Reading a Pressure Washing Quote in Rochester: The 4 Line Items That Matter and 5 Red Flags That Don't

A pressure washing quote is not a plumbing quote. There's no permit, no materials list, no copper vs PEX decision to make. The job is: chemicals, water, equipment, and labor applied to your exterior surfaces for a few hours. So why do the quotes Rochester homeowners get vary so widely — $150 for a house wash, $650 for the same house wash two streets away?

Because what looks like the same job often isn't. The difference is in what the quote does and doesn't specify: the method applied to each surface, the chemical concentration, the warranty on the result, and whether the contractor is insured to be on your property. A single-number quote — "$275 for your house" — tells you nothing about any of these. A good quote breaks them out.

This guide explains what a legitimate pressure washing quote should contain, what the vague and dangerous language looks like, and five red flags that will look alarming but are actually fine.

The 4 line items a real quote has

1. Per-surface pricing with method specified

A legitimate quote separates your job by surface type and specifies the method for each:

• House siding soft wash: $385 (not "house wash: $385")
• Roof soft wash: $485
• Driveway concrete pressure wash: $225
• Deck cleaning with brightener: $285

The method matters because the price means nothing without it. A house "pressure wash" at $150 that applies 2,500 PSI to vinyl siding will not look good — it may force water behind the siding, and the contractor has technically done what they quoted. A house "soft wash" at $385 that uses 1.5% sodium hypochlorite at under 500 PSI and kills the mold colony at the root is a different product at a different price.

Any quote that combines multiple surfaces into a single price without specifying method is a quote that doesn't commit to anything. When you call to ask "how exactly will you wash my siding?" the answer should be immediate and specific: "soft wash with 1.5 to 2% sodium hypochlorite and surfactant, rinsed at low pressure." Not "we use safe, biodegradable cleaners." That's marketing, not method.

2. Chemistry concentration

This is the item almost no Rochester homeowner asks for and almost no contractor volunteers unprompted.

The ARMA TR-7-Bulletin recommendation for asphalt shingle roof cleaning is a 50:50 water-to-bleach mix using 12.5% SH — which works out to approximately 6.25% SH applied to the shingle surface. The PWRA (Pressure Washing Resource Association) standard for house siding soft wash is 1 to 2% SH applied concentration. These are specific, testable numbers, and a contractor who knows them will say them without hesitation.

If the answer to "what concentration are you running on my roof?" is "we use an industry-standard soft-wash solution" or "it's a biodegradable cleaner," press again. "What percentage of sodium hypochlorite by application?" The reluctance to name a number is itself informative. A well-trained soft-wash operator knows exactly what they're mixing because they're diluting 12.5% SH concentrate on-site: they know the ratio, the dwell time, and why.

The concentration matters because under-concentration saves the contractor money on chemical cost at the expense of treatment efficacy. A 0.5% SH solution on a roof colonized by Gloeocapsa magma will lighten the visible staining by disrupting the pigment layer without killing the underlying cyanobacteria structure. The roof looks cleaner for six months and then re-streaks. The contractor cites their warranty and comes back for a second treatment at half price — or the warranty has already expired and you book again at full price. Either way, you paid twice.

3. Warranty terms

The industry benchmark in the Rochester soft-washing market is an 18-month mildew-return warranty on house siding and a 24-month streak-return warranty on roof soft wash. These are the numbers BF Home Services and similar PWRA-credentialed operators advertise. They're achievable because a correctly diluted SH treatment at the right dwell time does kill the organism, not just surface-clean it.

A quote with no warranty is not necessarily fraudulent — some operators price their work to be redone every year, which can be legitimately cheaper if the annual cleaning price is low enough. But a quote with no warranty and a standard-range price ($385 for a house wash, $485 for a roof) is a quote for a standard job without the performance commitment. You're paying full price for a service that the contractor isn't willing to stand behind.

Warranty terms should specify:

• What triggers coverage (mildew return within the period, not "we'll come look at it")
• What the coverage includes (re-treatment at no charge, or partial credit)
• Whether it requires the same contractor to do follow-up treatment

A warranty that requires you to book the same contractor for future work at "preferred pricing" is a relationship clause, not a guarantee. Read it.

4. Insurance and COI availability

This is the one that costs homeowners real money when they skip it.

A pressure washing contractor without liability insurance working on your property is a contractor whose mistakes become your homeowner's insurance claim. Water damage to a basement from a side-wall soft-wash that found a gap in the siding, a slip-and-fall by an uninsured worker on your driveway, landscape damage from runoff — all of these are claims that go to the contractor's insurer if they have one, and to yours (with your deductible and rate impact) if they don't.

