Dampness mould musty odours in living rooms or wardrobes rotting timber floorboards convex of.
Sub floor ventilation is inadequate.
There is nowhere for the excess moisture to go so the damp rises up the walls.
When you see grass and other vegetation growing from inside the wall or soil building up it is a clear indication of an underlying problem with sub floor ventilation.
Sub floor ventilation under your home can be hindered if the area has become too small has been blocked by new concrete slabs inadequate amount of external vents or blocked external vents.
Due to the enclosed foundations with dwarf walls and solid internal walls it is usually difficult to access the subfloor area.
Insufficient subfloor ventilation can lead to higher moisture levels in the unprotected underside of flooring general dampness in the house and other problems such as cupping of the top surface of floorboards due to a lower moisture content on the upper surface than the lower surface of the boards.
This is because poor ventilation in the sub floor results allows humidity to build up.
Where there is inadequate air flow and therefore poor ventilation the air flow may need to be forced using a professional underfloor fan.
If ventilation is poor a quick inspection of the vents can sometimes reveal why.
The other main problem area we deal with is inadequate subfloor ventilation.
A sub floor is the structure and crawl space between the lowest floor and the ground.
Most older houses that have suspended wooden floors are the main buildings where we encounter ventilation problems.
Some buildings have very little subfloor ventilation.
Common signs of a lack of sub floor ventilation include.
Inadequate sub floor ventilation is a major cause of rising damp.
Even worse killing mould can be extremely difficult.
How sub floor ventilation systems work.
Unfortunately poor subfloor ventilation can also effect your health.
This in turn can cause structural and health problems for the home and it s occupants.
Mould is one of the most common allergy triggers for asthma.
If you enter a building and you smell a musty odour it may be because of a sub floor ventilation problem.
High moisture levels in these areas promote fungal decay and other timber pests such as termites.
You should instruct a timber treatment contractor to investigate the full extent and carry out the necessary work i m guessing the defects in question would be wood rot but what s the likely cost of getting the ventilation from inadequate to adequate.
Importance of under floor ventilation.
Signs of inadequate sub floor ventilation.
The most basic sub floor ventilation are vents built in when the house is constructed.
It also contributes to respiratory problems and illnesses.
