A Roofer's Guide to Asphalt-Shingle Cleaning
Soft Wash vs. Pressure Wash: What's Right for Your Roof?
Your roof isn't a driveway. We don't clean it like one.
Mr. GoodRoof uses controlled, low-pressure softwashing for asphalt-shingle roofs. We start by evaluating the roof — not just the stains — so the recommendation fits what your home actually needs.
Professional roof softwashing is available on its own and is included in every complete GoodShield Roof Restoration System.
Serving Nashville, Brentwood, Franklin, and surrounding Middle Tennessee communities. Confirm service availability for your property.
Quick Answer
Is Soft Washing Better Than Pressure Washing for a Roof?
For asphalt shingles, choose professional low-pressure softwashing — not high-pressure washing. Softwashing uses a cleaning solution and gentle application rather than force to address staining and buildup. High-pressure washing can dislodge protective granules and lift shingles. The roof's condition and the shingle manufacturer's cleaning guidance should determine how the work is done. [1][2]
Looking for roof cleaning in Nashville or a nearby community? See our Professional Roof SoftWash service and request a cleaning-only estimate.
Side-by-Side Comparison
Soft Washing vs. Pressure Washing: The Difference That Matters
| What to Compare | Professional Softwashing | High-Pressure Washing |
|---|---|---|
| How It Cleans | Uses a cleaning solution with low-pressure application and rinsing. | Uses forceful water spray as a primary cleaning action. |
| Suitability for Asphalt Shingles | The approach we use after evaluating the roof and applicable cleaning requirements. | Not an appropriate cleaning method for asphalt shingles. |
| Main Concern | Correct solution, application, roof condition, and property protection still matter. | Pressure can remove granules and lift or damage shingles. |
| Does It Repair the Roof? | No. Leaks, damaged shingles, and other defects require separate attention. | No. Cleaning pressure is not a repair method. |
| Is It Roof Rejuvenation? | No. Cleaning is a separate step from the rejuvenation treatment in GoodShield. | No. |
ARMA and GAF warn against high-pressure cleaning of asphalt shingles. [1][2]
Worth Knowing
Why We Don't Pressure Wash Asphalt Shingles
A cleaner-looking roof is not a good result if getting there damages the shingles.
The granules on an asphalt shingle are more than color and texture. They help protect the asphalt from ultraviolet exposure. High-pressure washing can remove those granules and disturb the shingles themselves. [2][3]
That is why our approach is straightforward: use a cleaning method suited to the roof instead of trying to force the stains off.
We want the discoloration gone — not the protection your shingles still have.
What Doing It Right Looks Like
Low Pressure Is Only Part of Doing the Job Right
The words "soft wash" should describe a process — not just a promise on an estimate.
A professional cleaning plan should account for the shingles being cleaned, the condition of the roof, the cleaning solution, and the landscaping and exterior surfaces below. ARMA specifically calls for precautions to protect the building and surrounding landscape and advises against scrubbing the shingle surface. [1]
Before hiring anyone, ask how they will evaluate the roof, control the application, protect your property, and handle any damage they find. A clear explanation is worth more than the cleaning label alone.
Ask Before You Sign
Compare the Scope — Not Just the Words "Soft Wash"
Two estimates can use the same cleaning term and describe different work. Before choosing a roof-cleaning company, get clear answers to these questions.
| What to Compare | What to Ask |
|---|---|
| Roof Evaluation | Will you assess the shingles and identify repairs before recommending cleaning? |
| Cleaning Method | What application method and manufacturer guidance apply to this roof? |
| Property Protection | How will you address landscaping, nearby surfaces, and runoff for this property? |
| Written Scope and Price | What roof area, preparation, and cleanup are included? What is separately priced? |
| Documentation and Next Steps | What photographs or findings will I receive, and what happens if cleaning is not enough? |
With Mr. GoodRoof, the starting point is the roof itself. We explain the findings and separate cleaning, necessary repairs, and the complete GoodShield recommendation so you understand what is being proposed.
Explore Professional Roof SoftWash or see what affects roof-cleaning cost.
