Roof Cleaning Evansville | Safe Soft Washing
Protect your roof and restore its appearance with professional soft washing from Thompson's Pressure Washing. We safely remove black streaks, algae, moss, and lichen from all roof types without damaging your shingles or voiding your warranty. Serving Evansville, Newburgh, Princeton, and the entire Tri-State area.
The Smart Choice
Why Professional Roof Cleaning Matters
Your roof is one of the most expensive components of your home. Algae, moss, and lichen don't just look bad -- they actively damage your shingles and shorten your roof's lifespan. Professional roof cleaning in Evansville protects your investment and saves you thousands compared to premature roof replacement.
Avoid Costly Roof Replacement
A new roof costs $8,000 to $15,000 or more. Regular soft washing extends your roof's life by years, saving you thousands. Roof cleaning is a fraction of the cost of replacement.
Restore Curb Appeal Instantly
Black streaks and green algae make even newer roofs look old and neglected. Our soft washing process restores your roof's original color and makes your entire home look better.
Safe, Low-Pressure Method
We never use high-pressure water on roofs. Our soft washing technique uses gentle, low-pressure application with biodegradable cleaning solutions that kill algae at the root without harming shingles.
Improve Energy Efficiency
Dark algae stains absorb more heat from the sun, increasing your attic temperature and cooling costs. A clean roof reflects sunlight properly, helping keep your home cooler in Evansville's hot summers.
Prevent Structural Damage
Moss and lichen trap moisture against your shingles, leading to rot, leaks, and wood damage underneath. Removing these organisms protects your roof deck and prevents expensive repairs.
Increase Property Value
A clean, well-maintained roof boosts your home's value and makes a strong first impression. If you're selling, roof cleaning is one of the best returns on investment for exterior improvements.
How It Works
Our Soft Washing Process
Unlike traditional pressure washing, soft washing is the manufacturer-recommended method for cleaning roofs. We use specialized equipment and eco-friendly solutions designed specifically for safe, effective roof cleaning in Evansville and the surrounding area.
Inspection & Assessment
We inspect your roof from the ground to assess the type and severity of staining, identify your roofing material, and check for any existing damage. We then provide a free, transparent quote with no hidden fees.
Protect Surrounding Areas
Before we begin, we pre-wet all plants, landscaping, and surfaces below the roofline. We take care to protect your property, including siding, windows, and garden beds from any runoff.
Apply Soft Wash Solution
Using low-pressure equipment, we apply our biodegradable cleaning solution across the entire roof surface. This solution kills algae, moss, lichen, and bacteria at the cellular level without scrubbing or high-pressure water.
Rinse & Final Inspection
We gently rinse the roof with low-pressure water, washing away all dead algae and debris. After a final walk-around inspection, we rinse all surrounding landscaping again. Your roof looks like new.
All Roof Types
Roof Types We Clean
Our soft washing process is safe and effective on every type of roofing material found on homes and businesses in the Evansville area. Each roof type requires specific techniques and solutions, and our team is trained to handle them all.
Asphalt Shingles
The most common roofing material in Evansville. Asphalt shingles are especially vulnerable to algae growth because the limestone filler provides a food source for Gloeocapsa magma. Soft washing is the only cleaning method recommended by manufacturers like GAF, Owens Corning, and CertainTeed. High-pressure washing strips away protective granules and voids your warranty.
Metal Roofing
Metal roofs are durable and long-lasting, but they still accumulate algae, oxidation, and environmental staining over time. Our soft washing process safely removes buildup without scratching the finish or damaging protective coatings, keeping your metal roof looking sharp and performing at its best.
Tile Roofing
Clay and concrete tile roofs are beautiful but prone to moss, algae, and lichen growth in their textured surfaces. Our low-pressure technique cleans between tiles and removes stubborn growth without cracking or loosening tiles. We restore the color and beauty of your tile roof safely.
Cedar Shake
Cedar shakes require the most delicate approach. High pressure destroys wood fibers and accelerates deterioration. Our soft washing gently removes moss, mildew, and algae while preserving the natural character of the wood. We can also apply treatments to help prevent future growth and extend the life of your cedar roof.
Understanding the Problem
What Causes Roof Staining?
If you've noticed dark streaks, green patches, or other discoloration on your roof, you're not alone. The humid climate in Evansville and the Tri-State area creates ideal conditions for biological growth on roofs. Here's what's actually happening and why it matters.
