(57) A cladding board (7, 13, 16, 17) comprises a side with a tongue (9, 23) and a side
with a groove (10) or cut-out portion (21) to facilitate the attachment of the cladding
board to another such cladding board; wherein said board incorporates a backing layer
(2, 8, 19) of primarily rigid foamed plastics material; and a further layer (3, 11,
14, 15, 18) located over said backing layer being primarily of an elastomer; said
groove or cut-out portion being of exposed rigid foamed plastics material without
any elastomer covering being provided in said groove or cut-out portion; wherein said
further layer (3, 11, 14, 15, 18) has greater inherent flexibility than said backing
layer (2, 8, 19).
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