|Length (mm)||400 Under eaves||700 Main slates||600 Main slates||525 Main slates||330 Under ridge||600 Ridge unit|
|Width (mm)||500||450, 525, 600||400, 475, 550||350, 425, 500||300, 375, 450||n/a|
|Set Width (mm)||n/a||1575||1425||1275||1125||n/a|
|M2/pack||7.83||10.56||9.65||8.73||10.04||48 lin m|
Each slate is numbered and the slate number (see table above) indicates its size. The main slates (2-10) forming the bulk of the roof are supplied and laid to a doublelap in three lengths, reducing from eaves to ridge. There are three different widths in each length. Equal quantities from the full range of widths are supplied in each particular length. The length of rafter determines the number of courses in each slate length supplied. Ridge/hip units – Available in 600mm lengths. Ridge vent units – Available in 450mm lengths. Gas flue ridge units - Available in 450mm lengths. Nails and pegs – Hanging over batten: 40mm long x 4.5mm or 5mm dia. Aluminium tile pegs. Nailing through batten: 40/45mm long x 3.35 dia. Clout head nails.