Dear Angie: What kind of companies can I hire to pressure-wash a home and a wood deck? Are there any risks with power washing? — Alan M., River Vale, N.J.
Answer: Pressure-washing is great for removing dirt, stains and mold from the exterior of homes, as well as wood decks and brick or stone patios.
If you don't want to go the DIY route, you can hire a pressure-washing business to do the job. Some cleaning, decking and landscaping companies also offer this service.
Don't overdo it
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If you decide to pressure-wash your home or deck yourself, a pressure-washer rental is typically $40 to $75 a day, depending on where you live.
If you're looking to buy a residential electric pressure washer, expect to pay $70 to $200. Gas pressure washers typically have more power than electric models and can range from $300 to $1,000. Powerful commercial pressure washers start at $1,000.
For pressure washers, power is gauged in pounds per square inch, and many pressure washers are capable of as much as 3,000 psi — more than enough to punch holes in siding, erode cement, damage wood decks and cause serious injury.
Don't go overboard if you're pressure-washing a house or deck. Start with the lowest setting and work your way up if you find yourself facing stubborn stains.
Take safety precautions
Never point a pressure washer at people or pets, and be sure to wear protective glasses, gloves, boots and long sleeves while operating one.
If it's windy, pay attention to which way the wind is blowing to keep water and debris from spraying back at you.
If you're pressure-washing your house, start at the top and work your way down, avoiding electrical outlets, windows and screens. Know your surroundings and be cautious using a pressure washer around overhead wires, electrical panels and exterior lights.
Hiring a pressure washer
You might be able to tackle smaller pressure-washing jobs like a one-story home or a deck, but for big jobs, it's usually best to call a professional. They have the right equipment for hard-to-reach areas and the experience to do so without falling. They also know how to clean specific areas, such as the roof, without causing damage.
Cost of a professional job
The cost to have your house pressure-washed depends on where you live, the size of your home, and how much dirt and mold needs to be removed. In 2014, Angie's List members reported spending an average of $338 on professional pressure-washing.
Deck cleaning alone typically costs between $0.25 and $1.50 per square foot. The price is often higher for multi-level decks, and some companies charge extra to clean deck railings and stairs.
If you're having your deck pressure-washed, consider having it sealed or stained as well, to protect the wood and extend its life. Hiring a professional to clean and seal your deck can cost from $1 to $5 a square foot, for a total $320 to $1,600, depending on the size of your deck.
Power-washing businesses are generally not required to be licensed, so before hiring a contractor, take time to read customer reviews and ask for references.
Note: If a power washer will work in an area with plants or other items that could be damaged, ask what kind of cleaning solution will be used and whether it could damage plants or soil.
Angie Hicks compiles the best advice from the most highly rated service pros on Angieslist.com to answer your questions. Ask Angie your question at firstname.lastname@example.org.
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