LockClad technical details
Natural clay – either Etruria Marl or Fireclay. Firing temperatures in excess of 1045ºC are employed to produce high levels of vitrification, frost resistance and durability.
Tiles have flexural strength >2kN and will withstand windloads likely to be encountered in the UK.
Frost resistant when tested over 100 freeze/thaw cycles. Unaffected by ultra violet light and atmospheric pollution. Tiles carry a 30-year durability and colour guarantee (details available on request).
Less than five per cent by mass.
Minimal. The liability to efflorescence is nil.
Class O (BS 476 and Approved Document of Building Regulations for Fire Safety).
LockClad façades are self-cleansing and require little additional maintenance.
Installation is undertaken by fully trained contractors.
LockClad and all components are
Natural terracotta, Slate,
Dark terracotta, Buff
Tile dimensional tolerances
Height: +/- 1mm
Length: +/- 1mm for lengths under 300mm
+/- 1.5mm for lengths over 300mm
Horizontal: 10mm (lapped and baffled)
Vertical: 2mm (open) or 8-10mm (baffled)
Secondary support structure
Horizontal aluminium extrusion – sigma rail. (special top and bottom sigma rails also available).
Manufactured to BS. 1471 Grade 6063 T6.
Capable of spans in excess of one metre (dependent on wind pressure and exposure calculations).
Supplied in six metre lengths (pre-cut to other lengths by arrangement).
Heights: (including 10mm joint) 185mm, 200mm, 210mm, 220mm, 225mm, 235mm, 250mm
Lengths: machined to any length
from 210mm to 400mm
Typically 44-46 kg/m2 (including sigma rail, locking clips and spacers).
Applicable standards and specifications
CWCT Standard for Walls with Ventilated Rainscreens National Building Specification – H92 Rainscreen LockClad Technical Manual.