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Blue Bangor Technical Details
| Types of Slating | Pitched Roof Slating |
| Base | Rafters 200mm x 50mm @ 400 mm centres |
| Pitch | 45 Degrees { please check pitch} |
| Slates | New 'Penrhyn' Blue Bangor Slates |
| Size | 500 x 300 mm |
| Minimum Head-lap | 75mm |
| Holing Gauge | 303mm |
| Bond | Half Lap |
| Fixings | Copper Slate Nails 35mm x 3.35mm Dia |
| Slating Battens | 50mm x 25mm Treated |
| Counter Battens | 50 x 25mm Treated |
| Batten Centres | 213mm |
| Underlay | Tyvek Pro 'Breather Membrane' |
| Minimum Horizontal Lap | 150mm |
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