
Kill the Algae and Organic Growth on Your Delaware Roof

Those dark streaks running down your shingles and the green patches spreading across the north side of the roof are not just dirt. They are living organic growth, and in Delaware’s humid Mid-Atlantic coastal climate, it keeps spreading until the source is killed. A quick rinse only clears the surface for a while, and the growth returns.
Our crew cleans roofs with a low-pressure soft wash that kills the algae, moss, and organic growth at the root using eco-friendly cleaning solutions that are safe for the roof surface. The method works on both shingle and metal roofs, and Ortiz Pro Wash backs the results with a 3-year guarantee, which is something few companies in the area will put on paper.
If your roof is streaked, patchy, or overdue, call us at (302) 228-6599 and we will take a look.


The Roof Types We Clean in Delaware
A shingle roof and a metal roof are not cleaned the same way, so we match the soft wash approach to the material in front of us rather than treating every roof alike.

Asphalt Shingle Roofs
Asphalt shingle is the most common roof in the area, and across Delaware’s humid, coastal climate it is the surface most prone to the black streaking and algae that soft washing is built to remove. We clean it by soft wash only: a blend of eco-friendly sodium hypochlorite and a soap solution applied in a thin, even layer at low pressure, the same gentle method we use when we soft wash a home’s siding. The chemistry does the work, so no high pressure ever goes onto the shingles. Stubborn or heavily affected areas are treated a second time, then rinsed and reactivated for an even result.

Metal Roofs
Metal is handled with a more intensive process than shingle. Power washing is required here, not chemistry alone. If the metal roof has oxidation, oxidation removal is available as an add-on: our crew applies an emulsifier, scrubs, applies additional detergent, and power washes again. Once that is done, an optional protective treatment can be applied to rejuvenate the finish.


What Sets Our Delaware Roof Cleaning Apart
Beyond the finished result, a handful of things separate how our crew works from a quick spray-and-go.

A Soft Wash Method Built for Roofs, Not Blasting
Soft washing kills the growth at the root instead of forcing it off the surface, so the algae and moss do not simply return once the roof dries. It also means your shingles are never put under the kind of pressure that loosens granules and wears a roof out early. Cleaning gently is what keeps your roof intact and keeps the results looking good far longer.

Chemical Safety Built Into Every Roof Job
Every roof clean includes protection for the areas the runoff touches. The NeutroBleach pods we leave in your gutters keep future rainfall from carrying anything harsh into your yard, and the neutralizing plant wash guards the beds and landscaping below the roofline. Your gutters, plants, and yard are looked after by default, not as an upgrade you have to ask for.

We Inspect Your Roof Before We Touch It
Your roof gets a full once-over before a drop of solution goes down, and whatever we find, you hear about it in plain terms. If there is a real structural problem up there, you will hear it straight from us instead of watching us clean over it. You always know the condition of your roof before we start, not after.

Cleaning Solution Matched to the Weather
We adjust the strength of the cleaning solution to the roof and the day’s conditions: a lighter mix on hot days to protect the surface and the plants below, a stronger concentration when cooler weather calls for it. The clean comes out effective without being harsh on anything it touches.

The Material Safety Data Sheet Is Yours for the Asking
If you want to know exactly what is going onto your roof and running off it, just ask. We will hand over a full Material Safety Data Sheet so there is no guesswork about what is being used up there.