The document you want is a Certificate of Insurance (COI) — a one-page form from the contractor's insurer listing the policy type, coverage limits, and policy period. Any legitimate operator has one and can email it within 24 hours. The minimum you should accept for a residential soft-wash is $1 million in general liability coverage. BF Home Services publishes $2 million on their public listings; that's the higher end of the market and a reasonable benchmark.

If a contractor says "we're insured" but can't produce a COI, the insurance may be lapsed, may be a policy that covers the truck but not on-property work, or may not exist. Ask for the COI before you confirm the booking, not after.

5 things that look like red flags but aren't

1. A quote delivered by phone without an in-person visit

For most standard house-soft-wash jobs, a phone quote is fine. The contractor needs to know your square footage (easily estimated from your address on Google Maps), the substrate (you can describe your siding type), the story count, and whether there are any unusual access situations. They're not quoting a complex renovation — they're quoting a cleaning job that uses standard pricing anchors.

An in-person visit before quoting is more relevant for commercial jobs, heavily mold-damaged surfaces that might need a second application, or paver/masonry work with staining that needs inspection. For a standard vinyl-sided colonial in Penfield, a phone quote from an experienced contractor is perfectly adequate.

2. Prices that are higher than your neighbor's

The correct comparison isn't your neighbor's quote — it's your square footage times the per-foot rate. A 3,000 sq ft two-story home with a complex roofline and heavy north-wall mold load should cost more than your neighbor's 1,600 sq ft ranch. Also: your neighbor may have gotten a quote with no warranty and 0.5% chemistry, in which case their lower price reflects a different product.

3. A contractor who recommends against soft washing your roof

This is a legitimate position, but it needs a reason. Roofs with moss that has developed true holdfast root structures in the shingle granules — mature, three-plus-year moss growth that has begun lifting shingle edges — may require mechanical removal before or after soft washing. A contractor who says "your roof needs more than just a soft wash" should tell you specifically what they're seeing and what they recommend.

4. A quote that includes post-treatment guidance

Being told to keep cars off the driveway for 24 hours, not to irrigate the lawn adjacent to the treated area for 48 hours, or to ventilate the garage after a concrete treatment is not an insurance dodge — it's correct post-treatment protocol. The sodium hypochlorite in a soft-wash solution is diluted by the time it hits your landscaping, but heavily treated areas with high runoff will have elevated pH for a day or two post-treatment.

5. An 18-month mildew-return warranty that doesn't cover "extreme weather events"

This is standard exclusion language in exterior cleaning warranties. Mildew return caused by a specific weather event (a warm, wet summer that drives accelerated biological growth, which is different from normal regrowth from surviving spores) is functionally impossible to distinguish from normal regrowth anyway. The exclusion matters less than whether the contractor has ever honored a warranty claim. Ask: "Have you come back to re-treat under warranty in the past 12 months?" A yes with details is more valuable than the warranty document itself.

The actual red flags

The $99 house wash. A 2,000 sq ft house soft wash at the correct method and concentration costs the contractor roughly $35 to $50 in chemical cost alone, plus truck time and labor. A $99 price cannot produce the correct method. It's either high-pressure on vinyl siding (cheap because no chemistry required), very low concentration chemistry with minimal dwell (cheap because the chemical cost is negligible), or a bait-and-switch quote where the real number emerges after "we see what we're dealing with."

No answer to "what PSI are you running on my siding?" The answer for a soft-wash contractor should be automatic: under 500 PSI with a fan nozzle. If the contractor hesitates, gives a range that includes 1,500 PSI, or says "whatever the job requires," they are either running pressure on siding or don't understand why the PSI question matters.

No mention of plant protection. Sodium hypochlorite runoff at working concentration will damage lawn and plantings in direct contact. Any soft-wash contractor worth hiring mentions pre-watering the adjacent plant beds and post-rinsing the perimeter. If landscaping protection doesn't come up in the quote conversation and you have to ask, it's either not a standard step for them (problem) or they forgot (ask again before they start).

Verbal-only warranty. The 18-month warranty should be in writing, even if it's just an email confirmation. A verbal "I stand behind my work" from a contractor you've never met before is not a warranty.

Can't tell you the surfactant they use. A soft-wash mix is SH plus surfactant. The surfactant determines how the solution clings to vertical surfaces (dwell time depends on it), how it interacts with landscaping runoff, and whether it's genuinely biodegradable. "We use a professional surfactant" is not an answer. Common options include Elemonator, Simple Cherry, or similar. A contractor who can't name their surfactant likely doesn't understand why it matters.

Flynn Power Washing and Brighter Days Exterior Cleaning both operate on explicit soft-wash protocols and will discuss chemistry specifics if asked. For the standard line items on a house soft wash quote and what to expect on a roof soft wash quote, the service pages have the current pricing anchors and what's included.

Questions about a quote you've already received — or a contractor who won't answer the basic questions? Reach us at connormeador@gmail.com.