Aztec MetalFlash Square Base No 6 (125–230 mm) – Black EPDM

The Aztec MetalFlash Square Base No 6 is a professional-grade flashing designed for roofing penetrations ranging from 125 mm to 230 mm. Specifically built for profiled metal roof systems, this robust rubber-to-roof seal combines flexible EPDM rubber with a mouldable aluminium base, ensuring durable performance and watertight protection.

Specifications & Materials

Feature	Specification
Pipe Size Accommodated	125–230 mm
Base Profile	Square aluminium, approximately 363 mm width
Sleeve Material	Black EPDM rubber
Roof Pitch Compatibility	Flat to 45° metal profiles
Temperature Resistance	Up to +135 °C intermittent; +100 °C continuous
Colour Options	Black EPDM (also available in Grey or Red Silicone)
Warranty	25-year manufacturer guarantee

Why Choose This Flashing?

Substantial Coverage: Designed for larger penetrations, accommodating roof vents, flues, and significant conduits.
Weatherproof & Resilient: EPDM rubber ensures long-term flexibility and resistance to UV, ozone, and temperature extremes.
Precision Fit: Soft aluminium base can be shaped on-site to match roof corrugations for tight integration.
Quick Installation: No hot works, mastics, or complex tools needed—cut to pipe size, seat sleeve, shape base, fasten, and seal.

Product Variants

Aztec’s MetalFlash range includes:

Grey EPDM and High-Temp Red Silicone versions (also rated to +260 °C)
Alternate sizes: No 3 (5–125 mm), No 4 (70–175 mm), No 7 (150–300 mm), and larger for oversized penetrations
Customisable colour finishes to match BHP roofing palettes

Installation Overview

Trim EPDM cone for a firm, tailored fit around the pipe.
Centre and press the aluminium base onto the roof profile for full contact.
Secure using self-drilling screws or pop rivets.
Apply an appropriate roof-grade silicone sealant around the base for a weathight finish.

Ideal Applications

This flashing is best suited for large ventilation vents, solar‑thermal pipes, flues, roof-mounted cable conduits, and service penetrations where superior sealing and performance are critical.

The Aztec MetalFlash Square Base No 6 (125–230 mm, Black) is a top-tier solution for sealing sizeable metal-roof penetrations. With its robust EPDM sleeve, adaptable aluminium base, and comprehensive warranty, it offers a reliable, efficient, and weatherproof seal. For higher heat scenarios, consider the silicone variant; for smaller penetrations, explore the No 3 or No 4 sizes. This flashing provides tradespeople with a trusted, high-performance answer for demanding roofing applications.