Alexander's Window Cleaning & Pressure Washing of Prescott
A tile roof on a Prescott, Arizona home with one half soft washed clean and the other still streaked
Our Services

Roof Cleaning In Prescott Valley, AZ

Black streaks, moss and algae soft washed off shingle and tile roofs across Prescott Valley and Prescott with cleaner and a gentle rinse, never high pressure on the roof.

Never high pressure on a roof

A pressure washer strips the granules off shingles and lifts tiles. Roof cleaning is a soft wash, and only a soft wash.

The dark streaks on a roof are algae, and on the shaded north slopes of Prescott homes moss gets a start under the pines. Both hold moisture against the roof and make a house look older than it is. The fix is cleaner applied at low pressure, left to work, and rinsed off gently, so the growth is killed and carried away without damaging shingles or tiles.

Roof soft washing is one of the services Phil offers alongside house washing, and the two are usually done on the same visit. Gutters are checked for what the wash sends down, and landscaping below the roofline is rinsed before and after.

Shingle roofs

Asphalt shingles cleaned without losing their granules.

  • Black algae streaks
  • Moss on the shaded slopes
  • Pine needle buildup cleared
  • Low pressure rinse only
  • Valleys and edges detailed

Tile roofs

Concrete and clay tile, the roof on most newer Prescott Valley homes.

  • Algae and lichen
  • Dust and red dirt film
  • No tiles lifted or cracked
  • Ridge and hip lines
  • Flat and S tile

Landscaping protected

What comes off the roof lands somewhere.

  • Plants rinsed before and after
  • Gutters flushed afterward
  • Runoff managed
  • Biodegradable cleaners
  • Patio furniture moved or covered

Done safely

Roof work is the one place insurance matters most.

  • Fully insured, liability and workers’ comp
  • Worked from the ground where possible
  • Proper roof access when not
  • Dry conditions only
  • Free estimate first

Why Yavapai County Property Owners Call Alexander's

A family company that has cleaned glass in the Prescott area since 1970.

Soft wash only

The cleaner does the work; the rinse is close to garden hose pressure.

Fully insured

Liability and workers’ compensation, with a certificate available.

The right equipment

Low pressure soft wash gear on the same van as the pure water system.

One visit

Roof, house, gutters and windows can all be done in a single trip.

Roof Cleaning By Location

We provide roof cleaning across Prescott Valley, Prescott, Chino Valley and Dewey-Humboldt.

What Our Customers Say

Real reviews from Prescott area customers, in their own words.

Frequently Asked Questions

What are the black streaks on my roof?

Algae, most often, growing where the roof stays shaded and damp. It feeds on the limestone filler in shingles and holds moisture. A soft wash kills it and rinses it away.

Will roof cleaning damage my shingles?

Not with a soft wash. The damage people associate with roof cleaning comes from pressure washers blasting the granules off. We never put high pressure on a roof.

Can you clean a tile roof?

Yes. Concrete and clay tile are cleaned the same way, with cleaner and a gentle rinse, and we are careful about where weight goes so no tiles are cracked or lifted.

How long does a roof stay clean?

Usually several years. Shaded slopes under pines will show growth sooner than a roof in full sun, and a yearly look tells you when it is time again.

Do you clean the gutters afterward?

We flush what the wash sends down and clear anything that collects. A full gutter cleaning can be added to the same visit.

A water fed pole cleaning the tall windows of a wood sided Prescott home
The Alexander’s van at a Prescott Valley home

Need Roof Cleaning In Prescott Valley?

Get started for freeGet a free quote Call or text (928) 237-4189, or send the form, and we will get back to you with a free estimate.