Sandstone Cleaning

What This Service Involves

Sandstone is soft and easily worn, so high pressure strips its surface grain and shortens its life. In the damp Northwest, sandstone soaks up moisture and hosts moss and algae deep in its pores. We rely on gentle chemistry and minimal pressure to draw that growth out without eroding the stone. Careful rinsing prevents the surface from becoming waterlogged and flaking.

Benefits

Prevents surface grain loss on soft sandstone; Draws moss and algae out of the porous surface; Uses minimal pressure to protect the friable stone; Avoids waterlogging that leads to flaking; Preserves the character and longevity of the stone

Our Process

1) Test a discreet area for surface stability; 2) Apply a gentle cleaning solution to the stone; 3) Dwell to loosen embedded organic growth; 4) Rinse lightly to avoid oversaturation

What Affects the Cost

Sandstone area and porosity; Softness and current condition of the stone; Depth of moss and algae penetration; Access to the feature; Added care to prevent oversaturation

Best Time of Year

A dry summer window is important so the porous stone can shed moisture and avoid the flaking that oversaturation causes.