How to Choose a Pressure Washing Company in Charleston, SC
Anyone can buy a pressure washer. That is exactly why hiring exterior cleaning is riskier than it looks: the difference between a careful company and a wand for hire is invisible until something goes wrong. Here is what to actually check, in order.
1. Start with insurance, not price
Exterior cleaning happens on ladders, around windows, near cars, and on top of roofs. If something goes wrong at your home, the company's insurance is what stands between you and the bill. Ask every company for a certificate of insurance, and expect a specific number, not just "we're covered." Established companies carry seven-figure liability coverage; we carry a $2 million policy and send the certificate to anyone who asks.
If a company hesitates, changes the subject, or says the certificate is "with the office," move on. That single question filters out most of the risk in this industry.
2. Ask what will touch your siding
This is the question that separates professionals from equipment owners. High pressure belongs on concrete: driveways, sidewalks, and some hardscapes. It does not belong on siding, stucco, painted wood, or any roof, where it strips paint, etches soft surfaces, forces water behind boards, and voids shingle warranties.
The right answer is a soft wash: a cleaning solution matched to the surface, applied at low pressure, that kills the mold and algae at the source and rinses off gently. If a company plans to pressure wash your whole house, that is not a cleaning plan, it is a damage plan. Our guide on soft washing vs pressure washing covers exactly which method belongs on which surface.
3. Read the reviews like an inspector
A star rating alone tells you little. Look for three things: recent reviews (a company can change a lot in two years), photos of finished work on homes like yours, and how the company responds when something went wrong. A thoughtful reply to a critical review says more about who will show up at your house than ten five-star ratings.
Local detail matters too. Reviews that mention your area, multi-story coastal homes, or the same surfaces you need cleaned are worth more than generic praise.
4. Expect a real quote, not a number shouted from a truck
A professional quote lists the surfaces being cleaned, the method for each, what is excluded, and the price. It should arrive quickly, in writing, and without pressure tactics like today-only discounts. In Charleston, most reputable companies can quote a standard home from photos or a quick drive-by the same day you ask.
5. Know the red flags
- No certificate of insurance, or a vague answer about coverage
- High pressure planned for siding, stucco, or a roof
- A price dramatically below every other quote
- Door-to-door pressure with a today-only price
- No mention of protecting plants and landscaping
- No written record of what was agreed
Questions worth asking before you book
- What method do you use on siding, and what on the roof? Soft wash on both, always. High pressure only on concrete and hard surfaces.
- Can you send your certificate of insurance? The answer should simply be yes.
- How do you protect plants and landscaping? Listen for pre-wetting, rinsing during and after, and controlling runoff.
- What happens if I am not happy with the result? A confident company backs its work. We back ours with a 100% satisfaction guarantee.
- Do I need to be home? Usually not, as long as water and gates are accessible. You should get photos of the finished work either way.
Where TrueWash fits
We are a Charleston-based exterior cleaning company. We soft wash every house and roof at low pressure, use controlled pressure only on concrete and hardscapes, carry $2 million in liability insurance, and hold a 5.0 rating on Google. Quotes are fast, written, and free, and every job is covered by a 100% satisfaction guarantee. Judge us by the same checklist above; that is what it is for.
Hiring a pressure washing company FAQ
- How much insurance should a pressure washing company carry?
- Enough to actually cover a worst-case accident on your property. Ask for a certificate of insurance rather than taking a yes at face value. A company that carries real coverage, like the $2 million liability policy we hold, will send the certificate without hesitation.
- What is the one question that reveals how careful a company is?
- Ask what will touch your siding. The right answer is a low-pressure soft wash with a cleaning solution, never high pressure. A company that plans to point a pressure wand at siding, stucco, or a roof is a company that can damage your home.
- Are cheap pressure washing quotes a red flag?
- Often, yes. A very low price usually means speed: high pressure on every surface, no pre-treatment, no landscaping protection, and no insurance overhead. The damage that approach can cause costs far more than the money saved.
- Should the company be local to Charleston?
- It helps. Coastal homes deal with salt air, marsh humidity, and algae growth that inland companies see less of. A local crew also has a local reputation to protect, which shows up in how carefully they work.
- What should a professional quote include?
- The surfaces being cleaned, the method for each one, what is and is not included, and a clear price. If the quote does not say how your siding or roof will be treated, ask before you book.
- Do I need to get multiple quotes?
- It is reasonable to compare two or three. Just compare methods and coverage, not only the number at the bottom. The cheapest quote and the best value are rarely the same thing in exterior cleaning.
Related reading
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