Pressure Washing FAQ

Katy pressure washing costs typically range from $150–$350 for driveway cleaning, $250–$500 for house washing, and $300–$600 for full-property service including driveway, house, and fence. Commercial pressure washing is priced per square foot at $0.10–$0.35 depending on surface type and soil level. Roof soft washing runs $300–$600 depending on roof size and algae coverage. We provide free on-site estimates before any work begins.

Pressure washing uses high-pressure water (1,500–3,500 PSI) to blast away dirt and grime through mechanical force — ideal for concrete, brick, and durable hardscaping. Soft washing uses low pressure (under 500 PSI) paired with cleaning solutions that kill biological growth at the source — algae, mold, mildew, and bacteria. Soft washing is required for vinyl siding, wood, and asphalt roofs where high pressure would cause damage. For most Katy homes, we use soft washing on all vertical surfaces and targeted pressure washing on driveways and concrete.

Most Katy homes benefit from annual pressure washing, though homes with significant shade from large trees or those in lower-lying areas may need service every 6-9 months. Katy's 52+ inches of annual rainfall and high humidity (75%+ average) accelerate biological growth compared to drier climates — what takes 2-3 years to develop in West Texas develops in 8-12 months here. Post-hurricane seasons often warrant an additional cleaning due to elevated organic debris and mold spore deposits.

Yes. The black streaks on Katy roofs are Gloeocapsa magma bacteria — not just dirt. This bacteria feeds on the limestone filler in asphalt shingles and spreads via wind and rain. It requires soft washing with sodium hypochlorite solution, not pressure washing (high pressure damages shingles and voids most manufacturer warranties). ARMA (Asphalt Roofing Manufacturers Association) specifically recommends soft washing as the only acceptable cleaning method. Our treatment kills the bacteria and typically keeps roofs clean for 2-3 years.

Stamped concrete can be damaged by improper pressure washing — too high a PSI erodes the surface texture and can strip sealant. We calibrate equipment settings specifically for stamped concrete: lower PSI (typically 1,200–1,500), wider fan tip, and careful technique around engraved borders. We also recommend resealing stamped concrete after cleaning to restore its protective coating and appearance. If you have a stamped concrete driveway in Cinco Ranch or Seven Meadows, let us know during your estimate so we can plan accordingly.

Not necessarily. For exterior pressure washing, we typically need access to an outdoor water spigot and for you to ensure the area is cleared of vehicles, patio furniture, and children's equipment. Many Katy homeowners leave us a note with access instructions and return to a cleaned property. If we're washing areas near windows or doors, we'll notify you in advance so you can make appropriate arrangements. We always walk the property with you after completion for your approval.

Yes. Both Harris County and Fort Bend County have stormwater management regulations that prohibit wash water containing cleaning chemicals from entering storm drains. We use environmentally appropriate cleaning agents and containment practices (berming, absorbent booms for chemical-heavy applications) that comply with local regulations. We've been operating in the Katy market for over a decade and understand the county-specific requirements that apply to residential and commercial properties on both sides of the county line.

Cinco Ranch HOA typically issues a compliance notice by mail or email with a specific violation (e.g., "algae growth on driveway" or "discolored home exterior") and a cure deadline, usually 30-60 days. If you've received a notice, contact us immediately — we can typically schedule service within 5-10 business days during normal season. We provide before/after photography documentation suitable for HOA compliance submissions. Don't wait until the last week before a deadline to call, as peak season (spring and fall) books quickly.

Spring (March-May) is the most popular season — removing winter grime and pollen coating before summer. Fall (September-November) is also excellent for removing organic buildup before the cooler months. We schedule summer sessions in the early morning hours (7-9 AM) to avoid the afternoon heat that accelerates surface drying and can cause cleaning solutions to dry too quickly. Winter pressure washing is possible on mild days and is often easier to schedule since demand drops. We operate year-round.

A typical full-property wash for a standard Katy home (2,000-2,500 sq ft house, two-car driveway, front sidewalk, and standard wood fence) takes 3-5 hours. Larger properties with extended fence lines, extensive hardscaping, or significant mold buildup will take longer. Roof soft washing adds 1-2 hours depending on roof size. We schedule most jobs as half-day appointments with a morning arrival window. Commercial projects are scoped individually based on square footage and soil conditions.

