01 / HOUSE WASHING
Bring the fresh look back.
Soft washing to remove dirt and organic buildup from siding. We choose the cleaning approach for the surface.
Ask about house washing →ROLLA, MISSOURI & SURROUNDING COMMUNITIES
What Causes Black Streaks on Roofs in Missouri?
Those dark streaks running down a roof are often caused by organic growth such as algae, not simply dirt. Missouri heat, humidity, shade, and moisture can create conditions where roof staining becomes more noticeable over time.
Locally owned in Rolla · Monday–Friday, 8 AM–5 PM
EXTERIOR CARE, FROM TOP TO BOTTOM
01Wash.
Homes, roofs, concrete & windows.
02Restore.
Decks, fences & weathered wood.
03Enjoy.
More time enjoying your outdoor space.
See our work on Facebook ↗LOCAL WORK, RIGHT HERE IN MISSOURI
See Prowash in action.
WHAT WE DO
Why Roofs Develop Black Streaks
Roof staining can develop gradually, especially on sections that stay damp or receive less direct sunlight. A proper soft-wash treatment is designed to treat organic growth without relying on the kind of high pressure that can be inappropriate for shingles and other roofing materials.
02 / ROOF CLEANING
Care starts at the top.
Cleaning for shingle, metal, and wood shake roofs. Tell us about the stains and buildup you want addressed.
Ask about roof cleaning →03 / CONCRETE CLEANING
A cleaner way home.
Driveways, patios, sidewalks, and other concrete for homes and commercial properties. Ask about larger exterior cleaning jobs, too.
Ask about concrete cleaning →04 / GUTTERS & WINDOWS
The details make a difference.
Gutter cleaning, window cleaning inside and out, and screen cleaning. Ask about combining services for your property.
Ask about gutters & windows →05 / DECKS & FENCES
Let the wood shine again.
Deck and fence cleaning, wood restoration, staining, and sealing for outdoor living spaces.
Ask about wood restoration →06 / MORE WAYS TO HELP
Have another project?
Ask about commercial exterior cleaning, dryer vent service, solar panels, dock roof cleaning, painting, lawn care, and other odd jobs. Tell us what you have in mind.
Tell us about your project →A LOOK AT THE DIFFERENCE
Real work. A fresh start.
Deck cleaning and restoration can bring tired outdoor wood back to life. Watch this short wood restoration video.
Real jobs • real results
Photo gallery
A look at the homes, decks, tanks, and commercial spaces we care for around Missouri. We’ll keep adding photos from new jobs throughout the year.
Before cleaning
Built-up grime and weathering on the tank exterior.
After cleaning
A brighter, cleaner finish on this large-scale job.
Before & after
Soft washing lifts away dirt and brings siding back to life.
Before restoration
Weathered boards before wood restoration.
After restoration
Restored wood with a clean, warm finish.
Full exterior before & after
A dramatic siding cleanup on a full home exterior.
Another before & after
A strong siding transformation from a Prowash Missouri job.
Wood fence finish
A long run of fencing with a clean, even finish.
Concrete cleaning in progress
Surface cleaning at a commercial loading area.
Home exterior wash
A clean, bright finish on this home exterior.
Outdoor deck project
A deck and covered patio ready for time outside.
Patio furniture
Outdoor tables and chairs cleaned for a fresh season.
Solar panel cleaning
Removing buildup from a rooftop solar array.
YOUR LOCAL EXTERIOR CLEANING BUSINESS
A familiar face.
A better-looking place.
Prowash Missouri is a family business. I’m Louis Coatney, and my wife helps with painting and staining projects. Our son Remington helps on wash projects. We’re proud to serve Rolla and nearby communities with exterior cleaning for homes, businesses, and outdoor spaces.
From a house wash or gutter cleaning to deck staining and concrete, we’ll talk through what your property needs and find a time that works.
Get to know Prowash Missouri on Facebook ↗CLOSE TO HOME
Rolla & the towns around it.
Based in Rolla, we serve nearby communities including St. James, Cuba, Sullivan, Waynesville, St. Robert, Salem, Jefferson City, Osage Beach, Camdenton, Sunrise Beach, Lake of the Ozarks, and surrounding towns. Contact us with your address to confirm availability.
RollaSt. JamesCubaSullivanWaynesvilleSt. RobertSalemNearby communitiesJefferson CityOsage Beach · Camdenton · Sunrise BeachLake of the Ozarks
LET'S TALK ABOUT YOUR PROPERTY
Request a Roof Cleaning Estimate
Tell us what needs attention, where you're located, and when you'd like the work done.
From Roof Streaks to the Right Cleaning Method
If the dark streaks are algae or other organic growth, the next step is a roof-appropriate low-pressure treatment—not aggressive blasting.
Roof cleaning in Rolla · Soft washing in Rolla · Request an estimate
GOOD TO KNOW
Common questions
Quick answers about choosing a service and getting an estimate.
Call 833-465-9274What causes black streaks on roofs?
Black roof streaks are commonly associated with algae and other organic growth that thrive in damp, shaded conditions.
Why are some roof slopes worse than others?
Areas that stay shaded or hold moisture longer can develop staining faster than sunny, fast-drying roof sections.
Should black streaks be pressure washed off?
High pressure is generally not the preferred method for roof cleaning. A low-pressure treatment is more appropriate for many roofing materials.
Will roof cleaning make streaks disappear immediately?
Results depend on the type and severity of growth. Some organic staining may continue to lighten after treatment.
Can metal roofs develop organic staining too?
Yes. Metal and other roof surfaces can collect algae, mildew and environmental buildup and need a surface-appropriate cleaning method.
Does shade from trees affect roof staining?
Yes. Shade can slow drying and create conditions where organic growth becomes more noticeable.
How do I get a roof cleaning estimate?
Use the estimate request form or call 833-465-9274 and tell us about the roof material and staining you are seeing.