If the north side of your home looks a little green, you are not imagining it, and you are not alone. Knoxville’s warm, humid climate and heavily wooded neighborhoods create near-ideal conditions for algae and organic buildup to settle on residential siding.
That does not mean you have neglected your home. It usually means the environment is doing what it does. Shade, moisture, and slow drying time can leave your siding looking stained, streaked, or older than it really is.
Our team uses a soft wash process built specifically for residential siding, not high-pressure blasting. A professional solution of bleach, soap, and water is applied at approximately 600 Pounds per Square Inch (PSI), allowed to dwell for five to ten minutes while the chemistry does the actual cleaning work, and then rinsed with low pressure. Your home gets clean without taking unnecessary punishment in the process.
Imagine looking at your home from the street after the crew leaves, white siding that looks white again, no green shadow on the north wall, no embarrassment when friends pull into your driveway. That’s the kind of result our customers call us back for every year.
Getting started is straightforward. Most estimates are built from satellite imagery and real estate photos, so you do not have to arrange a visit just to get a number. Your landscaping is protected before, during, and after the service. And if algae comes back within a year, we return at no charge.
When you are ready, call us to request a free estimate.
Single-story homes, two-story homes, and multifamily residential properties all fall within the scope of our house washing service.
The core cleaning chemistry stays consistent across approved siding materials, though the care required and the overall cost vary depending on what you have on your home.
Vinyl and Hardie board are the most common materials seen on homes in and around Knoxville, and the soft wash process works well on both.
Plants are pre-wetted before anything else. Then the bleach, soap, and water solution is applied at approximately 600 Pounds per Square Inch (PSI), left to dwell for five to ten minutes, reapplied if needed, and followed by a low-pressure rinse.
Plants are watered again during the rinse and once more at cleanup.
Vinyl is one of the less expensive siding materials to clean, which is why most vinyl-sided homes tend to land toward the lower end of the pricing range.
Brick and stucco are both cleaned using the same solution and application method.
The practical difference for homeowners is cost. Stucco runs higher than vinyl because the surface texture holds more material and demands closer attention during both application and rinsing to clear it properly.
Wood siding can be cleaned safely using the soft wash method when the application is controlled and the rinse pressure is kept appropriate.
The focus is on removing algae and organic buildup without driving water into the wood grain. This service does not include stain restoration, specialty wood additives, sanding, or hand-stripping.
Choosing someone to clean your home’s exterior can feel risky if you are worried about siding damage, plant safety, poor communication, or unclear pricing.
Our team is built to reduce those concerns by giving you a clear process, careful protection steps, and straightforward communication from the first quote through the final rinse.
When you are choosing an exterior cleaning company, reviews from real customers in your area can help you feel more confident before booking.
We are the highest-rated exterior cleaning company in East Tennessee and second-highest in the state, with 600+ reviews, giving homeowners a clearer picture of what to expect from the quoting process, communication, service, and results.
A safe house wash depends on judgment as much as equipment. The person cleaning your home needs to know how long the solution should dwell, when a second application is needed, and how to protect nearby landscaping throughout the job.
Brennon Williams, the owner, brings more than 18 years of exterior cleaning experience, which helps homeowners feel more comfortable knowing their siding, plants, and property are being handled carefully.
Estimates are built using satellite imagery and real estate photos and arrive the same day in most cases.
After that, the communication follows a clear, consistent sequence: emailed quote, text link, phone follow-up if needed, automated follow-up emails, confirmation by both email and text after approval, reminders before service, a review request afterward, and a check-in as your one-year mark approaches.
Before the cleaning solution touches your home, your landscaping is already being protected.
Plants are soaked with water before the solution is applied, rinsed again while the house is being rinsed, and rinsed one final time at cleanup. This three-stage approach is a built-in part of every house wash, not an optional precaution.
Reliable equipment protects your schedule as much as anything else. When gear fails on service day, the inconvenience falls on you.
Investing in professional-grade equipment means fewer breakdowns and fewer situations where your day gets rearranged for reasons that could have been avoided.
Start by requesting a quote or estimate.
Most are built using satellite imagery and real estate photos, so there is no need to schedule a property visit in most cases. If the scope of a job requires a closer look before a final number can be given, an on-site visit can be arranged.
Either way, most customers receive their quote the same day they reach out.
Once the quote is ready, it arrives by email and text.
If a response has not come in after a couple of days, a phone follow-up goes out, and automated emails keep the quote accessible while the decision is still open.
After approval, a confirmation is sent by both email and text. Reminders follow at one week out and again 24 hours before service.
One preparation note worth mentioning: keep pets out of the active work area while cleaning is underway. Once the home has been fully rinsed, they are free to use the lawn and driveway normally.
