Wet and Dry Rot

Fungal decay can affect buildings of all ages,if decay is discovered it should be identified and remedial action taken without delay.Fungal decay occurs in timber which becomes wet/damp overa long time, resulting in the attack by one of a number of wood-destroying fungi.

There are two forms of fungal decay, Brown rots and White rots.

Brown rots feed on the celluloseand hemi cellulose content of thewood cell structure, resulting in a cuboidal surface forming on the timbers.

White rots feed on the lignin, cellulose and hemi cellulose content of the cell structure, resulting in the timbers becoming stringy.

The most well known ones being referred to as Dry rot –Serpula lacrymans.Wet rot -Cellar fungus-Coniophora puteana / Mine fungus Poria vaillantii.There are many others but these are less common and are normally confused with one of the above.

Dry fruiting body

Dry rot

Dry rot Serpulala crymansis considered the most serious form of fungal decay to affect a building. It can spread unseen behind, over and through masonry to infect and affect the structural integrity of largersections of timber within a building. To effectively eradicate dry rot requires a specialist CSRT qualified timber surveyor, who understand the nature of the fungus, the growth patterns and environmental requirements for the fungus to become established.

Wet rot affected floor joists

Wet Rot

There are hundreds of wet rot species, the most common found in buildings being cellar fungus Coniophera puteanait has the potential to cause substantial structural damage to timbers but tends to be more localised to the moisture source than dry rot.

Timbers affected by wet rot have a high moisture content, which is normally being from a building defect, allowing a readily available source of moisture ie plumbing defect, or timbers being in direct contact with damp masonry or in an unventilated void, resulting in high levels of condensation forming.

Our surveyors and technicians are highly qualified and experienced in identifying dry and wet rot fungi growth.

Fungal decay only occurs in the wood with a moisture content of 20%+ Finding the source of dampness, eliminating the ingress of moisture and promoting drying is most important and always necessary.

Outbreaks of fungal decay always start in a similar way, the mature fruiting bodies of wood destroying fungi that develop during an attack and produce millions of microscopic spores, which are widely dispersed by air currents. Where they fall on untreated damp wood and germinate by pushing out a hollow tube called hypha into the damp timber, which grows and branches to develop a mass of threads called mycelium.

The mycelium develops inside the timber and breaks down the wood for food, the wood may darken in colour and develop a Characteristic cracked appearance, some wet rots may result in bleaching of the wood (White rots) eventually, the wood loses its strength and in some situations,may become dangerously unsafe.

The main differences between dry rot and wet rot are the degree of development of mycelium on the wood surface and the ability of the fungus to spread into other timbers via adjacent masonry. It is important that the two types of decay are correctly identified, since they require different treatments.

Think you have a dry rot problem-book a professional survey today for peace of mind.

Patterns and providing specifications to correctly eradicate the infection.

All remedial works to eradicate dry rot are covered by a fully insurance backed guarantee.

Building and Property Wet Rot & Dry Rot Treatment services in Manchester/Salford –Stockport/Cheshire-Saddleworth-High peak-Derbyshire/Glossop.

Would you like to talk?

If you have any questions please call us on Oldham 0161 633 9860,
Wilmslow 01625 900 800
or contact us and we will be happy to answer any of your questions or make arrangements to undertaken an inspection.
(Inspection appointments refunds are subject to a Minimum 24hr notice)