TECHNICAL DATA

 

Size	420mm X 330mm
Minimum Roof Pitch	17.5⁰ (UK – see tables below)* 22.5⁰ (RoI – see tables below)
Maximum Gauge	345mm
Cover Width	300mm
Covering Capacity	9.7 tiles/m2 (at 345mm gauge)
Weight per 1000 tiles	5.00 tonnes
Laid weight 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 metre rafter length

UK (Northern Ireland, England, Scotland & Wales)

Minimum headlap below 22.5°¹	100mm
Minimum headlap at 22.5° & 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: : Slate Tiles should be laid in a broken (half) bond pattern and Mock Bond versions in a quarter/three quarter bond pattern.