Building foundations typically have a Damp Proof Course, also known as DPC. A DPC is a simple barrier between the foundation above the ground level and the main wall of the house. The material should stop any possibility of damp rising through this barrier.
Rising damp problems often occur as a result of not having a DPC installed or having a DPC that is faulty.
Incorrect or Poor Quality DPC
Rising damp problems will occur when DPC can no longer do its job of stopping moisture penetration. Incorrect, poor quality or damaged DPC will need to be corrected. This often leads to the installation of a subfloor ventilation system.
Faulty Water Drainage System
Poor drainage system and damaged storm water pipes, gutters and downpipes will cause water to redirect underneath your house. This will cause dampness issues inside your home.
Inadequate Sub-Floor Ventilation
A lack of sub-floor ventilation results in a buildup of humidity, which means only minimal evaporation from the soil and base walls occur. Adequate sub-floor ventilation and circulation of air can prevent the occurrence of moisture underneath the house.
Debris in the sub-floor can also obstruct the flow of ventilation and may contribute to dampness. Cleanliness should be maintained in all areas of the home at all time to avoid buildup of debris.