Prevention is better than cure, and this is definitely the case when it comes to moldy walls. Air out your home regularly to let damp air out and avoid mustiness. For extra protection from the elements, opt for silicone-based paints for indoor walls and a waterproof coating on exterior walls. Consult interior designers in Chennai to find the best option for your home. Loose or blocked pipes and drains are another cause of water damage, along with cracked walls. Make sure to check these regularly and cover any cracks with sealant, putty or grout before the rain rolls in.
If you already see wet patches on the walls, all hope is not lost. Ceiling, wall, or corner patches indicate a drainage block in the area, and patches starting from the floor indicate faulty plumbing below. If your wall is simply damp with no discernable source, excess moisture build-up is your culprit and ventilation is the answer.