10 Questions to Ask Before Hiring a Pressure Washing Contractor
Hiring a pressure washing contractor sounds like a low-stakes decision compared to, say, hiring a roofer or a general contractor. But the wrong hire can cost you cracked pavers, stripped paint, a damaged air conditioner unit, or a lawn full of dead grass from harsh chemical runoff. A short phone call before you book the job can save you from all of that.
Below are ten questions worth asking any pressure washing company before you sign off on a job, along with what a good answer sounds like versus a red flag.
1. Are You Insured, and Can You Provide a Certificate?
A confident contractor answers immediately and can send proof by email the same day. Hesitation, vague answers, or "we've never had a problem" instead of a direct yes should raise concern.
2. Do You Use Pressure Washing or Soft Washing for This Surface?
The correct method depends entirely on the surface. Roofs, stucco, siding, and painted wood generally call for soft washing — lower pressure combined with cleaning solution — while driveways, concrete, and pavers can typically handle higher pressure with a surface cleaner attachment. If a company says they use the same method for everything, that's a mismatch waiting to happen. For more on the distinction, see our breakdown of soft washing versus pressure washing.
3. What Chemicals Do You Use, and Are They Safe for Landscaping?
Ask specifically whether they pre-wet or cover plants, shut off irrigation lines to prevent chemical dilution issues, and rinse landscaping after treatment. Sodium hypochlorite-based cleaners are common and effective against algae but can harm grass and plants if used carelessly.
4. Can You Explain Your Process Step by Step?
A legitimate contractor can describe the job in sequence: pretreatment, dwell time, rinse, and any post-treatment steps like sealing. Someone who can't explain their own process likely doesn't have one.
5. Do You Carry Workers' Compensation Coverage?
This matters even for small crews. If a worker is injured on your property and there's no workers' comp coverage, you could face liability exposure depending on the circumstances.
6. What's Included in the Quoted Price?
| Question to Confirm | Why It Matters |
|---|---|
| Is chemical treatment included? | Water-only washing doesn't kill algae roots and results fade faster |
| Are gutters, screens, or windows included? | Some quotes cover only the main surface |
| Is there a charge for heavy staining or rust? | Extra buildup sometimes requires added time and cost |
| Is travel/trip fee included? | Rural or outer service areas may carry a fee |
7. How Long Have You Been in Business?
Longevity isn't everything, but a company that's operated for several years locally has a track record you can check through reviews, referrals, and past customers in your area.
8. Do You Offer a Guarantee?
Ask what happens if you're not satisfied — will they return to re-treat a missed spot, or is the job considered final regardless of outcome?
9. What's Your Availability, Especially During Storm or Algae Season?
South Florida's rainy season and algae growth cycles create scheduling surges. A company that gives you a realistic timeline is more trustworthy than one promising same-day service for every request.
10. Can You Provide Examples of Similar Jobs?
Ask for photos or addresses of comparable work — same roof material, siding type, or paver pattern — rather than a generic portfolio.
Putting It Together Before You Book
Once you've asked these questions, compare answers across two or three companies rather than booking the first one you call. The goal isn't to interrogate every contractor, but to filter out the ones who can't answer basic operational questions confidently.
Frequently Asked Questions
What if a company refuses to answer these questions?
That's a legitimate reason to move on. A company confident in its insurance, process, and pricing has no reason to dodge straightforward questions.
Is it normal for pricing to vary significantly between companies?
Some variation is normal based on scope and chemical use, but large gaps often mean one company is skipping steps like pretreatment or insurance coverage. Ask each company to itemize their quote so you're comparing the same scope of work.
Should I ask about equipment brand or specs?
You don't need brand names, but you should ask whether they use commercial-grade equipment capable of adjustable pressure, since consumer pressure washers often can't generate enough flow (GPM) for larger commercial or roof jobs.
How do I know if a quote is too good to be true?
If a quote is dramatically below others for the same scope of work, ask directly what's excluded — often it's chemical treatment, insurance, or a guarantee that other companies include.
Power Washing and More! is happy to answer every one of these questions directly and provide documentation before you commit to anything. Get a free quote and ask us anything along the way.