Gutter Cleaning Cost in Seattle

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Gutter Cleaning is Essential to a Home’s Health


Having your gutters cleaned by Seattle roof cleaners is an inexpensive task. The benefits are many:

  • Safety trained professionals.
  • Working off ladders is dangerous.
  • The task is relatively inexpensive.
  • Your home depends on a bi-yearly gutter cleaning.

Protect your home and yourself by letting trained professionals take care of a  job that is very dangerous when the right equipment and safety gear is not used.

Most homes gutters can be cleaned for under $170 dollars. For the amount of work and the time it takes to get to and from the residences’ location the price is more than fair! Not to mention the safety issues and liability that a gutter cleaner in Seattle must have.

Don’t let another day go by. Those overflowing gutters are serious safety issues and can wreak havoc to the general structural integrity of your entire home. Heres a short list of problems that can happen when you don’t clean your gutters:

  • Rotted fascia boards.
  • Damaged foundations from overflowing gutters leaking into walls.
  • Drywall repairs.
  • Insect intrusions, bugs love moisture.
  • Damaged driveways and walkways. From Gutters? YES! misdirected rain water can flow anywhere!
  • Landscape Erosion. Clogged gutters will direct water where it’s not supposed to go!

In summary, we aren’t trying to paint a horror show. These problems and many more are avoided for the cost of your Starbucks coffee bill. It may not seem like a big deal but those gutters were originally placed on your home to do a job:

Reflect rainwater away from your home.

When they aren’t allowed to work as designed serious structural issues begin happening.

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Roof Moss Removal Seattle

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Removing Moss from Roofs

The moss on your roof has been introduced to your substrate by airborne spores that periodically pollinate their surroundings. In high winds these spores travel. Regardless of where it came from we are going to be discussing how it spreads, what damages it causes to roofing materials and the proper way to remove it.

How Moss Grows

Moss spreads thru its spores, it has no vascular system. It is of the plant family Bryophytes. Bryophytes absorb water through their leaves. It receives nutrients by absorbing it through photosynthesis. Since it has no vascular system it must find a damp place to live. Roofing makes a very great abode, as it is one of the dampest places on a home. Seattle has an average of 150-days of rain a year, making Seattle one of the rainiest places in America. The combination of location and environment make roof moss in Seattle, a normal occurrence.

Damage to Roofing

Moss grows in mats 1-3 inches tall. These mats act as a dam and do not allow water to flow freely down your roofing into your gutters. Water begins to pool at portions of your roof affected with moss growth. The shingles underneath aren’t allowed to naturally repel water or breathe.  In a very short amount of time, when left untreated, moss will completely destroy a roof.

Methods of Removal

There are several methods of removal that are practiced by roof cleaning contractors in Seattle:

  • Power washing
  • Manual Scrubbing with a  stiff bristle brush
  • Chemical Treatment

Chemicals to Kill Moss

No method is complete without the use of a biocide after the cleaning has been done. The preferred chemicals to kill moss are:

  • Zinc Powder
  • Copper Powder
  • Sodium Hypochlorite

Roof cleaning contractors in Seattle know that cleaning a roof, without administering of moss inhibiting chemicals is likely to cause moss to return very rapidly. When applying chemicals the manufacturer’s directions for proper application should be observed. Improper application or insufficient use of chemicals when mixing will cause damage to the roofing material or dilution to potency not suitable for killing moss.

Conclusion

Moss is a very destructive force to roofing materials. Proper application of moss killing chemicals can only be administered by an experienced roof cleaner in Seattle. There are several methods of roof cleaning but all must end with the application of moss killing chemicals.

We provide roof moss removal services to the following cities in Washington State:

Alderwood- Ames Lake- Arlington -Auburn- Ballard- Bellevue-Belltown-Bothell-Bridle Trails-Brier-Burien-Covington Crossroads -Des Moines-Edgewood-Edmonds-Everett-Evergreen-Fall City-Federal Way-Ferndale-Granite Falls-Hunts Point-Issaquah-Issaquah Highlands-Juanita-Kenmore-Kent-Kingsgate-Kirkland-La Conner-Lake City-Lake Forest Park-Lake Goodwin-Lake Stevens-Lynnwood Madison Park-Magnolia-Maltby-Maple Valley-Marysville-Medina-Mercer Island-Mill Creek-Monroe-Mountlake Terrace-Mukilteo Newcastle-North Bend-Overlake-Parkland-Puyallup-Rainier Valley-Redmond-Renton-Rose Hill-Sammamish-Sand Point-SeaTac Seattle-Sedro-Woolley-Shoreline-Smokey Point-Snohomish-Snoqualmie-Spanaway-Stanwood-Tacoma-Totem Lake-Tukwila -University Place-White Center-Woodinville-Yarrow Point

Methods of Roof Moss Removal in Seattle

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Over 10,000 roofs are replaced per year due to water intrusion, in the Seattle area. Roof Moss is a major contributing factor to the number of roof replacements. Moss grows in patches 1-3 inches wide. Homes with infrequent sunlight or under foliage are the most prone to moss growth. Large patches of moss trapping moisture in 1-3 inch mats create water dams that then begin pushing water underneath roofing substrate. The roofing material is never left to dry out.The consequences are:

  • Rot.
  • Mildew
  • Buckling

What is Roof Mold?

