Penetrating damp often occurs in areas where there is a continual flow of moisture that rarely gets a chance to dry out. Examples of this are broken down pipes or leaking guttering, continual leaking from overflow pipes, roofing felt decay, dislodged roofing tiles or brickwork & pointing in poor condition.
Penetrating damp can affect the timber in a property causing wet rot or dry rot to propagate.
Signs of penetrating damp are:
- Damage to plaster.
- Damp patches on walls that don't dry out.
- Black mould growth.
- Musty damp smell.
- Damp patches at high level.
A distinctive sign of penetrating damp is when it's raining very heavily, the damp patches on walls get noticeably larger.
To remedy penetrating damp issues it is first necessary to identify the source of water ingress, to prevent any further damage to the property. This could be something as simple as a blocked gutter or broken downpipe. After that, any damaged plaster needs to be removed and an inspection of the area is required to assertain if wet rot or dry rot have occured, if so then the appropriate treatment needs to be carried out to remedy this. Also any damaged timbers will need to be treated or replaced.