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2011K1

wood

QuestionAnswer
The term used for cutting in a timber repair piece at 45 degrees Splicing
This fungus does most damage to softwoods but also attacks hardwoods. If left undetected or untreated it can destroy much of the timber in a building. Infected timber has a dry, crumbly appearance. Dry rot
The conditions where this rot is found are usually wet rather than damp (Between 30% and 50% moisture content. If the source of wetness is found, this rot can be halted. The timber often decays internally. wet rot
The larvae of this beetle bores through the wood. After about three years, the larvae forms a chamber near the surface, where it changes into an adult beetle. In the summer, the beetle bites its way out to the surface, forming a flight hole. Furniture Beetle
This wood-boring insect is related to the Common Furniture Beetle, but is much larger, with a flight hole of about 3 mm in diameter, usually found in decaying oak. While generally attacking hardwoods only, this wood-boring insect has been known to feed on Death Watch Beetle
This beetle gets its name from the way it can reduce timber to a fine powder. These beetles generally attack timber with a high moisture content. As with all other beetles, the female lays eggs and the larvae do the damage. Powder Post Beetle
This wood-destroying insect attacks seasoned softwoods, laying its eggs in the cracks and crevices of wood. In Great Britain, this insect is found mainly in Surrey and Hampshire. House Longhorn Beetle
This is a wood-boring insect similar in appearance and size to the Common Furniture Beetle. It differs in that it will only attack timber that is already decayed by wood-rotting fungi. There are over 50,000 species of this insect, all of which have long s Wood-boring Weevil
These insects are multi-coloured, blue or black, with wings of matching colour. They are between 2 and 5 cm long. The mature insect lays its eggs in forest trees that are either damaged or weak. It can take up to five years for adult insects to emerge, so Wood wasp
This paint is applied to new bare timber which requires a paint finish. It has good penetrating properties and provides a strong cohesive bond between the undercoat and the surface. Primer
This solution is applied to knots in bare softwood which can be full of resin and prevents the knot from ‘bleeding’ through the finished paint surface. Knotting
The sanding down of the surface to remove any raised fibres resulting from an initial coat of varnish, stain or paint De knibbling
A lint free cloth previously coated in shellac. It is used to remove fine dust from the surface before applying a coat of paint. Tack rag
A sheet used to cover and protect furniture during painting works. Dust sheet
This chemical based solution is used to clean down paintwork, remove dirt, grease and to flatten the old gloss finish. The dry powder looks like table sugar, which gives it its name. Sugar soap
This harmful ingredient was present in many paints used before the 1960s. It was added to speed drying and increase durability Lead
Immersing the timber in a suitably sized vessel containing preservative for an extended period (Up to two weeks) usually heating the preservative to aid the evacuation of air pockets Steeping
These preservatives are derived from coal and are very effective and relatively cheap. However, they give off a very strong odour which may contaminate other materials. Creosote is the most common type of this preservative. Tar Oils
These preservatives are mainly solutions of copper, zinc, mercury or chrome. Water is used to carry the chemical into the timber and is then allowed to evaporate, leaving the chemical in the timber. They are very effective against fungi and insects. Water Borne
These preservatives are the most effective, but also the most costly of the preservatives. They have excellent penetrating qualities and dry out rapidly. Many of this type are proprietary brands such as those manufactured by Cuprinol™. Organic Solvents
The Moisture content level considered to be the ‘Dry rot’ safety line 20%
Created by: Construction