Maenofferen
The Stoneleaf Maenofferen slate is quarried
in the home of natural slate, at Blaenau Ffestiniog.
The Stoneleaf Maenofferen is a blue grey natural roof slate with a textured surface, often with characteristic transverse bedding lines. Historically the slates were mined underground in an extensive system of tunnels and chambers, however following extensive development works at the quarry they are now quarried by the open cast method.
Sizes produced range from 10"x6" up to 24"x14", however production is very much determined by the size of block that is available, and this does vary. Generally production is geared towards 20"x 10" and smaller, however larger sizes can be produced in very limited numbers. Random diminishing slates can also be made.
Specification
- Source:
- Maenofferen Quarry, Blaenau Ffestiniog, North Wales
- Approx Thickness:
- 6-8mm
- Colour:
- Blue Grey
- Surface:
- Textured with occasional transverse lines
- Grades:
- Bests and Seconds
- Holing:
- Slates are supplied pre-holed to customers' specification
- Slate and a Half:
- Available un-holed
- Approx Weight:
- 38kg/m2 based on 20"x 10"mm laid to 75mm lap
Guarantee: 100 year site specific guarantee available upon request
BS EN 12326-1:1:2004 Test Results: Water Absorption A1, Thermal Cycle T1, Sulphur Dioxide Exposure S1
