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Manufacturer Varies by Location 3N1 Auto Flashing, Mill Aluminum Base with Elastomeric Collar, 1 in. to 3 in. Pipe
Regular price $10.85Orders start at $399 — combine any items to reach the minimum. Learn more
Manufacturer Varies by Location 3N1 Auto Flashing, Mill Aluminum Base with Elastomeric Collar, 1 in. to 3 in. Pipe
The 3N1 Auto Flashing is a pipe flashing with a rustproof stamped aluminum base and a premium elastomeric collar for sealing penetrations in residential roofing. It fits pipes from 1 in. to 3 in. in diameter and is sold as one piece per order. Pair it with compatible pipe flashings and underlayment accessories on the same roof.
Key Features:
- Water infiltration protection: Designed to protect against water infiltration around roof pipe penetrations.
- Rustproof aluminum base: The stamped aluminum base is rustproof and allows for easy shaping of the flashing on the roof.
- Elastomeric collar: A premium elastomeric collar seals the pipe with excellent ozone resistance.
- 180°F heat rating: The collar is rated for 180° F continuous heat.
- Easy installation: The aluminum base can be formed to conform to the roof surface during installation.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | Manufacturer Varies by Location |
| Sell unit | 1 piece |
| Product line | 3N1 Auto Flashing |
| Category | Residential Roofing > Flashing > Pipe Flashing |
| Available colors | ['Mill'] |
| Available sizes | ['1" to 3"'] |
| Dimensions | Fits pipe diameters 1 in. to 3 in. |
| Material | Stamped aluminum base with elastomeric collar |
| Finish / texture | Mill |
| Heat rating | Collar rated 180° F continuous heat |
| Intended use | Sealing pipe penetrations against water infiltration |
Coverage & How Much You Need:
One flashing seals a single pipe penetration between 1 in. and 3 in. in diameter. Choose the size closest to the pipe so the collar grips tightly.
Fit and Compatibility:
Use on residential roofing systems around standard pipe penetrations. Underlayment, sealants and adjacent flashing accessories are sold separately.
Frequently Asked Questions (FAQ):
Q: What pipe sizes does this flashing fit?
A: It fits pipe diameters from 1 in. to 3 in.
Q: What is included in the order?
A: One 3N1 Auto Flashing with mill aluminum base and elastomeric collar.
Q: Will the base rust?
A: No, the stamped aluminum base is rustproof.
Q: Can it handle hot vent pipes?
A: The elastomeric collar is rated for 180° F continuous heat.
Q: How is it installed?
A: Shape the aluminum base to the roof surface and slip the collar over the pipe; seal edges per standard flashing practice.
Q: Is the collar ozone resistant?
A: Yes, the premium elastomeric collar offers excellent ozone resistance.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
Match the collar opening to the pipe diameter—1 to 3 in. covers most residential plumbing vents. Form the aluminum base flat to the roof plane so water sheds over it, not under it, and lap the top edge under shingles or membrane per standard flashing practice. The 180° F collar rating makes it suitable for warm vent stacks where standard collars may degrade.
Roof work involves fall hazards; use appropriate fall protection and handle the shaped aluminum edges with gloves.
Order the 3N1 Auto Flashing to seal your 1–3 in. pipe penetrations today.
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