BMI Redland Concrete Universal Angle Mono Ridge 450mm

BMI Redland Concrete Universal Angle Mono Ridge 450mm 

They can be dry fixed, mortar bedded only or mortar bedded and mechanically fixed. When ridge tiles are mortar bedded & mechanically fixed, use Clamping Plates and woodscrews, complete with neoprene washers and foam grommets. A 6 mm diameter hole should be carefully drilled centrally in each ridge tile.