Roof Cleaning Cost Seattle

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Average Prices for Roof Cleaning 

Over 10,000 roofs in Western Washington are replaced per year due to neglect. The majority of these roofs are replaced at 40-50% of their life expectancy,according to It’s quite common to see 20 year roofs replaced and needing repairs at 5 years in the Seattle area. All these issues can  be avoided with maintenance.

Roof Cleaning

When you purchased your roof you were given a warranty. In order for it to be valid, your roofing needs maintenance. The American Roofing Manufacturers’ Association gives a step by step guideline on what maintenance is and how it should and should not be done.

ARMA lists [2] cleaning methods that void a warranty for most roofing manufacturers. They cite granule loss as the primary reason these methods should be avoided. These methods are:

  • Power washing  any asphalt shingle roof
  • Using any form of rough agitation when removing moss.

ARMA recommends chemical treatment as their approved method for cleaning asphalt shingle roofing. They have gone as far as to list the chemical blend and ingredients to use. Seattle Roof Cleaners follows the method and instructions for roof cleaning provided by ARMA to the letter.

Roof Cleaning Cost in Seattle

The following are reflective prices for roof cleaning. These are not exact estimates but are very close to what companies nationwide charge for composition roof cleaning. These prices were found by using costhelper,homewyse and

Square Footage of Home Number of Stories Pitch of the Roof Total Cost
1500-2200 1 Flat $260-300
2 Medium $300-350
3 Steep $400-420
Square Footage of Home Number of Stories Pitch of the Roof Total Cost
2200-3500 1 Flat $300-340
2 Medium $340-400
3 Steep $420-500

Here are some previous posts on the cost for other services:

Benefits of Hiring Seattle Roof Care

We are licensed and insured and have cleaned more roofs with the soft wash method than any company in the Seattle-Tacoma area. You will also experience the following additional benefits when hiring us:

  • Professionally trained staff.
  • A one year no moss warranty.
  • A 100% track record in reinstating Homeowners Insurance when cancelled.
  • Keeping your warranty intact by following ARMA guidelines for cleaning.
  • A close working relationship with most insurance providers in the state.

Your homes protection starts from the top down. Maintaining your roof and gutters is a basic requirement as a homeowner.  The average cost to replace a roof is $12,000. The average cost to clean it is 3% of the cost of replacement.  If you have further questions contact me at 425-501-3745. I look forward to answering any questions about roof maintenance you may have and helping you keep your home healthy for years to come.

We provide roof cleaning to the following areas in King County:

Algona, Auburn, Beaux Arts Village, Bellevue, Black Diamond, Bothell, Burien, Carnation, Clyde Hill, Covington, Des Moines, Duvall, Enumclaw, Federal Way, Hunts Point, Issaquah, Kenmore, Kent, Kirkland, Lake Forest Park, Maple Valley, Medina, Mercer Island, Milton, Newcastle,Normandy Park, North Bend, Pacific, Redmond, Renton, Sammamish, Seatac, Seattle, Shoreline, Skykomish, Tukwila, Woodinville, Yarrow Point


One thought on “Roof Cleaning Cost Seattle

  1. Having a new roof can be very expensive. You have to know much will it cost you during your roofing estimate. Aside from that you have to look for a trusted roofing quotes to do your roof and other than that you have to have proper precautions during your roofing installation.

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