Fight Saltpeter on Your Walls in Four Very Effective Steps

Saltpeter, or efflorescence, is a common problem in damp walls where water carries salts to the surface. It not only looks unsightly but can also damage your paint and plaster if left untreated. Here’s how to effectively remove it and prevent it from coming back.

Step 1: Clean the Surface

Scrape off loose saltpeter using a stiff brush or scraper.

Avoid washing with excessive water, as this can dissolve the salts deeper into the wall.

For stubborn deposits, wipe with a dry cloth or vacuum with a brush attachment.

Step 2: Neutralize the Salts