suits the roof covering and pipe installation
• Maintain all required distances from combustible materials
• Follow the pipe, chimney and appliance manufacturer’s instructions
• Order two fixing kits if you do not already have the required sealant and fixings

Why Buy from SNH Tradecentre?

SNH Tradecentre supplies chimney, flue and roof-flashing products to installers, trade customers and homeowners across the UK. Our experienced team can help you check the external pipe diameter, flashing size and fixing-kit requirements before you order.

We also work closely with MI-FLUES to process orders quickly. Where stock and order checks allow, we aim to send orders on the same working day when we receive them before the applicable cut-off time.

If you need help choosing the correct MI-Flash size, call us on 01843 842727 or visit our trade counter in Birchington, Kent.