Building defects database - Dry rot

Record details

Cuboidal cracking to skirting - the classic work of Serpula lacrymans (dry rot). Watch for other symptoms, such as the thick conductor strands behind the plaster. Surprisingly, at this advanced stage of the outbreak, moisture meter readings in the timber may not be high.
Dry rot Serpula lacrymans fruiting body to a skirting board.
Typical cuboidal cracking caused by dry rot (Serpula lacrymans) can be discerned on the upper sections of these boards, especially the second one from the right. In time this would become more obvious.
Pancake-shaped dry rot (Serpula lacrymans) fruiting bodies on a ceiling. Also note salt efflorescence to bricks due to moisture ingress. Fruiting bodies are very delicate and require almost perfect conditions of darkness, stillness and dampness to achieve this classical appearance. Their sensitivity means that, while still distinctive, they are usually they less well-formed, see variations in other photographs under this topic. The appearance of a fruiting body means that an outbreak is already well-established.
Dry rot fruiting bodies at ceiling level.
Water ingress and dry rot fruiting bodies.
Characteristic pancake shape dry rot fruiting bodies.
Extensive dry rot Serpula lacrymans strands and mycelium on brickwork. Such growth could only have developed in conditions of complete stillness.
Extensive growth of dry rot Serpula lacrymans strands and mycelium.
Extensive dry rot Serpula lacrymans mycelium, fruiting bodies.
Dry rot fruiting bodies.