This standard provides a code of practice for the selection, use, and application of different types of hardboards. It covers guidelines on handling, storage, conditioning, jointing, fixing, and finishing for various end-uses like furniture, panelling, and partitions to ensure satisfactory performance.
Selection and Use of Various Types of Lignocellulosic Panel Products - Code of Practice, Part 2: Hardboards
Quick Reference Values
Minimum conditioning period before use48 hours
Recommended expansion gap2.5 mm per metre of board length/width
Maximum nailing spacing at edges100 mm
Maximum nailing spacing at intermediate supports200 mm
Minimum nailing distance from edge10 mm
Maximum bearer spacing for storage600 mm
Practical Notes
Crucially, hardboards must be conditioned on-site for at least 48 hours to match the ambient moisture level before installation to prevent future warping or buckling.
Always provide an expansion gap of approx. 2.5 mm per metre at joints and around the perimeter of panels to accommodate dimensional changes with humidity.
For areas with high humidity (kitchens, bathrooms) or where higher strength is needed, specify 'Tempered Hardboard' as per Table 1.