How Our Delaware Roof Cleaning Works
From your first call to the final walkthrough, here is exactly how a roof cleaning job runs with our crew.
The Free On-Site Estimate
Reach out by phone or email and we respond quickly, following up by both. We schedule an on-site visit, walk the scope with you, look over the roof, and leave you with a free written proposal covering what we will do and what to expect.
Scheduling and the Heads-Up
Once you approve the quote, we get you on the schedule and send a reminder as the date approaches. An hour before arrival, we let you know we are on the way.
The Pre-Job Roof Inspection
Before anything is applied, the crew inspects the roof for soft spots, missing shingles, and structural concerns, and communicates any findings to you before touching the surface. If something needs saying, we say it honestly and up front.
The Soft Wash Application
We prepare the soft wash solution, sodium hypochlorite plus a soap surfactant, with the ratio adjusted for the temperature that day. On shingle roofs, the solution goes on in a thin, even layer across the whole surface at low pressure. Working from our soft wash system, the crew walks the roof where it is safe to and uses ladders on steep pitches, always in non-slip roofing shoes and harnesses. A metal roof takes a different approach on this step, since it is power washed rather than soft washed, with oxidation removal added when the roof calls for it.
Re-Treating Stubborn Areas and Reactivating
Heavily affected or stubborn spots get a second treatment, then the solution is reactivated with a water rinse so the chemistry finishes the job evenly across the whole roof.
Neutralizing the Runoff and Protecting the Yard
At completion, the crew places NeutroBleach pods in the gutters to neutralize chemical runoff during future rainfalls, and waters the surrounding plants and landscaping with a neutralizing plant wash before packing up. Since runoff often ends up on the surfaces below, many homeowners have us clean the driveway on the same visit while the crew is already on-site.
Walkthrough and Invoice
If you are home, we walk the finished job with you before we go. The invoice follows afterward, or payment is collected on-site if you are there. If anything falls short of what you expected, we want to hear about it and put it right.


Roof Cleaning Pricing in Delaware
Most roof cleans start at a set minimum and rise with the size and complexity of the roof, and every job is quoted after we have seen it in person.
- Roof Cleaning — $500 minimum, up to $1,500–$2,000 for large or complex roofs. Pricing depends on roof pitch and complexity, size, age, level of contamination, and your goal for the job, whether that is a full clean or a gentler treatment that preserves an older roof. A small, simple roof lands near the $500 minimum; large or complex roofs with steep pitches reach the upper end. Most jobs run about 1.5 to 2 hours.
- Military and veteran discount: up to 15% off. Ask about it when you get your estimate.
- Spring seasonal bundle. Booking two services can earn a bundle discount, and roof cleaning counts when it is one of the two. Ask when you get your estimate.


Our Delaware Roof Cleaning Guarantee
3-Year Roof Cleaning Results Guarantee
We are one of the only companies that guarantees it for 3 years. The guarantee is on the results of the clean, meaning the organic growth staying away, and most competitors in the area offer no roof cleaning guarantee at all. We put it on paper because we are confident in the soft wash process.
If You're Not Happy, We Make It Right
If they reach out to us and they’re not happy with the service, we try to either make them happy by going back again and try to make it right. If not, we give them some sort of money back guarantee.

What Customers Say


Frequently Asked Questions
Is soft washing safe for my shingles?
Yes. Soft washing uses low pressure, not the high pressure of a standard power wash, so the shingles are never blasted. The cleaning is done by the solution rather than by force: an eco-friendly blend of sodium hypochlorite and soap is applied in a thin, even layer and left to kill the algae and organic growth at the source. High pressure is what damages and shortens the life of a shingle roof, and the soft wash method is designed to avoid exactly that.
Will my roof be completely clean the day you finish?
Most of the result is visible right away, but soft washing keeps working after we leave as the solution finishes killing the growth. Stubborn or heavily affected areas are treated a second time and reactivated with a water rinse during the job, so the clean comes out even. If anything looks off once the roof has fully cleared, the 3-year results guarantee has you covered, so call us.
Do you inspect the roof before you start?
Yes. Before any solution goes down, the crew inspects the roof for soft spots, missing shingles, and structural concerns. Before we touch a single shingle, our crew inspects the roof for soft spots or structural concerns; we’ll always let you know what we find. If there is a genuine structural problem, we will tell you honestly rather than clean over it, and on jobs with significant soft spots or structural concerns we may defer the work.
When is the best time of year to have my roof cleaned?
Roof cleaning is available year-round. In Delaware’s humid, coastal climate, algae and organic growth build up steadily through the warm, damp months, so there is no wrong season to have it removed; the sooner the growth is killed, the less it spreads. The best time is whenever you notice streaking or green patches taking hold, and we can assess and schedule from there.
Do I need to be home when you clean my roof?
No. Roof cleaning is done entirely from the outside, so you do not need to be home for us to complete the work. If you are home, we will walk the finished job with you before we go; if you are not, we complete the clean and send the invoice afterward.


