Description
What is a Lead Ridge Slate?
A lead ridge slate is a pipe flashing specifically designed to create a watertight seal where a flue or soil pipe passes through the ridge of a pitched roof. Unlike a standard lead slate which sits on the slope of a roof, a ridge slate is shaped to sit flat across the ridge apex, with an upstand spigot that fits snugly around the pipe. This makes it the correct solution for any roof installation where the pipe exits at the very top of the roof rather than through the main tile or slate surface.
Typical applications include:
- Wood burning stove and multi-fuel stove flue pipes (twin wall)
- Gas and oil boiler flue pipes
- Soil and ventilation pipes exiting at the ridge
- Log burner installations requiring a ridge pipe flashing
Why choose a lead ridge slate?
Lead is the preferred material for ridge pipe flashings because of its exceptional durability, malleability, and weather resistance. A correctly installed lead ridge slate will last the lifetime of the roof. Our ridge slates are fabricated from 100% recycled Code 4 lead sheet to BS EN 12588, and are available in 5° pitch increments from 20° to 50° to ensure a precise fit on both slate and tiled roofs.
If you’re installing a twin wall flue from a wood burning stove, the most common sizes are:
For 5 inch twin wall generally 190mm diameter roof slate will be suitable. (but please check the external diameter of your pipe is less than the diameter of the lead slate)
For 6 inch twin wall generally 220mm diameter roof slate will be suitable. (but please check the external diameter of your pipe is less than the diameter of the lead slate)
All of our products are made in Cornwall, Great Britain. From 100% recycled Code 4 sheet lead milled to British Standard BS EN 12588
If you cannot find the size you require please contact us as we can quickly fabricate bespoke sizes.














Willie (verified owner) –
Good response, product and lead-time , would highly recommend
Helen (verified owner) –
5 star
Mike –
Ordered and delivered quickly
Good quality workmanship
Will highly recommend these guys
James (verified owner) –
First class service , quick, accurate, well priced and great communication.
Clive (verified owner) –
Excellent service by leadworx and quick delivery would highly recommend using them.
Nathan Wrench –
Very prompt delivery and the saddle looks great
Harry Wilson –
Service was excellent.
Gareth Irwin –
The flashing arrived really fast considering i was in northern ireland and they made it. Great service thank you
Mark Robinson –
Fantastic service- bespoke lead flashing arrived within the week and way better quality than my previous supplier ie no additional work to make it fit properly. I will be using Leadworx for all my future lead needs
Douglas Mcgavin (verified owner) –
5 star
Justin Millman (verified owner) –
Great product, receive quickly and was exactly as described, great workmanship
Paul (verified owner) –
Hi Leadworx, received my ridge slate yesterday, great product, very well packaged and speedy delivery, well pleased.
Steven (verified owner) –
Ordered Monday and arrived Friday from Cornwall to the Highlands which is very fast considering were classed as an island to most of Britain . Quality workmanship, fantastic value for money and a perfect fit .Would definitely recommend
Mark Dowding –
Safely received and looks great – thanks
Mike Heath –
Morning, I had the lead fitted round the chimney it fits perfectly thanks for all your help and prompt delivery.