Houston's subtropical climate produces year-round humidity that drives rapid mildew and algae growth on concrete, wood, and brick surfaces. Properties in Montrose and the Heights often feature older brick and wood siding that requires lower pressure settings and surface-specific detergents to avoid etching or splintering. We adjust nozzle angles and dwell times based on the age of the home and the orientation of sun-exposed walls that bake in summer heat.
In River Oaks and Midtown, larger lots with mature landscaping mean we route water runoff away from live oaks and irrigation lines while containing overspray near sidewalks. Harris County soil is heavy clay that holds moisture, so we schedule work after at least two dry days to prevent streaking on freshly cleaned surfaces. Equipment is calibrated daily for local water hardness that can leave mineral spots if rinsing is incomplete.
Downtown commercial facades near Minute Maid Park see heavy pollen and vehicle exhaust deposits that bond differently than residential grime. We use eco-friendly surfactants that break down these films without harming nearby plantings or storm drains. Post-wash inspections check for missed seams around windows and doors where humid air reintroduces mildew within weeks if not fully removed.
Technician insight
In Houston the thing that catches most people out with pressure washing is how fast mildew returns on north-facing walls once the subtropical humidity kicks in after a mild winter. Homes in the Heights with 1940s brick often have soft mortar that blows out if you run full pressure, so we always drop to 1500 PSI and test first.
Montrose Bungalow Mildew Removal
North side of a 1950s bungalow showed heavy black streaking after summer rains. We found the algae had penetrated the old paint film. Lower-pressure washing with a mild detergent lifted the growth without damaging the brick, and a final rinse left the surface clean for three months before any regrowth appeared.
Pressure Washing Services We Offer
✓Driveway and Walkway Cleaning
Removes black algae streaks common on Houston concrete after humid summers, restoring traction without etching older slabs found in the Heights.
✓Wood Deck and Fence Washing
Applies controlled pressure and brighteners to cedar and pine decks that warp faster in Montrose and River Oaks due to repeated moisture cycles.
✓House Siding and Soffit Cleaning
Clears mildew from vinyl, brick, and fiber cement on two-story homes in Midtown where shade from neighboring buildings slows natural drying.
✓Commercial Parking Lot Washing
Targets oil and tire marks on asphalt lots near Downtown and Minute Maid Park using hot water to lift embedded grime before it stains.
✓Patio and Pool Deck Restoration
Treats pavers and stamped concrete around pools in Sugar Land and Pearland where standing water and pollen create slippery biofilm layers.
Pressure Washing Cost in Houston, TX
| Service | Typical Range | What Affects It |
|---|---|---|
| Residential Driveway Cleaning | $250–$450 | Higher end when older concrete in the Heights needs lower pressure and extra passes. |
| Deck And Fence Washing | $300–$600 | Varies with wood age and amount of mildew buildup common after humid summers. |
| House Siding Cleaning | $400–$750 | Two-story homes in Midtown or River Oaks increase labor due to ladder work and reach. |
| Commercial Lot Washing | $600–$1200 | Depends on square footage and severity of oil stains near Downtown properties. |
Ranges are typical for Houston, TX and confirmed with an exact written quote before any work starts.
How it works
- 1
Site Evaluation
Walk the property noting surface types, sun exposure, and proximity to landscaping in neighborhoods like Montrose or Katy.
- 2
Surface Preparation
Clear loose debris, protect plants with tarps, and test water pressure on an inconspicuous area.
- 3
Detergent Application
Apply mildew-specific solution and allow dwell time adjusted for current humidity levels.
- 4
Pressure Washing
Work in sections using appropriate PSI and nozzles for each material, moving with the slope of the lot.
- 5
Final Rinse And Inspection
Rinse thoroughly and check for streaks or missed areas before equipment is packed.
Pricing
Cost is driven by square footage, surface condition after months of Houston humidity, access around mature trees, and whether multiple stories or commercial lots require extra containment.