Damp on walls is a water damage symptom which appears as an oily or damp spotting that penetrates your walls, with no other indication of water leakage or damage. Penetrating damp is typically moisture that gets access via weakened roof coverings or interior walls and gains access to the interior surface of the wall. Damp on walls is one of the leading causes for mildew and mold growth in residential buildings. Damp on walls is most commonly associated with roof leaks, ceiling and floor water damage, improper drying of building materials following roof replacement, improper drying of materials following construction, and issues with the HVAC system (heating, ventilation, air conditioning).
Damp Proofing Your Walls Is Important
There are many ways to remove damp problems today without having to replace or repair your walls. Damp proofing your walls will help prevent future moisture penetration into the core of the walls, and it is also an excellent method for controlling existing moisture levels in your walls. Damp proofing provides numerous benefits, such as reducing condensation on windows, doors, skylights, and ceilings; preventing or eliminating the growth of mildew and mold; and improving the structural integrity of the building by removing acoustic vibrations due to roof ventilation openings. Damp proofing prevents moisture entry from your roof and improves the energy efficiency of your home by reducing heat gain and reducing cooling losses.
Damp on walls can be eliminated with a simple wall coating which prevents moisture entry. Damp proofing your walls is not a job to tackle by yourself, but rather one that requires professional expertise due to the specialized nature of this situation. A qualified and experienced building contractor will do extensive research before making suggestions for an effective treatment. An economical solution is to use a water-resistant paint, which will prevent the formation of mold and mildew on walls while protecting them from the elements.