The Modern interlocking tile is a flat, smooth, single-lap interlocking design whose slate-like appearance is enhanced by a broken bond laying pattern.All Marley concrete interlocking tiles can achieve an 'A+' rating (the lowest environmental impact)

• Tried, tested and trusted, the Marley Modern has become a staple product for roofers over many years17.5° minimum pitch available for smooth finish tiles; granular finish tiles have a higher minimum pitch requirement

• Size of Tile	420mm x 330mm
  Minimum Pitch	22.5° Smooth (75mm headlap) 17.5° Smooth (100mm headlap) 30° Granular (75mm headlap) 25° Granular (100mm headlap)
  Maximum Pitch	90°
  Minimum Headlap	75mm (22.5° and above)
  Maximum Gauge	345mm
  Cover Width	292mm (nominal)
  Covering Capacity	9.9 tiles /m² at 75mm headlap 10.7 tiles /m² at 100mm headlap
  Weight of Tiling	50kg/m² (0.49kN/m²) at 75mm headlap 54kg/m² (0.53kN/m²) at 100mm headlap
  Battens Required	2.9 lin.m/m² at 75mm headlap 3.1 lin.m/m² at 100mm headlap
  Batten Size Recommended	38 x 25mm for rafters/supports not exceeding 450mm centres 50 x 25mm for rafters/supports not exceeding 600mm centres
  Tile Nails	50mm x 3.35mm
  Fixing Clips	Eaves, Verges and Tile Clips
  Hanging length	397mm (nominal)
  Notes	The effectiveness of the tile or slate to operate at the minimum recommended pitch and lap may be influenced by special circumstances. Guidance on pitch and lap should be obtained from the Technical Advisory Service for the following: Interlocking tiles and slates where the roof slope exceeds 6 metres in length and/or the site is rated to be in a severe exposure category. Double-lap fibre cement slates where the roof slope exceeds 6 metres in length (severe/very severe exposure) and 9 metres in length (sheltered/moderate exposure). Nominal weight of roof tile fittings