If you have noticed dark streaks running down your shingles or debris collecting in the roof valleys after every storm, you are not imagining things and the roof is probably not failing. Knoxville’s warm seasons, steady rainfall, and heavy tree canopy create the kind of conditions where algae and organic buildup settle into shaded roof surfaces faster than most homeowners expect. The problem is not neglect. It is climate, and it happens to roofs all across this area.
Soft washing is the cleaning method built for this. The solution goes on, dwells, and handles the organic growth without putting pressure on your shingles. We do not pressure wash roofs. High-pressure cleaning cracks shingles, forces water under flashing, and can void manufacturer warranties, which means it creates a different set of problems than the one you started with.
Before any solution touches your roof, we inspect for visible damage, follow Asphalt Roofing Manufacturers Association (ARMA) guidelines throughout the cleaning, protect your landscaping from start to finish, and work from ladders where the job allows to avoid unnecessary foot traffic on the surface.
When the crew leaves, those dark streaks are gone. Your shingles are intact, your manufacturer warranty is protected, and your roof looks the way it should again without a pressure washer having touched it.
Get a free estimate. We quote most roofs the same day using satellite imaging, no ladder required.
Asphalt shingle roofs are the most common type across Knoxville, and soft washing is the right approach for them.
Before any solution goes on, we pre-wet your landscaping and surrounding property. Then the cleaning mix of bleach, soap, and water is applied to the roof surface and allowed to dwell.
The roof is not rinsed.
We work from ladders with stabilizers where the property allows, which helps reduce foot traffic on the shingles. The process follows Asphalt Roofing Manufacturers Association (ARMA) guidelines, which is what asphalt roofing manufacturers recommend.
If your warranty or the safety of your shingles is a concern, that alignment helps give you a clearer answer before you book.
If you have a metal roof, strong bleach concentrations are a real risk to the surface.
Our team uses a more diluted solution for metal roofs and typically scrubs by hand to compensate for the lighter mix. It takes more effort, but it protects the material from the kind of damage that can happen when too much chemical is applied to the wrong surface.
The question homeowners ask most is whether pressure washing is part of the process.
The entire process is built on applying a solution and letting it work. Knowing that before you book means you can stop worrying about one of the most common ways roof cleaners cause damage.
Our process follows Asphalt Roofing Manufacturers Association guidelines.
If there is any question about whether the cleaning process could interact with your shingle warranty, this helps provide clarity. The process is designed around soft washing, not pressure washing.
Roof cleaning solution is effective against organic growth, but plants need to be protected while that solution is being used. That protection is built into the process.
While one technician handles the roof, a second team member stays on the ground throughout the job to keep your landscaping and surrounding property wet. Plants are soaked before cleaning starts, kept wet throughout the service, and rinsed again when the work is done.
This is standard on every roof cleaning job, not something you have to request.
Working from ladders with stabilizers means less foot traffic on your roof surface. Harnesses are used when the job calls for them. Every step on the shingles is one we only take when we have to.
When you are deciding whether to trust a company with your roof, reviews from other local homeowners can help you know what to expect. SmartWash is the highest-rated exterior cleaning company in East Tennessee and has more than 600 reviews on Google. Brennon, our owner, has more than 18 years in exterior cleaning.
Those details are useful because they help you feel more informed before choosing someone to work on your home.
Most roof cleaning quotes start remotely using satellite imagery, real estate photos, and details you provide.
That means there is usually no need to wait for a site visit before you get a number. The quote arrives by email and by text with a direct link. If we have not heard back within a couple of days, the team follows up by phone.
After you approve, confirmations go out by both email and text, followed by reminders at one week and 24 hours before the job.
Before cleaning starts, we check for loose shingles, flashing issues, and any visible damage that should be noted before the solution goes on. Ladders are set with stabilizers, harnesses are confirmed where slope or height requires it, and the ground crew member begins pre-wetting your plants so they are fully saturated before any solution reaches the roof.
The cleaning mix is bleach, soap, and water.
Shingle roofs receive the solution at working strength. Metal roofs receive a more diluted version with manual scrubbing to follow.
The entire time this is happening, the ground crew member keeps your landscaping wet and watches the surrounding property.
Once the solution is on the roof, it dwells.
We do not pressure rinse the roof surface, and the roof is not rinsed as part of the standard process.
The chemistry handles the organic growth. This is what makes soft wash roof cleaning different from pressure washing, and it is the reason your shingles and flashing are not exposed to high-pressure force.
Landscaping gets one more rinse before the crew packs up. We leave the property clean. If a concern comes up after the job, the same day or a month later, call the office. We come out, look at the property, and work through the next step with you.
Roof cleaning is priced by square footage.
For most homes, jobs fall between $500 and $1,500, with the average job around $750 and a minimum of $500.
Most cleanings take about 2 to 4 hours, with your final quote depending on:
Metal roofs need a more diluted solution and are typically scrubbed by hand, which adds time compared to a standard shingle job.
For most properties, our team can build an accurate quote using satellite imagery and real estate photos without requiring a site visit. That means getting a number does not have to mean scheduling a separate trip.
We back every roof cleaning with a 3-year warranty. If anything does not look right after the job, the process is simple. Call the office. We come out, look at the property, and work through the next step with you.
On your end, keeping debris off the roof and staying on top of leaf buildup after fall extends the time before organic growth starts coming back.
No. We use a soft wash roof cleaning process, not pressure washing. We apply the cleaning solution, let it do the work, and do not use high pressure on the roof surface at any point.
Our process is designed to align with Asphalt Roofing Manufacturers Association (ARMA) guidance and avoids the risks that come with pressure washing shingles. We use a soft wash method and inspect the roof before we start, so the approach is as surface-safe as possible.
No. We keep plants fully wet before, during, and after cleaning, and one team member stays on the ground throughout the job focused entirely on keeping your landscaping and property protected.
Metal roofs get a more diluted solution than shingle roofs because a strong bleach mix can damage the metal surface. We typically scrub metal roofs manually to compensate for the lighter concentration. It takes more labor, but it protects the material.
No. We clean asphalt shingle roofs, metal roofs, and slate roofs on occasion. We do not clean clay tile roofs or other tile roofing.
Roof cleaning typically falls between $500 to $1,500, with the average job around $750. Pricing is based on square footage, roof material, and how much care or labor your specific roof requires. The minimum is $500.
Most jobs take about 2 to 4 hours. The exact time depends on roof size, material, and the access or safety setup the job requires.
Light rain is usually workable and does not require a reschedule. Heavy or steady rain is not suitable, and we need temperatures above 40 degrees Fahrenheit before we move forward with service.
In most cases, we quote roof cleaning using satellite imagery, real-estate photos, and the details you share when you reach out. That keeps things efficient and avoids requiring a site visit just to get a number. We arrange an on-site visit when the job warrants it and will say so upfront.
Keep debris off the roof as much as you can between cleanings. If your home is under trees, staying on top of leaf buildup after fall helps slow the return of organic growth and keeps your results lasting longer.
If the streaks, buildup, or uncertainty about your roof’s condition have been sitting on your list, roof cleaning can help you get a clearer answer and a safer path forward. We use a soft wash process built around protecting your roof, not pressure washing it.
The process follows Asphalt Roofing Manufacturers Association (ARMA) guidance for shingle roofs, adjusts for asphalt, metal, and slate surfaces, includes active landscaping protection throughout the job, and comes with a 3-year roof cleaning warranty so you have a clear support path if anything comes up.
Call our team at (865) 383-3622 to request an estimate.
In most cases, we can quote the job using satellite imagery and your property details without needing to send anyone out first.