We can significantly reduce or eliminate most oil stains on Katy concrete driveways, depending on how old and deep the stain is. Fresh oil (less than 6 months) responds well to hot-water pressure washing with degreaser application. Older, deeply penetrated oil stains may require multiple treatments or specialty degreaser with extended dwell time. We'll assess your specific stains during the estimate and give you a realistic expectation — we won't promise complete removal on deeply set stains, but we can often improve appearance by 70-90%.

Yes. We service Katy's commercial corridor along I-10, the Katy Mills area, and the Energy Corridor with exterior building washing, parking lot cleaning, drive-through lane maintenance, and sidewalk cleaning. Commercial jobs are typically scheduled for early morning (5-7 AM) or late evening to minimize customer disruption. We work with property management companies on regular maintenance contracts and can provide insurance certificates required by property managers. Call us for a commercial quote — we'll do a site walk before pricing.

Stucco requires careful handling — it's a porous material that can absorb water and crack if subjected to high pressure or incorrect technique. We use soft washing (under 500 PSI) with appropriate cleaning solutions for stucco exteriors. This effectively removes algae, mold, and dirt without risking water intrusion behind the stucco or causing surface cracking. After cleaning, we recommend inspecting the stucco for hairline cracks that may have existed before cleaning and should be sealed to prevent future water intrusion.

With proper technique, pressure washing has minimal impact on healthy, established landscaping. We pre-wet surrounding plant beds before applying any cleaning solutions, and we use biodegradable cleaning agents that dilute quickly in soil. High-pressure water directed at delicate plants can cause mechanical damage, so we keep equipment pointed away from ornamental plantings. For properties with extensive flower beds adjacent to driveways or walkways, we'll discuss specific plant protection steps during the estimate.

The post-Harvey window that mattered most was the first 30-60 days after flood recession — when organic sediment and mold spores were freshest and most removable. However, Harvey contamination has proven persistent in Katy, and we continue to address Harvey-related mold and biological contamination years later. If your home was flooded in 2017 and you never had a professional exterior cleaning, that contamination has likely been cycling through rain events and continued to affect your surfaces. It's not too late to address it properly.

Our primary cleaning solutions are sodium hypochlorite-based (essentially a diluted bleach solution) for biological growth removal, paired with a biodegradable surfactant that helps the solution penetrate surfaces and rinse cleanly. Once fully rinsed, cleaned surfaces are safe for children and pets after they dry — typically 30-60 minutes on a sunny day. For customers with specific chemical sensitivities, we can discuss alternative treatment approaches. We never leave cleaning residue on surfaces, and our rinsing protocol is thorough.

Rapid re-growth of green algae on Katy concrete is typically driven by shade coverage, persistent moisture (from clay soil or drainage patterns), and airborne algae spore concentrations. If your driveway is under significant tree canopy or near a drainage detention area, expect shorter cycles between cleanings — potentially 6 months instead of 12. Applying a concrete sealant after cleaning significantly slows re-growth by reducing the surface porosity that algae anchors to. Ask us about our post-clean sealing service for persistently problematic driveways.

Yes. Pool decks and patio concrete require careful technique — pool coping and cool-deck surfaces use different materials than standard driveway concrete and can't handle the same PSI. We've cleaned hundreds of Katy pool decks and understand the specific techniques for travertine pavers, exposed aggregate, cool-deck coating, and standard concrete coping. We also verify that cleaning solutions won't affect pool chemistry if any runoff enters the water. Most Katy pool decks clean up well and we can also address the surrounding fence and gate hardware.

Cedar fencing responds well to pressure washing when done correctly. We use lower PSI settings (800-1,200) and move the wand with the grain of the wood to avoid raising the grain or causing splintering. Hot-weather cleaning of cedar requires faster movement to prevent over-drying on contact. After cleaning, we recommend a cedar oil treatment or sealant to restore the wood's natural oils and slow weathering. Untreated cleaned cedar will gray more quickly than sealed cedar — worth the additional investment for long-term fence appearance.

Yes. Our annual service agreement includes two full-property washes per year (spring and fall), priority scheduling during peak periods, and a 10% discount versus single-visit pricing. Many Katy homeowners in HOA-governed communities find the predictable maintenance schedule keeps them consistently compliance-ready. For commercial properties, we offer monthly, quarterly, or semi-annual contracts depending on business type and foot traffic. Contact us to discuss a maintenance program tailored to your property.