General requirements

12424 Wooden surfaces

All wooden surfaces shall be rubbed down smooth with fine abrasive, and dusted off. Sound knots, resinous streaks and bluish sapwood shall be given 2 coats of knotting which shall extend at least 25 mm around the affected area. Nails shall be punched well below the surface. After priming, defects such as open joints or nail holes shall be stopped with hard stopping, and surface imperfections faced up as necessary. All such repairs shall be primed before undercoating is applied.

Surface to be oiled shall be rubbed down to a smooth surface, filled as necessary, dusted off and oiled with a minimum of two coats of linseed oil or as approved by the Engineer applied with a flannel and well rubbing in. Filling shall be with an approved wood filler tinted to match the colour of the wood.
Surface to be varnished shall be rubbed down thoroughly and evenly with fine abrasive paper and filled as necessary. Filing shall be with approved wood filler, tinted to match the colour of the wood, rubbed down and dusted off. Varnish shall be applied in three coats, the first coat thinned with 25% of white spirit. When dry the first coat shall be lightly rubbed down with fine abrasive paper.
Surfaces to be treated with clear wood finish shall be rubbed down evenly with fine abrasive paper and filled as necessary. Filling shall be with approved wood filler tinted to match the colour of the wood, rubbed down and dusted off. Three coats of approved clear finish shall be applied, the first in the joiners shop where practicable, and two further coats immediately after fixing but before any deterioration of the first coat. The manufacturer's directions shall be adhered to in all respects including proportioning, mixing, temperature for application, and curing. Where directed, the finished work shall be matted down wet, rinsed, dried, and a high gloss produced with approved rubbing compound or matted to a satin finish.