Aztec MetalFlash Square Base No 3 (5–125 mm) – Black EPDM The Aztec MetalFlash Square Base No 3 is a superior metal roof pipe flashing engineered for simple, reliable weatherproofing of penetrations ranging from 5 mm to 125 mm in diameter. Designed specifically for profiled metal roofing, this flashing delivers a watertight seal without the need for mastics or heat, blending durability with on-site adaptability. Key Specifications & Performance Feature Details Penetration Range 5–125 mm Temperature Rating EPDM: up to 135 °C intermittent, 100 °C continuous Base Shape Square aluminium base, approximating 196–221 mm width Colours Available Standard in Black; also available in Grey and Red Silicone Roof Pitch Compatibility Suits 0–45° flat, corrugated and standing seam roofs Warranty Full 25‑year manufacturer’s warranty EPDM rubber sleeve is UV-, ozone- and weather-resistant, providing lasting elasticity and resilience. The square aluminium base is soft enough to mould to profiled roofing yet firm enough to maintain a tight, secure seal. Product Advantages Flexible sleeve design allows movement and vibration without leaking No hot work or additional sealants required—cut, shape, attach High-grade EPDM resists extreme climates and weathering Aluminium base accommodates all common metal roofing profiles Pre-set durability: suitable for standard and BAL-rated roofs Available Variations Aztec offers several complementary MetalFlash models: Grey EPDM or Red High-Temp Silicone versions, rated to 260 °C Larger penetration sizes via No 4, 6, 7, etc., increasing up to 300 mm Square, round, retrofit, solar-twin, and vent flashings—all with interchangeable bases Typical Applications Pipe flues, ventilation stacks, conduits on metal roofs Roof cable entries and sensor stalks Retrofitting new penetrations or re-sealing old flashings Supporting compliance on BAL-rated or coastal properties Installation Guide Choose the correct MetalFlash size for your penetration Trim the EPDM sleeve so it’s snug and slightly undersized relative to pipe Press the aluminium base into the roof profile, forming it to the surface Secure using self-drilling screws or sealed pop rivets Seal edges with quality roof-gutter silicone The Aztec MetalFlash Square Base No 3 (5–125 mm, Black) flashing combines premium EPDM rubber with a soft-conform aluminium base to create a neat, secure, and long-lasting seal for metal-roof penetrations. With a high temperature tolerance, adaptability across multiple roof shapes, and robust warranty, it is the professional’s choice for versatile and dependable heat-resistant flashings. For higher temperatures, colour variants, or larger penetrations, explore the MetalFlash No 3–No 7 range in EPDM and high‑temperature silicone options.
