Soft wash roof cleaning is the preferred method for removing black streaks, algae, moss, and organic growth from asphalt shingle roofs without relying on damaging high pressure. Instead of blasting buildup from the shingles, professional soft washing treats the organic growth responsible for roof discoloration.
At Aqua Boy Power Washing, we use professional roof-cleaning methods for homes throughout Marlton, Medford, Moorestown, Cherry Hill, and surrounding South Jersey communities. If your roof has developed dark streaks, algae, moss, or green growth, here’s what you should know about soft wash roof cleaning before hiring a contractor.
What Are the Black Streaks on My Roof?
Those dark streaks running down many South Jersey roofs aren’t necessarily dirt.
A common cause is Gloeocapsa magma, a type of cyanobacteria associated with dark discoloration on asphalt shingles. Roofs can also accumulate algae, moss, lichen, pollen, dirt, and other organic material.
South Jersey’s humid conditions, shade, moisture, and tree coverage can all contribute to visible roof growth and staining.
The result can be a roof that looks much older and dirtier than it actually is.
Should You Pressure Wash an Asphalt Shingle Roof?
Generally, high-pressure washing should not be used to clean asphalt shingles.
A roof isn’t a driveway.
Using excessive pressure can potentially damage shingles and disturb the protective granules on their surface. Professional roof cleaners instead use a cleaning method appropriate for the roofing material and its condition.
For asphalt shingles, that commonly means soft washing.
What Is Soft Wash Roof Cleaning?
Soft washing uses a specialized cleaning solution applied at low pressure to treat organic staining and growth.
Instead of attempting to remove everything with the force of water, the cleaning solution does the work.
A professional roof cleaning process may include:
- Inspecting the roof and surrounding property.
- Identifying the roofing material and areas of organic growth.
- Protecting landscaping and sensitive areas around the home.
- Applying the appropriate roof cleaning solution at low pressure.
- Allowing the solution time to treat algae and staining.
- Completing a final inspection and cleanup.
This is very different from putting a pressure-washing wand close to the shingles and blasting them clean.
Roof Cleaning South Jersey: How Much Does It Cost?
There isn’t one price that applies to every house.
Roof cleaning in South Jersey may commonly cost several hundred dollars and can exceed $1,000 on larger or more complex roofs. The actual price depends on the individual property and scope of work.
Factors affecting roof cleaning cost include:
- Roof size
- Roof pitch
- Number of stories
- Accessibility
- Roofing material
- Amount and type of organic growth
- Complexity of the roof
- Landscaping and property-protection requirements
A smaller, easily accessible roof with moderate staining is a very different project from a large, steep roof with multiple sections and heavy growth.
The best way to determine the actual cost is to have the property evaluated by a professional roof cleaning company.
Will Roof Cleaning Remove Black Streaks?
In many cases, yes. Black algae staining is one of the primary reasons homeowners have their roofs professionally cleaned.
However, results can vary depending on the condition and age of the roof.
Some organic material may change color after treatment and continue breaking down naturally rather than disappearing instantly.
That’s one reason homeowners shouldn’t judge professional roof cleaning by how much water pressure is being used.
Does Moss Come Off Immediately After Soft Washing?
Not necessarily — and that’s important.
Heavy moss and lichen can be firmly attached to roofing materials. Aggressively scraping or blasting them from shingles can cause unnecessary damage.
After proper treatment, remaining organic material may continue to deteriorate and release naturally over time.
A reputable roof cleaning company should explain what you can expect before the work begins.
Can Roof Cleaning Make an Old Roof Look New Again?
Roof cleaning can dramatically improve curb appeal when discoloration is primarily caused by algae and organic staining.
But cleaning cannot repair:
- Missing shingles
- Worn shingles
- Granule loss
- Leaks
- Storm damage
- Structural problems
- Permanent discoloration or deterioration
Professional cleaning and roof repair are two different services.
If the roofing material itself is failing, cleaning isn’t a substitute for repair or replacement.
How Often Should You Have Your Roof Cleaned in South Jersey?
There isn’t a universal schedule.
Some roofs may remain clean for years, while others develop visible staining more quickly because of their surroundings.
Factors include tree coverage, shade, moisture, roof orientation, ventilation, and local environmental conditions.
Instead of automatically cleaning a roof every year, homeowners should have it cleaned when visible organic growth and staining justify it.
Is Roof Cleaning Safe for Plants and Landscaping?
Property protection should be an important part of any professional soft washing service.
Because roof cleaning solutions are designed to treat organic growth, technicians need to pay careful attention to landscaping and other sensitive areas surrounding the house.
Professional procedures can include pre-wetting vegetation, controlling runoff, rinsing plants, protecting sensitive surfaces, and monitoring landscaping throughout the cleaning process.
When comparing South Jersey roof cleaning companies, ask them what they do to protect your property — not just how they clean the roof.
What Time of Year Is Best for Roof Cleaning in South Jersey?
Professional roof cleaning can be performed during much of the cleaning season when weather conditions are appropriate.
The bigger considerations are usually temperature, precipitation, wind, roof conditions, and whether the cleaning solution can be applied safely and effectively.
If you’re preparing to sell your home or simply improving curb appeal, cleaning a heavily stained roof can make a significant visual difference.
Roof Cleaning vs. Roof Replacement
A roof covered in black streaks can sometimes look worse than its actual physical condition.
If the shingles remain in serviceable condition and the problem is primarily organic staining, professional cleaning may significantly improve the appearance without replacing a roof simply because it looks dirty.
However, a roof cleaning company shouldn’t diagnose serious roofing problems as a substitute for a qualified roofer.
If you see missing shingles, active leaks, sagging, significant deterioration, or other signs of damage, have the roof evaluated by an appropriate roofing professional.
Can I Clean My Own Roof?
Roof cleaning presents two separate concerns: working at height and using cleaning chemicals correctly.
Walking on a roof can create a serious fall hazard, particularly when surfaces become wet. Incorrect chemical concentrations or application can also damage property, landscaping, and certain building materials.
For many homeowners, professional roof cleaning is safer and more practical than attempting it themselves.
What Should I Ask a Roof Cleaning Company?
Before hiring someone, ask:
- Do you use high pressure on asphalt shingles?
- What cleaning method will you use on my particular roof?
- Are you insured?
- How will you protect my plants and property?
- What should I expect immediately after cleaning?
- Will moss or lichen disappear immediately or release over time?
- What is included in the quoted price?
Price matters, but the cleaning method and property-protection procedures matter too.
Professional Roof Cleaning in Marlton, Medford, Moorestown & South Jersey
Aqua Boy Power Washing provides professional roof cleaning and exterior cleaning for homeowners throughout South Jersey.
Our service area includes Marlton and Evesham Township, Medford, Moorestown, Cherry Hill, and surrounding South Jersey communities.
If you’re seeing black streaks, algae, moss, or other organic growth on your roof, Aqua Boy can evaluate the property and recommend an appropriate cleaning approach.
When comparing roof cleaning South Jersey companies, look beyond price and consider the cleaning method, property protection procedures, experience, and insurance.
Get a Roof Cleaning Quote
Don’t let a stained roof drag down the appearance of your entire property.
Contact Aqua Boy Power Washing today for a professional roof cleaning estimate in South Jersey.