Composite Boards ~ are factory manufactured, performed sheets
with a wide range of properties and applications. The most
common size is 2440 ¾ 1220 mm or 2400 ¾ 1200 mm in
thicknesses from 3 to 50 mm.
- Plywood (BS EN 636) † produced in a range of laminated
thicknesses from 3 to 25 mm, with the grain of each layer normally
at right angles to that adjacent. 3,7,9 or 11 plies make up the
overall thickness and inner layers may have lower strength and
different dimensions to those in the outer layers. Adhesives vary
considerably from natural vegetable and animal glues to
synthetics such as urea, melamine, phenol and resorcinol
formaldehydes. Quality of laminates and type of adhesive
determine application. Surface finishes include plastics, decorative
hardwood veneers, metals, rubber and mineral aggregates. - Block and Stripboards (BS EN 12871) † range from 12 to
43 mm thickness, made up from a solid core of glued
softwood strips with a surface enhancing veneer. Appropriate
for dense panelling and doors.
Battenboard † strips over 30 mm wide (unsuitable for joinery).
Blockboard † strips up to 25 mm wide.
Laminboard † strips up to 7 mm wide. - Compressed Strawboard (BS 4046) † produced by compacting
straw under heat and pressure, and edge binding with paper.
Used as panels with direct decoration or as partitioning with
framed support. Also, for insulated roof decking with 58 mm
slabs spanning 600 mm joist spacing.
Composite Boarding and Sheet Materials