Dry Rot

The true dry rot SERPULA LACRYMANS is an incredibly versatile, pernicious and adaptable fungus which, given suitable conditions, will in a remarkably short period, destroy structural timbers and other matter containing cellulose within a building.

Dry Rot is a misleading name as the fungus will only occur in damp situations where timber has a moisture content of between 20% and 40%.
Indication of Dry Rot

Causes of Dry Rot

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The spores of Serpula Lacrymans are present in the air and become deposited onto timber.  These spores can remain dormant over long periods until, given the correct conditions, the germinate and form mycelium which usually looks like cotton wool.

The first indications of an attack is often the appearance of open cracks in painted joinery such as skirting boards, wall panelling or door frames.  The timber shrinks back and both horizontal and vertical cracks appear on the surface.  Usually a white rubbery cushion will develop along the edges of the timber, this being the beginning of a sporophore or fruiting body which bears the spores.

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