Timber Treatment

Dry rot and wet rot can affect buildings of all ages and if decay is discovered it should be identified and remedial action taken without delay. Fungal decay occurs in timber which becomes wet for some time and is the result of the attack by one of a number of wood-destroying fungi.

Dry rot is the most serious form of fungal decay in a building. It can spread onto and destroy much of the timber. Wet rot occurs more frequently, but is less serious; decay is typically confined to the area where timber has become and remains wet.

Fungal decay always arises because the wood has become wet. Finding the source of dampness and eliminating the ingress of moisture and promoting drying is always necessary.

Outbreaks of dry rot and wet rot start in similar ways. The fungi produce millions of microscopic spores and these are widely dispersed by air currents. If they fall on untreated damp wood they will germinate and grow by breaking down the wood for food. The timber may darken in colour and develop a characteristic cracked appearance. Some wet rots may result in bleaching of the wood; these are more common in doors and window frames. Eventually, the wood loses its strength and in some situations may become dangerously unsafe.