Stone Patio Cleaning

What This Service Involves

Natural stone patios add character to Washington yards but hold onto the black algae film our shaded, wet climate produces. We identify the stone and use a gentle, dwell-led wash that clears the growth without pitting or dulling the surface. High pressure can flake softer sedimentary stone, so we rely on chemistry and careful rinsing instead. The patio returns to its true, varied stone color with safe footing restored.

Benefits

Lifts black algae without etching the stone; Preserves the stone's natural color and texture; Keeps footing safe on a shaded patio; Protects softer stone from pressure damage

Our Process

1) Identify the stone and test an inconspicuous area; 2) Apply a stone-safe cleaner and monitor dwell time; 3) Rinse gently along the stone grain; 4) Spot-treat any lingering shaded staining

What Affects the Cost

Type and porosity of the patio stone; Overall patio area and layout; Degree of algae and lichen coverage; Hand-detailing for delicate stone; Optional sealing after cleaning

Best Time of Year

Stone patios clean best in warm, dry summer weeks that let porous stone dry evenly.