Before any solution goes near your home, your landscaping is already being looked after.
Every plant, shrub, and garden bed in the area gets pre-wetted with water. The outdoor water source at the property is used for this in most cases.
Soft washing is considerably lighter on water usage than most homeowners expect, with the estimated cost to a typical water bill running about $2 to $3 for the full job.
A professional solution of bleach, soap, and water is applied at approximately 600 Pounds per Square Inch (PSI).
That is enough pressure to deliver the solution to the surface without the force that can cause siding damage, water intrusion, or paint failure. The solution then sits for five to ten minutes while it works through the algae and organic material at the surface level.
For heavier buildup, particularly on north-facing walls that have been shaded and damp through multiple seasons, the solution is reapplied and allowed to dwell again before the rinse. Pressure is kept as low as possible throughout.
Your home is rinsed with low pressure once the solution has completed its work. Plants receive their second watering during the rinse and a third at cleanup before the crew clears the site.
Most jobs take between one and three hours depending on home size, siding material, and how much buildup needs to be addressed. After the job, a review request goes out, and a longer-term reminder follows as the one-year mark approaches.
Understanding the price before you call makes the whole process easier. We price our house washing per square foot, not by the hour, which means the quote you receive reflects the actual scope of your home rather than how fast or slow the crew works.
For most homes in the area, a house wash starts at about $450, with larger or more demanding jobs reaching about $900, and the average landing close to about $550.
Where your project falls depends on:
If you have been thinking about more than one exterior cleaning service, bundling them together can be a practical way to get more done at a better overall value. Customers who bundle services consistently receive a discount, built into the quote. Mention everything you want addressed when you call.
Services that pair naturally include roof cleaning, gutter cleaning, window cleaning, driveway cleaning, concrete cleaning, patio cleaning, pool surround cleaning, and composite deck cleaning. Just mention the combination when you request your quote and the estimate will reflect it.
A one-year algae-free guarantee comes with every house wash we perform. If algae returns within 12 months of your service, the team comes back and takes care of it at no charge.
The goal of that guarantee is simple. You should never have to wonder whether you will be left dealing with the same problem again shortly after paying to have it fixed.
If something else about the results is not right, the process is straightforward. Call the office, the property gets inspected, and the next step is determined based on what is actually found.
Yes. House washing can be done safely around plants when the right precautions are in place.
The process includes pre-wetting all surrounding landscaping before the cleaning solution is applied, rinsing plants again while the home is being rinsed, and a final rinse at cleanup. That three-stage approach is built into every house wash, not something that only happens when you ask.
Pets should be kept out of the active work area while cleaning is underway.
Once the home has been fully rinsed, the outdoor areas are clear for normal use, including the lawn and driveway.
No. House washing at SmartWash is a soft wash process.
The solution is applied at about 600 Pounds per Square Inch (PSI), allowed to dwell for five to ten minutes, and followed with a low-pressure rinse. The cleaning solution handles the work. High pressure is not part of this process.
In Knoxville, shaded siding dries more slowly after rain because of the area’s tree cover, consistent humidity, and warm temperatures.
That slower drying creates a surface that is more hospitable to algae and organic buildup, especially on the north-facing side of the home. It is a common pattern in this area and one that annual cleaning tends to address well.
Once a year works well for most Knoxville homeowners.
Homes with more shade, heavier tree cover, or a history of recurring algae growth may benefit from cleaning more frequently to stay ahead of buildup before it becomes heavy.
In most cases, yes. The outdoor water source at the property is used for residential house washing.
Soft washing uses far less water than most people expect, and the estimated cost to a typical water bill runs only about $2 to $3 for the full job.
Most jobs take between one and three hours.
The actual time depends on home size, siding material, and the level of buildup being addressed.
No. The house washing service covers vinyl, Hardie board, brick, stucco, and wood.
Metal siding falls outside the scope of this service.
No. Oxidation removal is a separate service.
If your siding has visible chalky oxidation, that is a different conversation and a different service from a standard house wash.
Yes. We handle runoff carefully on every job to comply with Tennessee stormwater regulations and avoid anything entering storm drains. For large commercial jobs near city streets, we use water reclamation equipment.
Responsible handling of runoff is taken seriously on every job.
If your siding has been dealing with algae, green streaking, or buildup that keeps coming back no matter what you do, a professional soft wash house wash is likely the most practical and safest solution for your home.
Every job comes with three-stage plant protection, consistent communication from the first quote through the final rinse, and a one-year algae-free guarantee.
Call (865) 383-3622 to request a quote and get a straight answer on what it will take to get your home looking the way it should.
