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Signs & Causes Of Wet Rot

What Is Wet Rot?

The higher the moisture content within timber the higher the chance of wet rot.

The most common type of wet rot decay is usually caused by Coniophora puteana, which is found in some form in most properties. Another fairly common fungus is Poria vaillantil, although there are many other less common fungi that may also occur.

While each of the different fungi has its own individual features, the overall appearance and treatment of wet rot is similar. Wetrot is usually confined to the damp area because the mycelium does not spread into walls.

Wet rot is not as destructive as dry rot, but it can and does cause structural damage.

What Are The Signs Of Wet Rot?

Wet Rot decay is usually first identified when floor timbers start to bounce or have movement.

Skirting boards affected show signs of cracking even through paint. The unpainted unprotected rear of a skirting board will be more vulnerable to wet rot decay.

How To Prevent Wet Rot?

To prevent wet rot it is advisable to ensure that all timber, including window and door frames, are well painted/protected from rain water.

Ensure that all gutters and downpipes are free from defects or leaks. Ensure that sub floor ventilation is adequate and unblocked as poor ventilation will contribute greatly to any timber decay problems.

Ensure any new timbers introduced to a building are isolated from masonry by the use of a physical membrane.

What Causes Wet Rot?

  • Unprotected timber in direct contact with moisture.
  • Wet rot can affect any unprotected timber and joinery so regular maintenance is very important.
  • Insufficient ventilation below suspended floors.
  • Possible leaks from pipes and domestic appliances.

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