Aztec MetalFlash No4 70-175mm

The Aztec MetalFlash No4 is a pipe flashing for metal roofs, sealing penetrations from 70 to 175mm. This version has a red silicone sleeve rated to 260C intermittently, which makes it the right pick where the pipe runs hot, such as an exhaust flue or a PPE vent. The square aluminium base moulds to the roof profile, so the flashing forms a watertight seal without mastics or heat.

Key Features

• Fits pipe and conduit penetrations from 70 to 175mm
• High-temperature red silicone sleeve rated to 260C intermittently
• Square aluminium base approximately 280mm wide, moulds to the roof profile
• Suits flat, corrugated and standing-seam metal roofs up to 45 degrees
• Retains elasticity under UV, ozone and extreme temperatures
• 25 year manufacturer guarantee

Specifications

• Product: Aztec MetalFlash No4
• Pipe range: 70-175mm
• Sleeve material: high-temperature red silicone
• Temperature rating: up to 260C intermittently
• Base: square aluminium, approx 280mm wide
• Roof pitch: flat to 45 degrees metal profiles
• Warranty: 25 years

Installation

Slip the flashing over the pipe and press the square aluminium base down over the roof profile. The soft aluminium moulds to the corrugations by hand, and the silicone sleeve seals against the pipe. Trim the sleeve with scissors to fit the exact pipe diameter where needed, then fix the base down with suitable fasteners. No mastic and no heat are required.

Applications

• Exhaust flues and hot-venting pipes through metal roofs
• PPE systems and appliance vents that run hot
• Plumbing and ventilation penetrations on corrugated and standing-seam roofs
• Roofs where a high-temperature pipe flashing is specified

What You Need To Complete The Job

For a standard-temperature pipe use the black EPDM MetalFlash No4, and for a smaller pipe the No3 in red silicone. Browse the Metal Roof Flashing range for the full kit.

Frequently Asked Questions

Why choose the silicone version?

The red silicone sleeve is rated to 260C intermittently, which suits flues and hot vents that would damage a standard EPDM flashing. It keeps its elasticity under UV, ozone and extreme heat.

What pipes does it fit?

It fits pipes and conduits from 70 to 175mm. The sleeve is marked so it can be trimmed to the exact pipe diameter, which gives a snug seal across the range.

Does the aluminium base need mastic?

No. The soft aluminium base moulds to the roof profile and forms the seal against the sheet. Mastic is not required, though some installers add a bead around the base edge for extra insurance on very rough profiles.

What roof pitches does it suit?

It suits flat, corrugated and standing-seam metal roofs up to a 45 degree pitch. Match the flashing to the roof profile and press the base down to follow the sheet shape.

Can I order for delivery or pickup?

Yes. You can order online and choose Australia-wide delivery or pickup from our Truganina trade counter in Melbourne’s west. Delivery windows depend on your postcode, and we send a confirmation once your order is ready. For any questions call (03) 93941400 or email orders@singhroofingsupplies.com.au.