How Do You Prevent Efflorescence on Buildings?

Efflorescence can be prevented by controlling moisture movement through building materials. This starts with proper design and construction practices, such as installing effective drainage systems, using damp-proof membranes, sealing joints, and protecting masonry from rain during construction. Choosing quality, low-alkali materials and storing them off the ground also helps reduce salt content. After construction, applying a breathable water-repellent sealant can reduce water ingress while still allowing internal moisture to escape. Ultimately, prevention hinges on managing water exposure, keeping surfaces dry and ensuring moisture doesn’t accumulate within or behind walls.