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Del Sil
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DESCRIPTION
Source: Spain
Approx thickness: 6mm
Colour: Blue/Black
Texture: Riven
Sizes Available: 500x300, 500x250, 400x250, 400x220, 400x200, 350x250, 350x200, 300x200, 300x150
Grades: Best, First Mix and Standard
Pre-holing: Slates are generally available pre-holed to provide a 75-90mm lap, however slates can be supplied to alternative laps or un-holed for hook fixing
Slate and Half: Available Un-holed
Approx Weight: 36kg/m2 based on 500x250 laid to a 75mm lap
Guarantee Period: Best: 75; First Mix: 50; Standard: 30 years
BS EN 12326-1:2004 Test Results: Water Absorption A1, Thermal Cycle T1, Sulphur Dioxide Exposure S1 |
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Ultra
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DESCRIPTION
Source: Spain
Approx thickness: 5mm
Colour: Blue/Black
Texture: Smooth
Sizes Available: 600x300, 500x300, 500x250, 400x250, 450x220, 400x200
Grades: Best only
Pre-holing: Slates are generally available pre-holed to provide a 75-100mm lap, however slates can be supplied to alternative laps or un-holed for hook fixing
Slate and Half: Available Un-holed
Approx Weight: 30kg/m2 based on 500x250 laid to a 75mm lap
Guarantee Period: Best: 75; Prime Mix: 50 years
BS EN 12326-1:2004 Test Results: Water Absorption A1, Thermal Cycle T1, Sulphur Dioxide Exposure S1
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Cardinal
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DESCRIPTION
Source: Spain
Approx thickness: 4mm
Colour: Blue/Black
Texture: Smooth
Sizes Available: 500x250 and 450x220
Grades:Best, First Mix and Standard
Pre-holing: Available Pre-holed to 75-100mm lap only
Slate and Half: Available Un-holed
Approx Weight: 26kg/m2 based on 500x250 laid to a 75mm lap
Guarantee Period: Best: 75; First Mix: 50; Standard: 30 years
BS EN 12326-1:2004 Test Results: Water Absorption A1, Thermal Cycle T2, Sulphur Dioxide Exposure S1 |
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Barco
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DESCRIPTION
Source: Spain
Approx thickness: 5mm
Colour: Blue/Black
Texture: Smooth
Sizes available:600X300, 500X300, 500X250, 450X220, 400X250, 400X220, 400X200, 350X250
Grades:Best, First Mix and Standard
Pre-holing: Slates are generally available pre-holed to provide a 75-100mm lap, however slates can be supplied to alternative laps or un-holed for hook fixing
Slate & Half: Available Un-holed
Approx Weight: 30kg/m2 based on 500x250 laid to a 75mm lap
Guarantee Period: Best: 75; First Mix: 50; Standard: 30 years
BS EN 12326-1:2004 Test Results: Water Absorption A1, Thermal Cycle T2, Sulphur Dioxide Exposure S1 |
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Classic
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DESCRIPTION
Source: Spain
Approx thickness: 7mm
Colour: Blue/Grey
Texture: Riven
Sizes available: 600X300, 500X300, 500X250, 450X220, 400x300, 400X250, 400X220, 400X200, 350X250, 350x200 and 300x200
Grades: Best, First Mix and Extra Heavy
Pre-holing: Slates are generally available pre-holed to provide a 75-100mm lap, however slates can be supplied to alternative laps or un-holed for hook fixing
Slate and Half: Available Un-holed
Approx Weight: 45kg/m2 based on 500x250 laid to a 75mm lap
Guarantee Period: Best: 75; First Mix: 50; Standard: 30 years
BS EN 12326-1:2004 Test Results: Water Absorption A1, Thermal Cycle T1, Sulphur Dioxide Exposure S1 |
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Conwy Black
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DESCRIPTION
Source: China
Approx thickness: 6-8mm
Colour: Black
Texture: Smooth
Sizes Available: 600x300, 500x250 and 400x250
Grades: Best only
Pre-holing: 600x300 and 500x250 available pre-holed to 75-100mm lap only, 400x250 to 80-95mm lap
Slate and Half: Available Un-holed
Approx Weight: 35kg/m2 based on 500x250 laid to a 75mm lap
Guarantee Period: Best: 75 years
BS EN 12326-1:2004 Test Results: Water Absorption A1, Thermal Cycle T1, Sulphur Dioxide Exposure S1 |
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Cornish Grey
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DESCRIPTION
Source: China
Approx thickness: 6-8mm
Colour: Grey
Texture: Smooth
Sizes Available: 600x300, 500x250 and 400x250
Grades: Best only
Pre-holing: 600x300 and 500x250 available pre-holed to 75-100mm lap only, 400x250 to 90-105mm lap
Slate and Half: Available Un-holed
Approx Weight: 36kg/m2 based on 500x250 laid to a 75mm lap
Guarantee Period: Best: 75 years
BS EN 12326-1:2004 Test Results: Water Absorption A1, Thermal Cycle T1, Sulphur Dioxide Exposure S1 |
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Celtic Grey
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DESCRIPTION
Source: Spain
Approx thickness: 7-9mm
Colour: Blue Grey
Texture: Rugged
Sizes Available: 500x250
Grades: Best only
Pre-holing: Available pre-holed to 75-100mm lap only
Slate and Half: Available Un-holed
Approx Weight: 36kg/m2 based on 500x250 laid to a 75mm lap
Guarantee Period: Best: 100 years
BS EN 12326-1:2004 Test Results: Water Absorption A1, Thermal Cycle T1, Sulphur Dioxide Exposure S1 |
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Stoneleaf
Ffestiniog
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DESCRIPTION
Source: Wales
Approx thickness: 5 and 8mm
Colour: Blue Grey
Texture: Smooth
Sizes Available: From 255x155 to 610x355. Larger sizes can be produced
Grades: Best and Strong
Pre-holing: Slates are generally available unholed, however a holing service can be offered.
