Commercial Property Services
Commercial building exterior washing removes atmospheric deposits, algae, mold, bird droppings, and general grime that accumulate on all exterior surfaces. Cleaning frequency depends on surface type, exposure, and local environment.
Hot water pressure washing is more effective than cold water for organic contamination (algae, mold, grease) and embedded grime. Temperature increases chemical reaction rates, improving cleaning efficacy with less pressure and chemical use.
Industry Best Practices
Soft washing — using lower pressure with appropriate cleaning solutions — is appropriate for surfaces damaged by high pressure: EIFS, older brick, painted surfaces, and some stone types. The chemistry does the work, not the pressure.
Brick and masonry cleaning requires care with chemical selection. Inappropriate cleaning agents can damage mortar, etch stone, or leave efflorescence residue. Qualified contractors test on inconspicuous areas before full application.
How D&D Commercial Services Can Help
Roof washing removes algae and moss that damage roofing materials. Black streaks on asphalt shingles (Gloeocapsa magma) and moss on flat roofs both degrade the roofing surface. Professional treatment includes preventive treatment after cleaning.
Surface drying time before other work matters. Paint, caulking, and sealant applications should not proceed on surfaces that haven't fully dried. Schedule washing with downstream work timelines in mind.
Annual exterior washing is a minimum for most commercial properties. High-traffic, food service, or highway-adjacent properties benefit from twice-annual cleaning. The cost is modest relative to the impression improvement and surface protection benefits.