The Real Starting Point
The First Question Isn't "How Do We Wash It?"
It's "What does this roof need?"
Our evaluation looks beyond the visible staining to shingle condition, flashing, pipe boots, drainage, and ventilation concerns. We explain the findings and identify work that should be addressed before cleaning or treatment.
A damaged pipe boot needs a repair. A missing shingle needs attention. Neither is fixed by washing the roof. When repairs or ventilation corrections are needed, that work is separately documented and priced.
That is the value of starting with a roofing company: the next step can be cleaning, repair, the complete GoodShield system, or replacement when the roof's condition calls for it.
GoodShield Roof Restoration System
Cleaning Is Only the First Step.
Professional Roof Cleaning + Asphalt-Shingle Rejuvenation
Softwashing and rejuvenation are not the same service. Cleaning addresses what is on the shingles. The GoodShield rejuvenation treatment is a separate application after the roof has been evaluated, qualified, cleaned, and prepared.
GoodShield brings those steps together in one roofer-led system:
- Evaluate
- Correct
- Clean
- Rejuvenate
- Maintain
We evaluate the roof, identify and separately scope needed corrections, professionally softwash the shingles, apply the rejuvenation treatment to a qualifying roof, and document the work with maintenance guidance.
For a roof that qualifies, we recommend the complete GoodShield system: professional cleaning and rejuvenation delivered together.
Homeowners seeking cleaning without rejuvenation can request a separate Mr. GoodRoof Professional Roof SoftWash estimate. A roof that is failing or has unresolved damage needs the appropriate repair or replacement plan instead.
Frequently Asked Questions
Roof Softwashing Questions, Answered
Can I pressure wash my asphalt-shingle roof?
No. High-pressure washing can damage asphalt shingles. ARMA advises against using a power washer on them. Have the roof evaluated and use the cleaning approach appropriate to its material and condition. [1]
Will softwashing remove black streaks?
Professional softwashing can address black streaks associated with algae discoloration. Moss and other buildup may need a different cleaning plan or more time. The condition should be identified first, and the expected result explained before work begins. [4] Learn what black streaks on a roof can mean.
Is every roof a candidate for cleaning or GoodShield?
No. Cleaning eligibility and GoodShield eligibility are not interchangeable. Significant deterioration, unresolved leaks, damaged decking, or uncertain treatment compatibility require further evaluation. We do not recommend washing or treating a roof as a substitute for work it actually needs.
Is softwashing the same as roof rejuvenation?
No. Softwashing is the cleaning step. GoodShield includes professional cleaning followed by a separate rejuvenation treatment for qualifying asphalt-shingle roofs.
Do I have to purchase GoodShield to get my roof cleaned?
No. Mr. GoodRoof Professional Roof SoftWash is available as a standalone service. Tell us that you are looking for cleaning only, and we can provide that scope separately. For roofs accepted as GoodShield candidates, our standard recommendation remains the complete system.
How much does roof softwashing cost?
Your estimate should account for the roof area, pitch, access, condition, and preparation required. Compare the written scope — not just the final number — and ask which repairs or additional services are separate. See our roof-cleaning cost guide.
My roof was already pressure washed. What should I do?
Arrange an evaluation before scheduling more cleaning or treatment. Explain what was done and share any before-and-after photos. The evaluation should document the roof's current condition rather than assume either that damage occurred or that the cleaning was harmless.
Ready When You Are
Before Someone Cleans Your Roof, Let's Make Sure It's the Right Next Step.
Tell us what you are seeing — black streaks, buildup, a repair concern, or a roof that simply looks older than it used to. Mr. GoodRoof will evaluate the condition and explain the next step.
Clean. Repair. Restore. Replace — based on what the roof actually needs.
Service Area: Middle Tennessee
Phone: (615) 824-8100
Professional Roof SoftWash is available separately for homeowners seeking cleaning without rejuvenation.
Request My Roof Evaluation
Roof-Cleaning References
These sources support the general roof-cleaning information above. They do not constitute manufacturer endorsement of GoodShield or its rejuvenation treatment.
