Sapwood - The younger, softer living or physiologically active outer portion of wood that is more permeable, less durable and usually lighter in color than the heartwood.
A feature of the cut end of most trees is a ring of pale wood - sapwood - beneath the bark. The centre is a darker colour and is known as heartwood. Water and minerals travel up the tree through the sapwood which contains living cells.
BARK BORER - A generally harmless form of woodworm found in bark and sapwood.
BATTENS - Thin timber strips, to which tiles and slates are fixed.
Blue Stain - A blue fungal discolouration in the sapwood of timber which does not reduce its strength
Blueing - Increasing the apparent whiteness of a white pigment or paint by adding a trace of blue ...
 See also: Door, Timber, Floor, Finish, Cement
  
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