Roof Cleaning by ARCM Roofing
Professional roof cleaning that removes algae, moss, and grime to protect your shingles and restore your home's curb appeal.
5 Highlights on Roof Cleaning
Methods Matched to Every Material
Roof cleaning is a maintenance service that removes organic growth and debris before they damage your roofing system. ARCM Roofing cleans asphalt shingles, metal panels, tile, and slate using methods matched to each material.
Soft Wash Technology
We apply low-pressure soft washing with sodium hypochlorite solutions that kill Gloeocapsa magma, the bacteria behind those black streaks on shingles.
Moss and Lichen Removal
Our technicians treat moss colonies and lichen at the root, which prevents regrowth that lifts shingles and traps moisture.
Shingle-Safe Methods
We never blast asphalt shingles with high pressure. That practice strips protective granules and voids manufacturer warranties from GAF, Owens Corning, and CertainTeed.
Gutter and Downspout Clearing
Every roof cleaning includes debris removal from gutters, valleys, and downspouts so water drains the way it should — protecting your fascia from overflow rot.
Preventive Treatments
We install zinc and copper strips on request, which release ions during rainfall and suppress algae growth for years.
A clean roof lasts longer, sheds water better, and keeps your home looking sharp.
Why Choose Us
Why Choose Our Roof Cleaning
Roof cleaning from ARCM Roofing comes backed by trained roofers, not general pressure washing crews. That distinction matters. Our technicians understand shingle construction, flashing details, and membrane systems, so they clean without causing the damage untrained crews leave behind.
We hold full licensing and insurance, including workers' compensation and general liability coverage. Our team follows ARMA (Asphalt Roofing Manufacturers Association) cleaning guidelines on every job, which keeps your manufacturer warranty intact.
When qualified roofers clean your roof, you get more than a wash. You get an expert inspection and honest advice about your roof's condition.
Here's what sets our service apart:
Roofing expertise first
We spot damaged flashing, cracked pipe boots, and deteriorated sealant while we clean, then document everything with photos.
Plant and property protection
We pre-wet landscaping, cover sensitive shrubs, and rinse thoroughly after treatment so your azaleas survive the visit.
Written guarantee
Our algae treatment carries a multi-year warranty against black streak return. If streaks come back within the coverage period, we retreat at no charge.
Straightforward pricing
You receive a firm quote before we start. No surprise charges, no upsell pressure.
Warning Signs
Signs You Need Roof Cleaning
Roof cleaning is overdue when your roof shows visible growth, staining, or debris accumulation. Watch for these five indicators:
Black Streaks Running Down Your Shingles
Those dark stains are Gloeocapsa magma, an airborne algae that feeds on the limestone filler in asphalt shingles. The streaks usually appear on north-facing slopes first, where shade and moisture linger. Left untreated, the algae degrades granules and shortens shingle lifespan.
Moss Growing in Shaded Areas
Moss holds water against your roof deck like a wet sponge. Its root structures work under shingle edges, lift the tabs, and break the water-shedding overlap your roof depends on. Once moss lifts a shingle, wind-driven rain finds its way to the underlayment.
Lichen Patches on Shingle Surfaces
Lichen bonds directly to the granule layer. Scraping it off dry tears granules away with it, which is why professional chemical treatment beats any DIY approach.
Clogged Valleys and Gutter Overflow
Leaves, pine needles, and seed pods collect in roof valleys and gutters. Trapped debris dams water, forces it sideways under the shingles, and accelerates fascia rot. If water spills over your gutter edges during rain, debris has already built up.
Green or Dark Discoloration Below the Roofline
Runoff from a dirty roof carries algae spores and organic material onto siding, soffits, and walkways. Staining below the eaves often signals heavy growth above.
Trees overhead, humid corners, or a roof past five years? Schedule a cleaning every two to three years.
How We Work
Our Roof Cleaning Process
Roof cleaning at ARCM Roofing follows a documented six-step process that protects your roof, your landscaping, and your warranty.
01
Inspection and Assessment
We walk the roof or survey it by drone, identify the growth type, check shingle condition, and note any repairs you should know about.
02
Property Preparation
We pre-soak plants and grass, cover delicate landscaping, move patio furniture, and seal exterior outlets near the work area.
03
Debris Removal
We clear leaves, branches, and buildup from the roof surface, valleys, gutters, and downspouts by hand and with low-pressure air.
04
Soft Wash Application
We apply a calibrated cleaning solution at pressures under 100 PSI. The mix kills algae, moss, and lichen on contact without disturbing granules or sealant lines.
05
Dwell and Rinse
The solution dwells for the required time, then we rinse the roof and all runoff paths with fresh water. Moss and lichen release naturally over the following weeks as rain washes dead growth away.
06
Final Walkthrough
We photograph the results, review the roof's condition with you, and recommend a maintenance schedule based on your tree coverage and climate exposure.
Most residential roof cleaning jobs finish in two to four hours. You'll see black streaks disappear the same day.
Brands We Use
Professional-Grade Equipment and Proven Chemistry
Roof cleaning done right depends on professional-grade equipment and proven chemistry. ARCM Roofing works with trusted brands that deliver consistent results:
Wash Safe Industries
Roof Wash concentrate for shingle-safe cleaning
Spray Nine
Heavy-duty exterior cleaners and degreasers
30 SECONDS
Outdoor algae and mildew treatment formulas
Wet & Forget
Slow-acting moss and lichen inhibitors
Simple Green
Biodegradable pre-treatment solutions
Honda
Reliable pump engines for our soft wash rigs
General Pump
Precision pressure regulation equipment
Kuriyama
Chemical-resistant hoses and delivery lines
Werner
Ladders and fall protection equipment
DeWALT
Blowers and job site tools
Safety drives every equipment choice we make. Our crews wear OSHA-compliant harnesses, anchor to rated tie-off points, and use non-slip footwear on every roof. We handle all cleaning solutions according to manufacturer safety data sheets, neutralize runoff, and keep pets and family members clear of treated areas until surfaces dry.
FAQs
FAQs About Roof Cleaning
›What is roof cleaning?
Roof cleaning is the removal of algae, moss, lichen, and debris from your roofing surface using low-pressure washing and specialized cleaning solutions. It restores appearance and stops organic growth from damaging shingles.
›When should I clean my roof?
Clean your roof when black streaks, moss patches, or heavy debris appear. Most homes need service every two to three years. Spring and fall offer ideal conditions since moderate temperatures help cleaning solutions work effectively.
›Why does roof cleaning matter?
Algae eats the limestone in asphalt shingles, and moss lifts shingle tabs to let water in. Regular cleaning extends roof life, preserves warranties, and prevents repairs that cost far more than maintenance.
›How does soft washing work?
Soft washing applies a cleaning solution at pressures below 100 PSI. The chemistry kills growth at the root rather than blasting it off, which protects granules and sealant bonds.
›Can roof cleaning damage my shingles?
Professional soft washing won't. High-pressure washing will. Pressure washers strip granules, break sealant strips, and force water under shingles, which is why manufacturers warn against them.
›Does roof cleaning remove black streaks the same day?
Yes. Algae streaks disappear during the initial treatment. Moss and lichen die immediately but release gradually over several weeks as rain carries the dead material away.
›How much does roof cleaning cost?
Pricing depends on roof size, pitch, and growth severity. ARCM Roofing provides free written estimates, and most residential cleanings cost a fraction of premature roof replacement.
Related Services
Black Streaks Gone the Same Day
2–4 hour service · Multi-year algae warranty · Landscaping protected