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FlashCo L-Series Lead Pipe Flashing, 12 in. x 12 in. Base, 4# Lead, Multiple Pipe Sizes and Roof Pitches
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FlashCo L-Series Lead Pipe Flashing, 12 in. x 12 in. Base, 4# Lead, Multiple Pipe Sizes and Roof Pitches
FlashCo L-Series lead flashing seals round roof penetrations with an all-lead, one-piece boot. Each unit is built from 4# lead with a cylindrical riser matched to the pipe size and a 10 in. or 12 in. square base, in pitch ranges from 4/12 up to 12/12. Choose the riser diameter and pitch range that match your penetration.
Key Features:
- All-lead build: Constructed entirely of 4# lead for durability and workability at the penetration.
- Watertight seal: The base material wraps up into the riser to shed water away from the pipe penetration.
- No penetrating fasteners: Lead does not need to be fastened to the insulation or roof deck, cutting installation time.
- No fastener electrolysis: Dissimilar metals such as fasteners or steel boots are not required, eliminating electrolysis concerns.
- Self-supporting riser: The cylindrical lead riser matches the penetration shape, so no reinforcement is needed.
- Multiple pitch ranges: Offered for 4/12 to 6/12, 7/12 to 9/12, and 10/12 to 12/12 roof slopes.
- Pipe size options: Available with 1-1/2 in., 2 in., 3 in., or 4 in. risers.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | FlashCo |
| Sell unit | 1 piece (per selected variant) |
| Product line | FlashCo L-Series pipe flashing |
| Available colors | Mill |
| Available sizes | 16 variants: 10 in. x 10 in. or 12 in. x 12 in. base; 1-1/2 in., 2 in., 3 in., or 4 in. riser; 4/12 to 6/12, 7/12 to 9/12, or 10/12 to 12/12 pitch; one 2.5# 12 in. x 12 in. base 3 in. 10/12 to 12/12 option |
| Material | Lead, 4# (one 2.5# variant) |
| Finish / texture | Mill lead |
| Dimensions | 12 in. x 12 in. base (most variants) or 10 in. x 10 in. base |
| Riser sizes | 1-1/2 in., 2 in., 3 in., 4 in. |
| Riser height | Standard 12 in. riser |
| Intended use | Watertight flashing for round roof pipe penetrations |
| Assembly | One-piece; no fastening to deck or insulation required |
Fit and Compatibility:
Designed for standard round vent pipe penetrations on residential roofs; select the riser diameter matching the pipe and the pitch range matching the roof slope. Lead flashing alone may be paired with sealant and counterflashing practices per the roofing system specification.
Frequently Asked Questions (FAQ):
Q: What comes with one order?
A: One lead pipe flashing unit in the selected base size, riser diameter, lead weight, and pitch range.
Q: Which size should I choose?
A: Match the riser diameter to your vent pipe (1-1/2 in., 2 in., 3 in., or 4 in.), the base to your roof layout, and the pitch range to your roof slope.
Q: Does it need fasteners?
A: No, the flashing does not need to be fastened to the insulation or roof deck; lead's mass and malleability hold it in place.
Q: Why lead instead of a steel or rubber boot?
A: Lead eliminates penetrating fasteners and dissimilar-metal contact, avoiding electrolysis complications noted by the manufacturer.
Q: Is it compatible with all roof pitches?
A: Variants cover 4/12 to 6/12, 7/12 to 9/12, and 10/12 to 12/12 slopes; pick the range that includes your pitch.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
For vent penetrations on shingle or membrane roofs, lead remains the premium choice because it can be formed tightly to the pipe without fasteners through the deck. Match the riser to the pipe diameter and choose the pitch-banded version for your slope so the base sits correctly. On low-slope roofs the 4/12 to 6/12 version is the usual pick; verify lead weight requirements with the roof system specification.
Lead is a heavy, soft metal; handle with gloves, avoid cutting or heating it without proper precautions, and follow local codes for lead flashing use.
Order the FlashCo L-Series lead flashing sized to your pipe and pitch for a watertight, fastener-free penetration seal.
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