Aztec Washer Company RF201BP - Retrofit Master Flash (4" - 9-1/4")

Aztec Washer RF201BP is a wraparound, split-boot retrofit flashing for situations where a standard slide-over boot won’t fit. The size #2 model covers medium pipe and conduit penetrations and conforms to common metal roof panel profiles and roof pitches. Molded from UV- and ozone-resistant black EPDM, it trims cleanly on site, fastens quickly with snap-on hardware, and accepts a zip tie at the collar to help complete the seal.

Key Features:

• Split, wraparound design for true retrofit installs — no disassembly of lines.
• Marked sizing rings for quick, accurate trimming on site.
• Flexible base conforms to panel profiles and roof pitch variations.
• Snap-on fasteners included; collar channel accepts a zip tie.

• Product line: Standard Retrofit Master Flash.
• Part number: RF201BP.
• Size: #2.
• Material/color: EPDM, black.
• Pipe range: 4 in to 9 in (101–228 mm).
• Base size: 14-1/4 in (362 mm).
• Initial top opening: 4 in (101 mm).
• Installation method: Wraparound seam; fasten; seal; optional zip tie at collar.
• Temperature guidance (EPDM, general): Continuous to about 212 °F (100 °C); intermittent to about 275 °F (135 °C).
• Typical use: Roof or sidewall penetrations where slide-over boots won’t fit.

Q: What makes RF201BP a retrofit flashing?
A: The split boot wraps around existing pipes or conduit and fastens to seal, so you don’t need to disconnect lines.

Q: What pipe sizes does size #2 cover?
A: 4 in to 9 in (101–228 mm).

Q: Do I need a clamp at the collar?
A: The seal is by compression; many installers add a zip tie at the collar. For the base, avoid petro-chemical-based sealants; urethane or silicone caulking is typically recommended.

Q: When should I choose silicone instead of EPDM?
A: Use silicone where sustained temperatures exceed typical EPDM ranges; check equipment temperature specs to select the right compound.