Pitched Lead Slates for Soil Pipes & Flue Pipes

Rated 5.00 out of 5 based on 68 customer ratings.

Price range: £35.75–£183.70

The Leadworx Pitched Roof Slate is a premium lead weathering slate designed to provide a durable, weatherproof seal around flue pipes, soil pipes, boiler flues, or ventilation pipes where they penetrate through a slate or tiled pitched roof.

Crafted in Cornwall, Great Britain, each flashing is manufactured from 100% recycled Code 4 sheet lead, milled to British Standard BS EN 12588 for consistency in thickness, flexibility, and performance.

Description

Description

Made from Code 4 Lead – Complies with BS EN 12588 for thickness tolerance and long-lasting performance.

Angle-Specific Options – Available in 5° pitch increments to closely match your roof’s angle and ensure a snug, watertight fit.

Welded Spigot Design – The upstand spigot is designed with a built-in tolerance of ±2.5°, ensuring easy installation on slightly uneven roofs.

Handcrafted in the UK – Proudly fabricated in Cornwall from sustainable, recycled lead.

Common Size Guide for Pitched Slates

To assist in choosing the right pitched slate size, here are typical recommendations for twin-wall flue systems:

  • 5-inch twin wall flue → 190mm diameter roof slate
  • 6-inch twin wall flue → 220mm diameter roof slate
  • Typical sizes for 110mm soil pipes require 115mm lead slate

Important: Always check the external diameter of your pipe. The roof slate must have an internal spigot diameter greater than the external diameter of your pipe for proper fitting.

Lead Slate Size Guide – Soil Pipes, Flue Pipes & Twin-Wall Systems

  1. Determine Pipe Type: Is it a stove flue, boiler vent, or soil/ventilation pipe?
  2. Measure External Diameter: Use a tape measure to find the external diameter of the pipe where it will pass through the roof.
  3. Match to Slate Size:
    • Ensure the roof slate’s internal spigot diameter is larger than the pipe’s external diameter.
    • Select the correct pitch angle of your roof in 5° increments (e.g., 25°, 30°, 35°).
  4. Still Not Sure? If in doubt, please contact us with your pipe dimensions and roof pitch, we can help confirm the correct size or fabricate a bespoke flashing tailored to your needs.

If you cannot find the exact size or pitch angle you need, we offer a fast turnaround on custom-made lead slates. Just get in touch!

Specifications
Spigot Height 150mm min
Width Spigot Size + 300mm
Depth Spigot Size + 300mm
Spigot Diameter Size requested
Spigot Location Central
Roof Pitch (Degrees) 20, 25, 30, 35, 40, 45

Customer Reviews

  1. Peter (verified owner)–May 21, 2026: A very high quality product and very easy to fit. Great communication with the company and very fast delivery.
  2. Ian (verified owner)–April 2, 2026: Easy to order exactly what I wanted and prompt delivery.
  3. Alan–January 22, 2026: Great communication and fast delivery.
  4. Kian (verified owner)–November 13, 2025: Worked perfectly. Delivered on time. Great quality product.
  5. David (verified owner)–September 11, 2025: Can’t fault it, quality item and craftsmanship fitted like a glove first time. Won’t bother looking elsewhere for any lead fabrication needed again.
  6. Stephen–September 11, 2025: Great service, perfect lead tile for taking my soil pipe out through a roof slope on a loft conversion job Really helpful. Many thanks.
  7. Graham (verified owner)–September 11, 2025: Good neat work.
  8. Steve (verified owner)–September 11, 2025: 5 star.
  9. Roger–September 11, 2025: Excellent service and quality craftsmanship , rapid delivery! 👌👌👌
  10. Andrew (verified owner)–August 12, 2025: Excellent fitted perfectly. Brilliant response and delivery. Thank you.

... (The list continues up to 68 reviews)