TECHNICAL DATA

 

Size	420mm X 330mm
Minimum Roof Pitch	17.5° (UK – see tables below)* 22.5° (ROI – see tables below)
Maximum Gauge	345mm
Cover Width	300mm
Covering Capacity	9.7 tiles per m2 (at 345mm gauge)
Weight per 1,000 tiles	5.00 tonnes
Laid weigth per m2	48.7 kg (at 345mm gauge)
Minimum batten sizes	see tables below
Tile nails	50 x 3.35mm aluminium clout head

*For roof pitches below 22.5⁰ and/or rafter lengths over 6 metres, please refer to Condron Concrete’s ‘Constructing a waterproof underlay system’ guide and video guide.

Republic of Ireland

Minimum headlap at all pitches (moderate exposure)¹	75mm
Minimum headlap at all pitches (severe exposure)**¹	100mm
Minimum batten size for rafters not exceeding 600mm c/c	47mm x 35mm

** superior underlay recommended ¹ maximum 6 meter after length

UK (Northern Ireland, England, Scotland & Wales)

Minimum headlap below 22.50 ¹	100mm
Minimum headlap at 22.50 & above ¹	75mm
Minimum batten size for rafters not exceeding 450mm c/c	38mm x 25mm
Minimum batten size for rafters not exceeding 600mm c/c	50mm x 25mm

¹ maximum 6 meter rafter length Note: Senior Slates should be laid in a broken (half) bond pattern and Mock Bond versions in a quarter/three quarter bond pattern.