Dry Rot is a wood destroying fungus causing the most serious timber decay in buildings, often resulting in extensive damage. It has the ability to grow through brickwork, mortar and behind plaster. It can be difficult to detect in early stages as it may develop out of sight. Some indications of possible dry rot may be the softening of wood in some areas, shrinkage and distortion and a distinctive “mushroom” odour.
Wet Rot is a general term applied to many species of fungus, all of which will cause timber decay. They can be divided into two groups; brown and white rots.
They vary in severity of damage but none possesses the ability to pass through inert material and spread to other damp timbers like Dry Rot. Thus they are found in localised areas where they are exposed to considerable amounts of water ingress. Externally exposed timbers, timbers in contact with wet soil or masonry, or timbers subject to a damp atmosphere can all suffer from Wet Rot.