How to Protect Brick Walls from Moisture

To prevent moisture in your space, it’s essential to treat the exterior walls with a solution made from 1 kg of dry soap and 9 liters of water. Cut the soap into small pieces, soak it, and then boil it without stirring to avoid creating foam. This soapy solution should be applied to the exterior walls, allowing them to dry for a full day. After that, cover the walls with a hot solution of alum (300 g of alum in 9 liters of water).