Aztec Washer Company SQ901GA - Master Flash Square Flashing - (9 1/2 in. - 20 1/2 in.)

The Aztec Washer SQ901GA Standard Master Flash is the largest flashing in the Standard series, designed for oversized roof penetrations. Manufactured from gray EPDM, it provides outstanding resistance to UV, ozone, and weathering. The oversized flexible sleeve, with clearly marked trim lines, allows precise on-site cutting for pipes up to 20-1/4 inches. Its wide base conforms to most roof panel profiles and slopes, ensuring a watertight and long-lasting seal.

Key Features:

• Gray EPDM compound engineered for long-term resistance to weather, ozone, and UV.
• Extra-large trim-to-fit sleeve accommodates oversized pipes up to 20-1/4 inches.
• Flexible sleeve absorbs vibration, expansion, and contraction.
• Large base molds securely to roof panels and slopes.

• Part number: SQ901GA
• Material: Gray EPDM
• Pipe range: 9-1/2 in to 20-1/4 in (241–514 mm)
• Base size: 25 in (635 mm)
• Application: Oversized pipe penetrations for residential, commercial, and industrial roofs
• Temperature guidance: EPDM up to 212 °F (100 °C) continuous, 275 °F (135 °C) intermittent
• Warranty: 35 years (ICC-listed standard Master Flash)

Q: What type of sealant should be used with SQ901GA?
A: Urethane or silicone sealant is recommended. Avoid petro-chemical-based sealants.

Q: Can SQ901GA be used for very large roof penetrations?
A: Yes, it is designed for oversized pipes up to 20-1/4 inches (514 mm).

Q: Is SQ901GA suitable for high-heat applications?
A: EPDM is rated up to 212 °F (100 °C). For higher temperatures, silicone versions are recommended.

Q: How is SQ901GA installed?
A: Trim the sleeve to the required pipe size, slide over the pipe, form the base to the roof surface, apply sealant, and fasten securely.