No finish

Cedral Birkdale slate has a smooth surface and dressed edges. It offers a traditional and pleasing look of a natural slate at an affordable price, using nail and rivet fixing.

With more cement and fibres than any other, Cedral slates are the strongest slates in the market, tough enough to withstand the most volatile weather conditions.

Birkdale is available in a Blue Black colour. The edge finish and design flexibility means it is ideal as both a roofing and cladding solution.

Benefits and Sizes

  • A+ Green guide rating
  • Can achieve a BES 6001 'Very Good' rating
  • Environmental product declaration available
  • Can be used for both roof and facade
  • Fibre cement is a recyclable building material
  • Low maintenance
  • Low carbon footprint of 13 CO2e/m2

Click to download our Declaration of Performance

600mm x 300mm

Technical data

Fixing method Nail and rivet Slate hooks
Size of slate 600mm x 300mm 600mm x 300mm

Minimum pitch**: Moderate exposure

22.5° (100mm lap)
20° (110mm lap)
20° (150mm lap)
Minimum pitch**: Severe exposure 25° (100mm lap)
22.5° (110mm lap)
20° (150mm lap)
Maximum pitch 90° 90°
Typical laps 100, 110mm 150mm
Maximum gauge 245 - 250mm 225mm
Slate thickness 4mm 4mm
Covering capacity (net) 13.4 slates/m2 at 100mm lap
13.6 slates/m2 at 110mm lap
14.8 slates/m2 at 150mm lap
Weight of slating (appox)

20.4 kg/m2 (0.20 kN/m2)
at 100mm lap

20.9 kg/m2 (0.20 kN/m2)
at 110mm lap

22.8 kg/m2 (0.21 kN/m2)
at 150mm lap
Battens required (net) 4.00 lin.m/m2 at 100mm lap
4.08 lin.m/m2 at 110mm lap
4.45 lin.m/m2 at 150mm lap
Batten size
38 x 25mm for rafters/supports not exceeding recommended 450mm centres
38 x 25mm for rafters/supports not exceeding recommended 450mm centres
(fixed to BS 5534)
50 x 25mm for rafters/supports not exceeding 600mm centres
50 x 25mm for rafters/supports not exceeding 600mm centres
Fixings Slate nails (30 x 2.65mm)
Copper disc rivets
(19mm dia. x 2mm stem)
Slate nails*** (30 x 2.65mm)
Copper disc rivets***
(19mm dia. x 2mm stem)
Fitting Screws
14 gauge self sealing
14 gauge self sealing
Authority BS EN 492 BS EN 492

Cedral fibre cement slates meet the strength requirement of BS EN 492, achieving an average bending movement greater than 50 NM/M (Class B). Cedral Fibre Cement Slates have an average density of 1970kg/m³ (minimum of 1750kg/m³) when tested to BS EN492 and a nominal thickness of 4mm.

*Made to order

**The minimum recommended pitch and lap may be influenced by special circumstances, please contact the Technical Advisory Team

***For local areas of roof