Portals Plus 24035, Alumi-Flash Extra Tall Base w/412 Black Cap

The Portals Plus 24035 Alumi-Flash Extra Tall Base with C-412 Black Cap is engineered for flashing locations where up to four pipes sized 1″-2″ in diameter penetrate the roof. The flashing includes a .060″ spun aluminum base unit with a height of 13″ and a base diameter of 14″. The base features an 8″ collared opening with two roll-formed beaded sealing rings. The molded EPDM cap model C-412 is supplied and includes the stainless-steel Snaplock clamp, forming a mechanical, weather-tight pressure seal between the cap and base.

Key features:

• Designed for up to four pipes sized 1″-2″ diameter.
• .060″ spun aluminum base unit, 13″ height, 14″ base diameter, 8″ collared opening with two roll-formed sealing beads.
• Molded EPDM cap model C-412 matched with stainless-steel Snaplock clamp to form a mechanical seal.
• Compatible with all roof types and provides a retrofit/new flashing solution for multiple penetrations.

• SKU: 24035 (POR-24035)
• Product type: Alumi-Flash Extra Tall Base with C-412 Black Cap
• Penetration capacity: Up to four pipes sized 1″-2″ in diameter. 
• Base construction: .060″ spun aluminum, height 13″, base diameter 14″, 8″ collared opening with two sealing rings. 
• Cap: EPDM molded cap model C-412 with stainless-steel Snaplock clamp.

• Install and roof-in the spun aluminum base unit per Portals Plus installation instructions and the roofing membrane manufacturer’s guidelines.
• Insert up to four pipes sized 1″-2″ diameter through the base collar opening.
• Seat the C-412 EPDM cap so its internal grooves engage the two roll-formed sealing beads on the collar.
• Tighten the stainless-steel Snaplock clamp evenly to complete the mechanical seal.
• Inspect the assembly to ensure proper bead engagement and secure clamp fit for a watertight installation.

Q: What pipe sizes does this model support?
A: It supports up to four pipes sized 1″-2″ in diameter.

Q: What are the base dimensions and materials?
A: The base is made of .060″ spun aluminum, 13″ high, with a 14″ base diameter and an 8″ collared opening with two roll-formed sealing beads.

Q: What cap model is used and how is it sealed?
A: The cap is model C-412 (molded EPDM) and is secured to the base collar using a stainless-steel Snaplock clamp forming a mechanical pressure seal.

Q: Is this product suitable for all roof types?
A: Yes — the Alumi-Flash Extra Tall system is compatible with all roof types and is designed to replace traditional flashing methods for grouped penetrations.