BMI Redland Mini Stonewold

• An economical concrete slate, Mini Stonewold has interlocking edges ensuring quick and simple construction, reducing the laid cost of the roof
• A flat concrete slate which can be laid at pitches as low as 17.5°. Our most economical concrete slate with interlocking edges for simple construction. 

Size : 418mm x 334mm.
Minimum pitch : 17.5° at 100mm headlap.
22.5° at 75mm headlap.
Maximum pitch : 90°.
Maximum headlap : 125mm.
Minimum gauge : 293mm.
Maximum gauge : 318mm below 22.5°.
343mm 22.5° and over.
Tile thickness : 31mm.
Coverage : 10.7 slates/m2 at 318mm gauge.
9.9 slates/m2 at 343mm gauge.
Weight : 5.10 tonnes/1000.
Batten size : 38mm x 25mm – rafter centres up to 450mm.
50mm x 25mm – rafter centres up to 600mm.
Battens required : 3.15m/m2 at 318mm gauge.
2.92m/m2 at 343mm gauge.
Nail size : 50mm x 3.35mm.
Slate finish : smooth – through coloured.