Comparison of house roof before and after cleaning or replacement, showing the roof on the left with darker, weathered shingles, and the roof on the right with cleaner, newer-looking shingles.

Roof washing in St. Louis, MO

Welcome to HydroBlast Exterior Cleaning, your trusted source for professional roof cleaning in St. Louis, Ladue, Kirkwood, Olivette, and surrounding areas. Over time, roofs develop black streaks, algae, and buildup that not only affect appearance but can also shorten the life of your shingles.

HydroBlast uses a safe soft washing method to remove this buildup without damaging your roof. Our process restores the look of your roof while helping protect it long-term.

Logo for Hydrobast Power Washing featuring a blue circle with a house silhouette, the company name, and a pressure washer nozzle.

Why Choose HydroBlast for Roof Washing?

Safe Soft Washing Method
We use low-pressure soft washing to clean your roof safely. High pressure can damage shingles, so we use the correct method for long-term protection.

Removes Black Streaks & Algae
Those dark streaks are caused by algae growth. We treat and remove it at the source instead of just rinsing the surface.

Extends Roof Life
Removing buildup helps prevent deterioration and can extend the lifespan of your roof.

Long-Lasting Results
Our process targets the root of the problem so your roof stays cleaner longer compared to basic pressure washing.

A picture of cleaning supplies, including a glove, sponge, bucket, and spray bottles.
A splatter of dirt.
A picture of a roof, window, and chimney of a house.
Black and white abstract artistic design.

Our Roof Washing Process

1. Inspection
We evaluate your roof to identify algae, streaking, and buildup.

2. Preparation
We take steps to protect landscaping and surrounding areas before cleaning.

3. Soft Wash Cleaning
Using low pressure and proper cleaning solutions, we safely remove dirt, algae, and buildup from your roof.

4. Final Result
The roof is left clean, with stains removed and surfaces treated to stay cleaner longer.