Kennedy Power Washing: What to Know Before You Hire

Kennedy Power Washing is a local South Carolina contractor offering pressure washing for residential and commercial properties

Kennedy Power Washing operates as an independent pressure washing business serving South Carolina customers. Like other contractors in this category, they use high-pressure water systems to clean exterior surfaces—driveways, decks, siding, and similar areas. Before hiring any pressure washing contractor, you'll want to understand what the service involves, what it costs, and how to evaluate whether a particular company is the right fit for your property and budget.

This guide covers what to look for when considering Kennedy Power Washing or any local pressure washing contractor, how to prepare for the work, and what questions to ask before booking.

Key Takeaways

• Pressure washing uses high-pressure water to remove dirt, mold, and stains from exterior surfaces, and different surfaces require different pressure levels to avoid damage.
• Before hiring any contractor, confirm their insurance coverage, ask for references from recent jobs, and get a written estimate that lists what surfaces will be cleaned and at what pressure.
• Prepare your property by moving outdoor furniture, securing loose items, and closing windows and doors before the contractor arrives.
• Pressure washing costs vary based on property size, surface type, and how dirty the surfaces are, so comparing multiple estimates helps you understand local pricing.
• Some surfaces—like older wood siding or delicate stone—can be damaged by pressure washing and may need gentler cleaning methods instead.

What pressure washing actually does to your surfaces

Pressure washing forces water at high speed to strip away dirt, algae, mold, and stains. The pressure is measured in PSI (pounds per square inch), and different surfaces tolerate different levels. Concrete driveways can handle 3,000 to 4,000 PSI, while wood decks need 1,500 PSI or less to avoid splintering and gouging. Vinyl siding typically requires 1,300 to 1,600 PSI.

A contractor who doesn't adjust pressure for the surface type can cause real damage—stripping paint, splintering wood, or cracking mortar between bricks. When you contact Kennedy Power Washing or any contractor, ask specifically what pressure they use on each surface you want cleaned. A contractor who gives you one pressure number for everything is a red flag.

Questions to ask before you book

Start by asking whether Kennedy Power Washing is insured. Liability insurance protects you if the contractor damages your property or injures themselves on your property. Ask for proof of insurance and verify it's current. You should also ask whether they're bonded, which means they've posted a financial may provide that they'll complete the work as promised.

Request references from three to five recent jobs similar to yours—same surface type, similar size. Call those references and ask whether the work was completed on time, whether the contractor cleaned up afterward, and whether they'd hire them again. Ask Kennedy Power Washing what pressure they'll use on each surface and whether they'll do a test area first so you can see the results before they do the whole job.

Get a written estimate that lists exactly what will be cleaned, what pressure will be used, whether they'll use chemicals or just water, and the total cost. Verbal estimates are easy to dispute later. Ask about their cancellation policy in case weather prevents the work, and confirm whether they'll move lightweight items like patio furniture or whether you need to do that yourself.

Preparing your property for the work

Move outdoor furniture, grills, potted plants, and anything else that could get wet or be in the way. Close all windows and doors, and ask the contractor whether you should close interior doors to prevent water from traveling through the house if a window seal isn't perfect. Cover any outdoor electrical outlets or fixtures that shouldn't get sprayed.

If you have delicate plants near the area being cleaned, ask the contractor whether they recommend moving them or whether they can work around them. Some contractors will spray plants with fresh water first to protect them from cleaning chemicals, but not all do this automatically. If you have pets, arrange for them to be inside or away from the property during the work.

Understanding pressure washing costs in South Carolina

Pressure washing prices vary based on the size of the area, how dirty it is, what surface it is, and whether chemicals are needed. A small driveway might cost less than a large deck or a two-story house with siding. Get estimates from at least two contractors so you understand what's typical in your area. The lowest price isn't always the best deal—a contractor who's significantly cheaper than others may be using lower pressure (which means less effective cleaning) or skipping steps like moving your furniture or cleaning up.

Ask whether the estimate includes cleanup and whether there are extra charges for things like removing stubborn stains or treating mold. Some contractors charge by the square foot, others by the hour, and others give a flat rate for the whole job. Understanding how they price their work helps you compare estimates accurately.

Surfaces that need special care or different methods

Older wood siding, cedar shakes, and delicate stone like limestone or flagstone can be damaged by pressure washing. These materials may need soft washing instead—a method that uses lower pressure combined with specialized cleaning solutions. Painted surfaces, stucco, and older brick can also be damaged by high pressure. Before booking, tell the contractor about any surfaces you're concerned about and ask whether they recommend pressure washing or a gentler method.

Asphalt shingles on roofs should generally not be pressure washed at all, as the force can lift shingles and void your roof warranty. If your roof needs cleaning, ask about low-pressure or chemical-only methods, or consider a different contractor who specializes in roof cleaning specifically.

What happens after the work is done

A good contractor will do a final walkthrough with you to make sure you're satisfied with the results. They should clean up debris, rinse away any cleaning solution residue, and leave your property in better condition than they found it. Ask about their warranty—some contractors may provide their work for a certain period, meaning they'll return to touch up areas that don't hold up.

After pressure washing, some surfaces benefit from sealing to protect them from dirt and mold returning quickly. Concrete driveways and wood decks are common candidates for sealing. Ask whether Kennedy Power Washing offers sealing services or can recommend someone who does, and whether sealing is worth the cost for your particular surfaces.

Frequently Asked Questions

Can pressure washing damage my house?

Yes, if the wrong pressure is used on the wrong surface. High pressure can strip paint, splinter wood, crack mortar, and lift roof shingles. Always confirm the contractor knows what pressure to use on each surface and ask for a test area first.

Is pressure washing safe for vinyl siding?

Vinyl siding can be pressure washed, but it requires lower pressure—typically 1,300 to 1,600 PSI—and the nozzle should be kept at an angle to avoid forcing water behind the siding. Ask the contractor whether they have experience with vinyl before booking.

How often should I have my driveway pressure washed?

That depends on your climate and how much dirt accumulates. In South Carolina's humid environment, mold and algae can return within a year or two. Many homeowners pressure wash driveways every one to three years, but you can do it more or less often based on how it looks.

What's the difference between pressure washing and soft washing?

Pressure washing uses high-pressure water to remove dirt and stains. Soft washing uses lower pressure combined with cleaning chemicals to remove mold, algae, and stains without the force that can damage delicate surfaces. Soft washing takes longer but is safer for wood, older brick, and stone.

Should I pressure wash my roof?

Most roofing manufacturers recommend against pressure washing asphalt shingles because it can lift shingles and void your warranty. Ask a roofing contractor about low-pressure or chemical-only cleaning methods instead, or hire a company that specializes in roof cleaning.