Bryophytes are soft plants that grow in mats and clumps. They reproduce through periodic release of airborne spores. They have no vascular system to feed themselves as plants with roots do. Bryophytes therefore grow where moisture is prevalent. The Seattle region with between 72-88 days of sunshine a year is an inviting environment for moss growth. Our lack of sun is the reason moss grows so heavily in the area. With no ability to control our amount of sunshine, we are left to do periodic maintenance.

Differing Methods of Moss Control

You can speak to any 2 roof cleaners in the country and the proper method for roof cleaning and moss control is always up for debate. There are standard methods of moss control practiced around the country these methods are:

  • Power washing to remove moss.
  • The use of zinc strips.
  • Chemical treatment.

Power Washing 

Pressure washing without adequate chemical treatment afterwards is the least effective method in killing moss. Without the use of a moss inhibiting chemical you’re left with a roof that will need another cleaning almost immediately. There have been several studies done on the damage a power washer can do to asphalt granules.  ARMA [Asphalt Roofing Manufactures Association] recommends not using a pressure washer on asphalt shingles for roof moss removal. Their primary concern is the loss of granules. Although not as good on asphalt shingles, a power-washing is probably the only effective way of properly cleaning cedar and metal roofs.

The metal roofing vent prevents moss growth.

Zinc Strips

Zinc Strips are effective means of containing moss growth. Due to the cost and the amount of coverage required to kill moss, many times it is unfeasible to use this method. For Zinc strips to successfully control moss growth they must be placed every 3 feet from the tip of the roof to the gutter line. This method is very unsightly and many homeowners do not like the look of Zinc strips going down their entire roof line. The picture above shows CLEARLY, that zinc and metal DO stop moss from growing. Where the metal vents are present; no moss is growing directly beneath them.

To effectively use zinc strips:

  1. Two inches of zinc should protrude the asphalt shingle.
  2. They should start at the ridge cap and end 3 feet above the gutter.

Chemical Treatment of Moss

Chemical treatment, also called soft wash roof cleaning, in our opinion, is the most effective means of moss control. Using the right chemicals, completely kills all moss spores and prevents new moss from rebuilding. Most soft wash roof cleaner’s offer warranties of 1-5 years, they are secure in offering these warranties because they know that it took years for this moss to grow on your roof and it will take years for it to grow back, provided the right chemicals are used in strong enough doses.

The decision on what method is the right method for roof cleaning in Seattle is always up for debate. PWNG uses the chemical soft washing method to soundly control moss. We stand by our service and offer a 1-year warranty with every roof cleaning in Seattle. We look forward to any comments or questions our readers might have and we welcome an open discussion on roof cleaning.

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 roofcleaners.org. 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 localprice.com

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

Roof Cleaning FAQ

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PWNG ROOF CLEANING FAQ [frequently asked questions]

 

 

 

Why is there still moss on my roof?

Your roof was not power washed, depending on your roof slope we either (a) manually scrubbed large patches with a stiff bristle brush or (b) chemically sprayed your roof and allowed Mother Nature to take its course.

 

How long does it take for the moss to come off my roof?

Dependent on the weather and sunlight conditions 3 days to 3 weeks. Your roof was sprayed with a mixture similar to weed killer. We live in a very moist climate and at times sunlight is infrequent.[i] After spraying your moss it is left moist and wet on your roofing. Its roots are dead immediately. Sunlight dries your moss out and then rain washes it down your gutters. Hoping to be as cautious as possible to your roofing, our process isn’t immediate[ii].

What was sprayed on my roof?

A mixture known as PSAUCE©[iii]. This is the method your shingle manufacturer recommends for roof cleaning. You can see the PDF by clicking here.[iv] We added Borax-Lo[v] that keeps moss from returning.

 

Is this bad for my plants?

 

Yes and No. We’ve taken every precaution to protect your plant life by not over spraying past your gutter line and washing down any plants that were touched with our chemical. Simply put we are at your residence to kill a plant and there is not a green way to do that. If we damage any plant life we will do our best to resolve the situation with you.

 

How long does the process last?

You are covered for one year from the day you hired us[vi]. Many of our customers have reported no moss growth for 2-3 years and as many as 5! The information we have garnered has helped us create a chemical blend that works. There are over 10,000 roofs a year who fail due to moss in our area. Wet and damp moss locks and holds moisture on your roof. Large patches create a dam and the shingles underneath begin curling and swaying. We have done as much as possible to protect your roof from damage during cleaning and have made moss growth very inhospitable. Thank you for choosing us. We look forward to keeping you as a happy customer for years to come.


[i] KOMO NEWS [cites 58 days of Sun a yr.]

[iii] RCIA [Roof Cleaning Institute of America]

[iv] ARMA[American Shingle Manufacturers Association]

[vi] PWNG [refer to your warranty]