Product Description

MI-FLUES MI-Flash No. 4 Metal Black EPDM Flashing 76–152mm

Part Number: 12-4LT

Create a secure seal around a compatible roof pipe with the MI-FLUES MI-Flash No. 4 Metal Black EPDM Flashing. It fits external pipe diameters from 76mm to 152mm, which covers sizes from approximately 3 to 6 inches.

The black EPDM cone resists weather, ozone and ultraviolet light. Meanwhile, the flexible aluminium base follows the profile of a suitable metal roof. As a result, the flashing creates a neat and durable finish around the pipe penetration.

The flashing has a 250mm x 250mm base and suits roof pitches from 0 to 18 degrees. The installer can trim the stepped cone to match the outside diameter of the pipe.

Important: The standard fixing kit does not come with this flashing. You will need one fixing kit to install one flashing.

MI-Flash No. 4 Key Features

• Flexible black EPDM roof flashing
• Fits external pipe diameters from 76mm to 152mm
• Covers pipe sizes from approximately 3 to 6 inches
• 250mm x 250mm flexible base
• Suitable for compatible metal and profiled roofs
• Suitable for roof pitches from 0 to 18 degrees
• Maximum stated operating temperature: 100°C
• Resists weather, ozone and ultraviolet light
• Stepped cone allows accurate trimming
• Flexible base follows the roof profile
• Suitable for compatible low-temperature pipe penetrations
• Black finish
• Part number: 12-4LT

MI-Flash No. 4 EPDM Flashing Specification

• Brand: MI-FLUES
• Product range: MI-Flash
• Product type: flexible EPDM roof flashing
• MI-Flash size: No. 4
• Part number: 12-4LT
• External pipe diameter: 76mm to 152mm
• Imperial pipe range: approximately 3 to 6 inches
• Base dimensions: 250mm x 250mm
• Cone material: EPDM
• Base material: flexible aluminium
• Colour: black
• Maximum stated temperature: 100°C
• Suitable roof pitch: 0 to 18 degrees
• Fixing kit included: no
• Fixing kits required: 1

What Is Included?

• 1 x MI-FLUES MI-Flash No. 4 Metal Black EPDM roof flashing

Please note: Sealant, screws and protective screw caps do not come with the flashing. Order the standard fixing kit separately.

Standard Fixing Kit

You will need one standard fixing kit for each No. 4 flashing. The kit contains Hi-silicone sealant, fixing screws and protective caps.

View the Master Flash Standard Fixing Kit

What Is an EPDM Roof Flashing?

An EPDM flashing creates a flexible seal where a pipe passes through a roof. The installer trims the stepped rubber cone to suit the outside diameter of the pipe. The cone then stretches around the pipe to create a close fit.

The flexible base forms around the roof profile. Sealant and suitable screws then secure the base and help prevent water from entering around the opening.

EPDM resists sunlight, ozone and outdoor weather. Therefore, it provides a durable option for many compatible low-temperature roof penetrations.

Suitable Applications

The MI-Flash No. 4 can suit compatible pipe penetrations through metal or profiled roofs, including:

• Ventilation pipes
• Soil and waste vent pipes
• Ducting penetrations
• Small flue and chimney pipes within the temperature limit
• Other compatible pipes from 76mm to 152mm

Always check the pipe’s outside diameter and surface temperature before ordering. The pipe temperature must remain within the stated 100°C limit at the flashing.

How to Choose the Correct Opening

The EPDM cone has stepped size markings. These markings help the installer find the correct cutting position.

Choose an opening that remains slightly smaller than the pipe’s outside diameter. The EPDM can then stretch around the pipe and create a close seal.

Measure the outside of the pipe rather than its internal bore. In addition, check that the pipe falls within the 76mm to 152mm size range.

How to Install the MI-Flash No. 4

1. Measure the outside diameter of the pipe.
2. Choose the correct step on the EPDM cone.
3. Cut the opening carefully with a sharp knife or suitable scissors.
4. Slide the flashing over the pipe.
5. Use a suitable EPDM-compatible lubricant if required.
6. Press and shape the flexible base to match the roof profile.
7. Lift the base and apply suitable weatherproof sealant underneath it.
8. Secure the base with suitable roofing screws.
9. Space the fixings evenly around the edge of the base.
10. Fit protective caps over the screw heads.
11. Inspect the pipe seal and complete flashing base.

Do not cut the opening too large. A loose opening may not seal correctly around the pipe. If you feel unsure, start with a smaller opening and enlarge it carefully.

Installation Advice

• Fit the flashing to a clean and dry roof surface
• Use sealant and screws that suit the roof material
• Use only a lubricant that suits EPDM rubber
• Do not use sharp tools near the finished seal
• Keep the EPDM cone free from cuts and damage
• Do not exceed the stated 100°C temperature limit
• Check that the roof pitch does not exceed 18 degrees
• Do not overtighten the fixing screws
• Follow all relevant roofing and pipe-system instructions

Working at roof level carries a serious risk of injury. Use safe access equipment and ask a competent installer to complete the work where needed.

Why Buy from SNH Tradecentre?

SNH Tradecentre supplies MI-FLUES products and roof-flashing accessories to homeowners, installers and trade customers throughout the UK.

• Genuine MI-FLUES product
• Compatible fixing kit available separately
• Helpful product advice before ordering
• Secure online ordering
• Delivery available throughout the UK
• Trade counter in Birchington, Kent
• Established plumbing and heating merchant

If you need help choosing the correct flashing size, call SNH Tradecentre on 01843 842727 before ordering.

Important Information Before Ordering

Measure the outside diameter of the pipe before choosing the flashing. Also, check the expected pipe temperature, roof pitch and roof material.

The standard fixing kit does not come with this product. Order one fixing kit for each No. 4 flashing.