Family owned · Owner operated Vancouver & Clark County, WA

Vancouver & Clark County, Washington

Roof & moss cleaning.

Low-pressure roof cleaning and moss treatment, with the care your shingles deserve.

Licensed, bonded & insured
Tim, the owner, on every job.
Roof & moss cleaning work by Cascade Armor
From the Cascade Armor photo bookLocal work. Our own photos.
Before and after roof & moss cleaning by Cascade Armor
Roof & moss cleaning · Before & after

From a Cascade Armor customer

Really happy with how everything turned out! Communication was good, the work was done when promised and the difference afterward was impressive to say the least, wouldn't hesitate to recommend cascade armor to anyone looking for exterior cleaning!!

Mark M.Google review · Approx. June 2026

★4.5 / 534 Google reviews

The scope

Know exactly
what’s included.

A green roof belongs in a garden, not above your living room. Clark County’s damp months give moss plenty of time to settle between shingles. Cascade Armor removes buildup carefully and treats the roof with a low-pressure approach. You get a clear plan for your roof, without a high-pressure blast across the shingles.

We confirm the surfaces, access, and price with you before work begins.

  • 01Roof material and access assessment
  • 02Low-pressure cleaning approach
  • 03Moss removal scope tailored to condition
  • 04Treatment discussed before work begins
  • 05Care around nearby surfaces and landscaping
  • 06Before-and-after documentation on request
Outside the standard scope

Roof repairs, re-roofing, and insurance approval are not included. Gutter work is quoted separately unless your written scope includes it.

Plan your project

A starting point
for the budget.

The final price depends on size, condition, and access. Send your project details for a written quote.

Compare cleaning costs

Roof moss removal and treatment

$350–$800

Local market planning range, not a Cascade Armor quote.

Get a quote for my property

Before we begin

The details
that matter.

Different materials need different care. Here’s how we approach roof & moss cleaning.

01Moss needs more than a quick rinse.+

Moss holds moisture against the roof and can grow along shingle edges. The shady side of a house often stays damp after the sunny side dries. Leaves and fir needles can make those wet pockets harder to spot. We look at the roof material, pitch, buildup, and access before proposing work. That assessment matters more than a one-size-fits-all cleaning package. Tell us about previous repairs, leaks, or fragile areas when you request a quote.

02A gentle approach, chosen for your roof.+

Composition shingles need a different approach from concrete patios. We use low-pressure cleaning and treatment rather than pressure-washing asphalt shingles. Loosened debris and established moss require different handling, so the sequence depends on condition. Treatment and visible removal are not always the same thing: treated moss may take time to release. We explain what to expect at completion and what may change with subsequent weather. Cedar, tile, and metal roofs need a material-specific assessment before we recommend a method.

03A plan for the home around the roof.+

Your landscaping, gutters, paths, and outdoor belongings are part of the job conversation. Let us know about delicate plants, pets, ponds, rain barrels, or unusual drainage. We discuss site preparation before starting. Move outdoor cushions and keep pets away from the work area until it is ready to use. If water drains into a collection system, tell us before treatment. We want the cleaning plan to account for the whole property, rather than just the surface in the photograph.

04Have a letter about roof moss?+

Send us the relevant cleaning request and deadline, leaving out policy numbers or unrelated personal information. We can discuss before-and-after photographs and a completion note as part of the scope. Your insurer decides which documents it accepts and whether cleaning meets its requirements. Cleaning is not roof repair and cannot certify a roof’s remaining life. If damaged shingles or a leak are your main concern, have the roof assessed by an appropriate roofing professional.

YOUR QUESTIONS

Before you book.

Ask us something else
Will roof cleaning damage my shingles?+

We do not pressure-wash asphalt shingles. The method depends on roof condition, material, and access. Fragile or damaged areas need assessment before work.

How long until the moss is gone?+

Treatment and removal work differently. Some moss is removed during cleaning; treated growth can release over subsequent weeks and rain. Ask what your specific service includes.

Is treatment safe around plants and pets?+

Tell us about plants, pets, ponds, and water collection. We discuss preparation and product-specific precautions before treatment. Keep people and pets clear during the work.

Do you need to walk on the roof?+

It depends on access, roof pitch, and condition. We assess the property first and explain how the work can be done.

Can you provide photos for my insurer?+

Ask for before-and-after photos and a completion note with your quote. Confirm the documentation your insurer requires before booking.

How often should I treat roof moss?+

Shade, nearby trees, and roof condition affect recurrence. An annual check can help catch new growth. We can discuss a maintenance interval after seeing your roof.

What happens if it rains?+

Conditions affect safe access and treatment. We confirm weather suitability and contact you if the appointment needs to move.

Let’s talk about your property

Tell us what
needs cleaning.

Share your address and the areas you’d like us to look at. We’ll take it from there.

Get my free quote (360) 975-2120Serving Vancouver and Clark County, WA
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