Wet Rot-Dry rot-Mould

High Moisture
damp on ceiling

Dampness and fungi (mould) is common in buildings structures with high moisture and poor air circulation and ventilation.
People spend a lot of time indoors, at home in offices and schools, the quality of the air we breathe in those buildings is important to our health and well being.
Indoor air pollution from dampness and mould can have a profound effect on human health. 

Examples of wood rot and damage that can be caused
without regular in expensive roof checks by a proffessional.

Wet rot in the roof area from rain saturation

wet root in roof

This roof shows serious signs of water damage to roof timbers at the eaves and also the sarking felt has eroded.
This can go unnoticed to the homeowner for years, as the constant water ingress is contained in the over hang of the roof and eventually rots the rafters.

overhanging eaves on house
damage roof rafters
wood decay in roof
new roof felt
  1. 1 This involved the removal of all the tiles from the roof to be stacked for reuse.
  2. 2 Removal of all sarking felt and battens.
  3. 3 The replacement of damaged eaves rafters.
  4. 4 New felt and battens fitted and tiles relaid.

Coniopionphora cerebella: most commonly known as Wet rot

Wet rot is another type of wood destroying fungus mainly found in wet conditions such as:

  1. Basements
  2. Neglected external joinery, Shop fronts etc
  3. Ends of roof rafters, Barge boards and Fascia Boards
  4. Battens under Cracked tiles on a roof,
  5. Areas under constant water saturation.

Wet rot does not normally require such drastic treatment as dry rot, wet rot is confined to the area under constant water saturation. 

All that is required to eradicate wet rot is to stop the water ingress and remove the damaged Materials.

Were extensive rot to structural timbers has occurred it will involve replacing these timbers.


Merulius Lacrymans.. Most commonly known as Dry Rot

Dry is rot found in damp conditions attacks the cellulose mainly found in sap wood and causes the affected timber to:

  1. Loose it strength and weight                             
  2. Develop cracks ,across and with the grain
  3. Becomes so dry that it can easily crumble in the hand


If dry rot is allowed to fester and go untreated it can compromise the strength of structural timbers in buildings. (ie. floor Joists, rafters, wall plates, purlins, Partition walls and Lintels.

It can also damage bricks and plastering in its search for fresh timber to attack.

Dry rot can be an expensive problem to treat this involves timber replacement and sterilization of unafected materials, timber and masonry .

Preventative roof and building maintenance can greatly reduce the formation of a fungal attack on wood.


Annual roof maintenance checks can save you thousands of euro
make sure and use a qualified and trained roofer who follows building regulations and standards.

Tel: 087-9533753 
Covering Leinster and munster