Roof Cleaning & Soft Wash in Hickory, NC
manufacturer-recommended low-pressure soft wash kills algae, lichen, and moss at the root — without damaging shingles. 5-year warranty included.
What's Really Growing on Your Roof — And Why It Gets Worse
The black streaks and dark patches on asphalt shingles are not dirt. They are a living organism called Gloeocapsa Magma — a cyanobacteria that spreads from spore to colony to full coverage in a predictable three-stage pattern. The American Roofing Manufacturers Association has specifically recommended soft washing as the only safe cleaning method for asphalt shingles. Pressure washing voids manufacturer warranties and drives damaging granule loss.
Invisible Stage
Spores land on shingles and begin feeding on the limestone filler in asphalt granules. The roof looks clean. No visible staining yet — but the colony is growing.
Black Streak Stage
The cyanobacteria colony grows large enough to produce visible dark streaks and patches. Most homeowners notice the problem here. The growth is accelerating — shingles are losing granules at an increasing rate.
Lichen & Moss Stage
Lichen and moss establish on the weakened shingle surface. Their root-like structures (rhizines) dig into the granule layer, causing physical damage. This stage is the most expensive to address and can shorten roof life significantly.
After treatment: Black streaks lift immediately — often same-day visible improvement. Lichen and moss turn white and detach on their own over 6–8 weeks as the biocide works through the root structure. No second visit needed.
Why We Never Pressure Wash a Roof
Manufacturer-Required Method
Shingle manufacturers explicitly state that low-pressure soft washing is the only cleaning method that does not void asphalt shingle warranties. Pressure washing voids your coverage.
Kills at the Root
Our professional-grade biocide solution penetrates the algae colony and kills it at the cellular level. The organism cannot regrow from dormant spores left behind.
5-Year Warranty
We back every roof cleaning with a 5-year warranty against algae regrowth. If algae returns within 5 years, we return and retreat at no charge.
Extends Roof Life
Unchecked algae and lichen accelerate granule loss, which reduces your roof's UV protection and shortens its service life. A clean roof lasts longer.
16 Years of Experience
We have cleaned thousands of roofs throughout Catawba County and understand the specific species that thrive in the Hickory climate.
Free In-Person Estimate
We inspect your roof from the ground and assess coverage level, shingle type, and growth stage before quoting. No guessing on price.
Roof Types & Surfaces We Service
Roof Cleaning — Frequently Asked Questions
Does soft washing damage my shingles?
How long until the lichen and moss fall off?
What does the 5-year warranty cover?
Is the cleaning solution safe for my landscaping?
How often should a roof be cleaned?
Hickory Homeowners on Our Work
“Great company! Jeff and his team have been taking care of my home for 5 years. Reasonably priced, ALWAYS on time and my home always looks wonderful!”
— Carol Berry, via Google
“This is the third time we have used HydroClean and each time it has been a great experience. Will use again!”
— Thomas Frost, via Google
“Casey came out to do my home today and done a phenomenal job! He was very kind and informative on what he would be using to clean my home.”
— Amber Buelin, via Google
4.8 ★ average across 264 Google reviews · Read all reviews →
Backed by Our 5-Year Limited Warranty
5-Year Limited Warranty
Anything that comes back in year one, we re-clean free. In years two through five you get 50% off a re-clean — so keeping your roof clean stays affordable and it never gets bad again.
We stand behind our work. We're not a fly-by-night outfit — when you call, we answer; when something comes back, we make it right without a fight. And unlike the companies that vanish, we'll still be here five years from now.
Steeple and Tile Roof Cleaning in Hickory, NC
Recent Roof Cleaning & Soft Wash in Hickory, NC
Real jobs from our team — licensed, insured, and locally owned since 2010.
Ready to Restore Your Roof?
Serving Hickory, Newton, Conover, Lenoir, and all of Catawba County. Free in-person estimates — we assess your roof from the ground before quoting.