Slate and Half: Available Un-holed
Approx Weight: 31kg/m2 based on a 510x255mm laid to a 75mm lap
Guarantee Period: Best: 100 years
BS EN 12326-1:2004 Test Results: TBA, samples currently undergoing testing |
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Weathering
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DESCRIPTION
Source: China
Approx thickness: 6-7mm
Colour: Black
Texture: Smooth
Sizes Available: 600x300 and 500x250
Grades: Best only
Pre-holing: Available pre-holed to 75-100mm lap
Slate and Half: Available Un-holed
Approx Weight: 36kg/m2 based on 500x250 laid to a 75mm lap
Guarantee Period: Best: 30 years
BS EN 12326-1:2004 Test Results: Water Absorption A1, Thermal Cycle T1, Sulphur Dioxide Exposure S1 |
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Cumbrian Blue Grey
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DESCRIPTION
Source: England
Approx thickness: 8 and 10mm
Colour: Blue Grey
Texture: Rugged
Sizes Available: 510x305mm
Grades: Best and Heavy
Pre-holing: Slates are generally available un-holed, however a holing service can be offered
Slate and Half: Available Un-holed
Approx Weight: 44.5kg/m2 based on a 510x305 laid to a 77mm lap
Guarantee Period: Best: 50 years
BS EN 12326-1:2004 Test Results: Water Absorption A1, Thermal Cycle T1, Sulphur Dioxide Exposure S1 |
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Cumbrian Green
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DESCRIPTION
Source: England
Approx thickness:10-12mm
Colour: Green
Texture: Rugged
Sizes Available: Various, including sized and random diminishing
Grades: Best and Strongs
Pre-holing: Slates are supplied un-holed
Approx Weight: 57.14kg/m2 based on 510mm down to 305mm long by random widths laid to a 77mm lap
Guarantee Period: Best: 50 years
BS EN 12326-1:2004 Test Results: Water Absorption A1, Thermal Cycle T1, Sulphur Dioxide Exposure S1 |
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Heather Blue
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DESCRIPTION
Source: Wales
Approx thickness: 6,8 and 10mm
Colour: Heather Blue
Texture: Smooth
Sizes Available: From 270x180mm up to 600x350mm
Grades: Best only
Pre-holing: Slates are generally available un- holed, however a holing service can be offered
Slate and Half: Available Un-holed
Approx Weight: 35.4kg/m2 based on a 500x300 laid to an 80mm lap
Guarantee Period: Best: 100 years
BS EN 12326-1:2004 Test Results: Water Absorption A1, Thermal Cycle T1, Sulphur Dioxide Exposure S1 |
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Fixing: Stoneleaf natural slates should be fixed in accordance with BS5534.
To achieve a neat and attractive finish, the company recommends the following:
- Mark out the slate joints on the batten, allow for 5mm gap between slates to allow for free drainage. We recommend that marks are made at least every third course.
- Each slate is to be fixed to treated softwood batten, size 50x25mm, with either 2 copper nails. 3.35mm diameter; nails should be of sufficient length to penetrate the batten by 15mm or stainless steel slate hooks nail type.
- Slates are split by hand and are subject to a variance in thickness. It is imperative that the slates, prior to fixing, are sorted out into at least three or four thicknesses.
The thickest slate used at eaves level, progressing to the thinnest slate at the top of the roof. Slates of the same thickness should be used in the same course. A small percentage of slates may be twisted, (more if Standard grade slate is used). These slates should not be fixed as they are likely to "kick up", however they can be cut down and used as an under-eave slate.
Roofing contractors who wish to obtain a more comprehensive step by step fitting procedure should contact our technical department.
Compatibility
Slate is compatible with other common durable building material, lasting the lifetime of the building itself.
Storage
Slates should be stored on dry level ground at a maximum of 2 pallets high. Loose slates should be stacked on their longest side on battens.
Accessories
In line slate vents - available to match all sizes either in plastic (riven slate finish) or natural slate made to order.
For further technical advice please contact our technical department. |
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