Pressure Washing
Learn more about pressure-washing, including different techniques, maintenance tips, and the best brands.

A Homeowner's Guide to Professional Pressure Washing

Pressure washing is a fast and effective cleaning method for all types of exterior surfaces. Powerful jets of water spray at high pressure to remove dirt, mold, mildew, grime, and stains.


What is Pressure Washing?

Pressure washing uses specialized equipment to spray water at pressures between 1,500 and 4,000 pounds per square inch (PSI). This high-powered spray easily cleans surfaces and removes stubborn dirt and stains.

PSI is a measure of the pressure or force applied to a surface by the washer. Most consumer washers generate less than 3,000 PSI. Professionals use industrial washers that exceed 3,000 PSI for superior cleaning ability.

Pressure washing effectively cleans:

  • House siding
  • Decks
  • Patios
  • Driveways
  • Sidewalks
  • Roofs
  • Gutters
  • Fences
  • Outdoor Furniture

It's much faster, more efficient, and more thorough than scrubbing manually. The intense water pressure reaches deep crevices brushes can't touch. Pressure washing restores exteriors and can boost curb appeal.


What Pressure Washer Equipment Used by Professionals?

Professionals use industrial hot and cold water pressure washers designed for efficiency and results. The most productive option is a truck-mounted pressure washer system. Truck-mounted systems connect to the truck's large water tank and generator for mobility around job sites.

These use an electric motor or gas engine to pump water up to 4,000 PSI. They clean most moderately to heavily soiled surfaces. Cold washers are a good option for general home cleaning projects.

These heat water above 200°F and pump it at 1,500 to 4,000 PSI. This combination delivers superior cleaning ability. Hot water units dissolve and remove the toughest oil, grease, grime, and mud buildup. They excel at cleaning severely dirty concrete, driveways, and commercial kitchen exhausts.

pressure washing the side of a home
Adobe - Royalty Free

For pros, truck-mounted washers provide maximum productivity. Their long hoses (up to 300 feet) provide easy access to all areas of a property. Large truck-mounted tanks hold 100-500+ gallons of water.

For single-story homes, portable pressure washer-wheeled units offer flexibility to move around the property with ease. However, their water supply is limited compared to truck-mounted systems.


How To Hire a Professional Pressure Washing Company

When it comes to hiring a professional pressure washing company, it is important to do your research to find a qualified, reputable provider. Start by verifying that prospective companies are properly licensed and insured. Licensing requirements vary by state and city. General contractor licenses indicate advanced training and experience.

Ask potential pressure washing companies key questions like:

Look for companies using hot water systems for superior cleaning capability.

This protects you in case the company accidentally causes damage to your property.

The best companies will guarantee their service quality.

Take time to thoroughly research companies.

worker washing the roof with pressurized water
Adobe - Royalty Free

How Much Does Pressure Washing a Home Exterior Cost?

Pressure washing costs depend on factors like:

  • The overall size of the area needs cleaning
  • Types of surfaces being cleaned, like brick vs. wood
  • Amount of deeply ingrained grime or paint buildup
  • Your geographic location

Here are typical price ranges for common residential pressure washing projects:

ProjectCost
House Siding $150 - $350
Driveway$80 - $200
Patio$100 - $250
Wood Deck$100 - $250
Ranch-style Roof$200 - $300

Trying DIY may seem cheaper initially, but equipment rental ($50 to $300+) and the learning curve add hidden costs. Professionals already have the right commercial equipment, skills, and experience to deliver results safely.


Pressure Washing Safety Tips

Pressure washing is potentially dangerous without proper training. The powerful high-pressure spray can easily damage surfaces, break glass, and cause injury.

Reputable companies follow key safety protocols like:

  • Wearing protective gear: goggles, gloves, hard hats, and close-toed shoes
  • Keeping the wand moving over surfaces
  • Carefully regulating the wand angle and distance from surfaces
  • Pre-wetting surfaces before washing
  • Blocking off landscaping areas and covering windows
  • Checking for leaks in hoses/connections
  • Using non-toxic, eco-friendly detergents and solutions
  • Closely following manufacturer safety guidelines
Professional pressure washing a driveway
Adobe - Royalty Free

If hiring help, ensure they fully understand proper pressure washer operation and safety. Carefully supervise to prevent accidents and property damage. For small projects, consider DIY pressure washing.


Learn More About Pressure Washing


The Bottom Line

Pressure washing is the most effective exterior cleaning method available. Professionals have the industrial equipment, skills, and experience to deliver quality results safely.

For severely dirty surfaces or fast project turnaround, hot water washing by a licensed pro is a wise investment. Take time to thoroughly vet providers. For quick DIY cleanups, rent smaller consumer-grade washers.


FAQs About Pressure Washing

Does pressure washing damage exterior surfaces?

In inexperienced hands, pressure washing can damage wood, brick, and other surfaces. Professionals know the proper PSI, angle, distance, and solutions to clean thoroughly without damage.


How often should you pressure wash a house?

Most homes only need pressure washing every 3 to 5 years to maintain the exterior. More frequent washing usually isn’t required. Consider an annual light pressure wash for upkeep.


Should you pressure wash before painting?

Yes, always pressure wash before painting outdoor surfaces. Washing first removes chalking, dirt, mildew stains, and grime so new paint adheres better. Allow 2-3 days to dry after washing before painting.


What surfaces should you avoid pressure washing?

Avoid power washing fragile surfaces like asbestos siding, intricate brickwork, and certain wood sidings. Gentler cleaning methods are required. Professionals know how to properly clean delicate surfaces.


Is pressure washing roofs safe for professionals?

Yes, experienced professionals can safely pressure wash roofs using proper harnesses, anchors and the right PSI and technique. It’s a recommended roof cleaning method.


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