Cost to Clean a Cedar Roof in Seattle

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Cedar Roof Cleaning Cost in Seattle

The cost for a cedar roof cleaning in Seattle for a :  3000 square foot , 2 story, medium roof pitch home, averages between 800-1300 dollars. There are many expenses to cleaning a cedar roof:

  •  Labor
  • Gas for Power washer: 75-85 dollars worth for a 3000 square foot home.
  • Insurance costs
  • Chemicals [oxygen bleach and a revitalizer]

The cost for a cedar roof cleaning quickly adds up for the company performing the task. Cedar roof cleanings require meticulous attention to detail. Every square inch is cleaned for the product to turn out right. The job is very labor intensive and requires a set of skilled eyes and hands.

Cedar roofs are like ice when there is moisture and moss growing on them. A good tool to have is a pair of Korkers©. These shoes with spikes are essential to a cedar roof cleaner in Seattle. The spikes allow the wearer to grab a footing while cleaning the shakes. They do not replace other safety measures such as:

  • Lanyard
  •  Chicken ladders
  • Harness
  •  Rope

There is a lot to pressure washing a cedar roof and the right equipment and experience are necessary when deciding to tackle on the task. Many roof cleaners in Seattle won’t even touch a cedar roof as the liability for something going wrong is too high. Slips-Falls and improper use of a power washer can have serious consequences for the roof cleaner and the roofing substrate.

If you are considering hiring someone to clean your cedar roof always make sure the company’s licensed, bonded and insured. Make sure to ask for references. Cedar roof cleaning is a task that requires many years to master and some of the best roof cleaners won’t try their hands at it.

We provide cedar roof cleaning and oiling to the following cities:

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

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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

Pressure Washing removes Asphalt Shingle Granules

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Granules, the sand like element that is keeping the rain from destroying your home by way of the roof shingle. Granules are also the reason you should never pressure wash your roof. These delicate granules are held to your roof shingle, layer upon layer by a form of glue. A simple walk on your roof removes some granules, just imagine the damage a pressure washer does to it.

A.R.M.A [American Roofing Manufacturers Association] represents a majority of roofing manufacturers in North America. Their primary concern has been to find common ground on asphalt shingle manufacturing  and the process of maintenance.

Their bulletin on the proper method of roof cleaning 1 is commonly, cited by roof cleaning companies. The three main points of the bulletin were:

  1. Never power-wash asphalt shingles.
  2. Only chemical cleaning can temporary remove and combat algae stains
  3. The only long-lasting way to combat algae is to have AR [algae resistant shingles] installed.

Unfortunately, although Algae resistant shingles are reaching their teen years in service, not very homes being built to this day have them installed due to the higher cost of the shingle compared to a regular asphalt shingle. RCI-online, stated that up to 50% of all roof replacements are done for cosmetic reasons instead of from leakage or wear. 2

Sources cited:

1.http://www.asphaltroofing.org/pdf/tb_217.pdf

2.http://www.rci-online.org/interface/2007-01-ammerman.pdf