Chesapeake Bay Mildew
The humidity from the Chesapeake Bay is heavy. It creates the perfect environment for "green slime."
Algae and mildew cover the stones in weeks, not years. It fills the engraving so you can't read the name. It also makes the stone slippery. Pressure washing drives the spores deeper into the stone. It grows back faster. We use biological cleaners for professional headstone cleaning services. We kill the root system of the mildew. It dies, turns brown, and rinses away with the rain.
Marble "Sugaring"
Maryland is famous for Beaver Dam marble. Many older headstones are made of it. It is beautiful but soft. Acid rain eats the binder holding the stone crystals together.
The surface turns rough and sandy. If you rub it, white grains fall off. We call this "sugaring." If you scrub this, you will erase the inscription. We treat this gently. For tombstone repair and restoration, we apply a stone consolidant. It soaks in and hardens the loose surface. It stops the shedding and saves the history.
Waterfowl Acid Burns
Near the water, seagulls and geese are a problem. They leave droppings on the markers constantly.
Bird droppings are highly acidic. On polished granite, they etch the finish. They leave a dull, rough spot that never looks shiny again. You have to remove them fast. We use specialized neutralizers for cleaning stone gravestones. We break down the acidity safely. We clean the stone without scratching the compromised polish.
Tidal Soil Washout
On the Eastern Shore, the water table is high. King tides and storms push water into the cemeteries.
The sandy soil washes out from under the concrete foundations. We find monuments tipping forward because the ground just left. Shoveling sand back under isn't a fix; the next tide takes it. During cemetery plot maintenance, we pack the void with heavy crushed stone. Water flows through the stone without moving it. The monument stays level.
Red Clay Staining
West of the Fall Line, the soil turns to red clay. Rain splashes this red mud onto the base of the stones.
The stone sucks up the iron-rich water. It dries into a rusty orange band. Regular soap won't touch it. Bleach makes it permanent by locking the iron into the pores. We use iron-specific surfactants for grave site cleaning services. We lift the iron chemically. The red stain washes away, and the stone looks white again.
Salt Air Spalling
Salt air attacks porous stone and brick. The damp air carries salt into the pores of the marker.
When it dries, salt crystals form inside. They push the stone face outward until it pops off. We call this spalling. You can't wash the salt out with a hose. We use a drawing poultice. We pull the salt out of the stone to stop the internal pressure.
Lichen Infestation
In the rural counties, we see heavy lichen growth. It looks like crusty paint spots on the granite.
Lichen isn't just on the surface. It digs roots into the mineral grain to eat the rock. Scraping it dry pulls up divots of stone. We use a soaking agent to kill the organism. It releases its grip and washes off without damaging the stone face.