Algae (Black Streaks)
The dark black streaks running down your roof are caused by Gloeocapsa magma, a blue-green algae that feeds on the limestone in asphalt shingles. It spreads across your roof through airborne spores and thrives in Evansville's warm, humid summers. Beyond being unsightly, algae causes shingles to absorb more heat, increasing cooling costs and accelerating shingle deterioration.
Moss
Moss appears as thick, green, spongy growth, usually on north-facing slopes and shaded areas. Unlike algae, moss has roots that burrow under and lift shingles, creating gaps where water seeps underneath. Left untreated, moss causes leaks, rot, and serious structural damage. Homes near trees and in wooded neighborhoods in the Evansville area are particularly vulnerable.
Black Streaks & Staining
Besides algae, roof staining can come from pollution, tree sap, tannin runoff from leaves, and oxidation from metal flashing. These stains build up over years and make your roof look decades older than it actually is. Our soft washing solutions are formulated to target and remove all types of organic and environmental staining.
Lichen
Lichen is a combination of algae and fungus that forms a crusty, light-green or gray growth on roofing surfaces. It's the most stubborn type of roof staining and bonds deeply to shingle material. Lichen is extremely difficult to remove with DIY methods. Our professional-grade soft wash solutions penetrate and kill lichen at the root, removing it completely without damaging your roofing material.
Our Work
Before & After Roof Cleaning Results
See the dramatic difference professional roof cleaning makes. These are real results from real projects across the Evansville and Tri-State area.
Common Questions
Roof Cleaning FAQs
Is soft washing safe for my roof?
Yes. Soft washing uses low-pressure water combined with specialized biodegradable cleaning solutions to safely remove algae, moss, and stains without damaging shingles, tiles, or metal roofing. It is the cleaning method recommended by roofing manufacturers such as GAF and CertainTeed. Unlike high-pressure washing, soft washing will not strip granules from your shingles or void your warranty.
How much does roof cleaning cost in Evansville?
Roof cleaning costs vary based on the size, pitch, and condition of your roof. Most residential roof cleaning projects in the Evansville area start at $299. We provide free, no-obligation quotes so you know the exact price before any work begins. Call us at (618) 384-8166 for your free estimate.
How often should I have my roof cleaned?
We recommend having your roof professionally cleaned every 2 to 3 years, depending on the amount of shade and tree coverage around your home. Homes with heavy tree coverage or north-facing roof slopes may need cleaning more frequently. Regular cleaning prevents algae and moss from causing long-term damage.
Will roof cleaning damage my shingles or void my warranty?
No. Our soft washing method is the manufacturer-recommended approach for cleaning roofs. High-pressure washing can void warranties and damage shingles, which is why we exclusively use low-pressure soft washing techniques. In fact, many manufacturers recommend regular cleaning to maintain your warranty coverage.
What are the black streaks on my roof?
Those black streaks are caused by Gloeocapsa magma, a type of blue-green algae that feeds on the limestone filler in asphalt shingles. It thrives in Evansville's humid climate and spreads across your roof over time. Soft washing kills and removes this algae completely, restoring your roof's original appearance.
How long does a roof cleaning take?
Most residential roof cleaning jobs take between 1 to 3 hours depending on the size, pitch, and level of staining. We complete most projects in a single visit so you can enjoy a clean roof the same day.
Do I need to be home during the roof cleaning?
No, you do not need to be home. As long as we have access to a water spigot and the areas around your home, we can complete the service. We will send you before and after photos when the job is done so you can see the results.
Can roof cleaning extend the life of my roof?
Absolutely. Algae, moss, and lichen retain moisture and accelerate shingle deterioration. Regular soft washing removes these organisms and can extend the life of your roof by several years, saving you thousands compared to a premature roof replacement. Think of it as preventative maintenance for your biggest investment.
Service Area
Roof Cleaning Across the Tri-State Area
Thompson's Pressure Washing provides professional roof cleaning and soft washing services throughout an 80-mile radius from Grayville, IL. We proudly serve the following communities and surrounding areas.
Pair your roof cleaning with house washing or gutter cleaning for a complete exterior transformation. Ask about our bundled service discounts when you call.
Get Your Free Roof Cleaning Quote
No obligation. We respond within 24 hours with a transparent, all-inclusive price.