Stone & Masonry Cleaning and Sealing

Stone and masonry are porous. Moisture moves through them, and in our region's freeze-thaw climate that moisture causes staining, mildew and eventually damage. As it moves it can also carry mineral salts to the surface, which shows up as efflorescence, the chalky white haze that dulls the look of stonework.

Cleaning removes buildup, mildew and staining. Sealing afterward limits how much moisture gets in, which is one of the most effective ways to keep stone looking the way it should.

What we work on

Natural stone walls, walkways and veneer
Brick and block
Chimneys and facades
Fire pits and outdoor stonework
Efflorescence, mildew and staining

How we approach it

Identify the stone and what is on it
Different stone and different stains need different cleaning, and the wrong cleaner can mark the surface.
Clean
We use a method matched to the material and rinse it thoroughly.
Let it dry
Sealer goes on dry masonry.
Seal
A sealer limits moisture and helps protect against staining and efflorescence.

If efflorescence has already set in, see graffiti and stain removal. We specialize in removing it and renewing the original look as much as possible, then sealing to help protect the stone going forward. Read more in our guide to efflorescence on stone.