Cedar Roof Restoration Bellevue

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The Process of Wood Roof Restoration

Cedar is a great product to have as a roof covering. With a proper maintenance plan, the roof can last many years and even decades. Bellevue, Washington is home to many residences that have cedar as a roof covering. Many of these homes in Bellevue have shake roofs that are 20-40 years old!

Although cedar is durable and requires little attention, a total lack of maintenance can seriously hamper the roofs’ life. Proper maintenance consists of:

  • Blowing leaves and debris off the roof.
  • Repairing damaged ridge cap and shingles.
  • Periodic power-washing and cleaning of the surface of the cedar shakes.
  • UV protection every 3-5 years.
  • The application of moss killing chemicals or zinc ridge caps.

Following a basic maintenance plan, can give you the full life cycle of your roofing. It may even prolong the roof way past its life expectancy. There is no method to restore a cedar roof in Bellevue,which has gone long periods of time without maintenance.

Although, your roof may look like it is past the point of a restoration; a safe bet would be to have a contractor give an opinion on whether it is salvageable. If the roofing substrate is not completely damaged and rotted, there is still hope for a cedar roof. The restoration process consists of:

  1. Cleaning
  2. Repairing Damaged Boards
  3. Neutralizing and Revitalizing
  4. Oiling
  5. Installing Zinc Strips or washing with potassium salts

Before and After Cleaning-Bellevue, WA

When comparing the cost of a restoration to a having a new roof installed; restoration is also very economical.The cost of a restoration is about 10% of cost of a roof replacement. On average a 2500 square foot home with a cedar roof in Bellevue can be restored for about $2000 plus ridge and shakes. That same size home can cost upwards of $25,000 to have replaced. As you can see the benefits of restoring make a lot of sense. If you have questions on whether your roof is able to be restored or you just don’t like the look of greying, weathered and dirty Cedar roofing, give us a call. We are experts at cedar roof restoration in Bellevue.

 

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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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

Soft Wash Roof Cleaning Seattle

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Chemical Roof Cleaning

Soft-washing involves the use of chemicals to clean roofs. This method is employed to lessen the amount of damage caused by power-washing. Power-washing on average removes 3-4 layers of granules per cleaning . A roof is known by its years of life:

  •  A 20 year roof has 20 layers of granules.
  •  A 50 year roof has 50 layers of granules.

The soft-wash method when used properly is far more beneficial to roofing substrate then power-washing. No granule loss happens when chemicals are sprayed on your  roofing. Additional benefits include:

  • The elimination of all moss spores that cause moss to grow in the first place.
  • A much longer lasting finished product; on average the process lasts 2-3 years

ARMA [Asphalt Roof Manufacturers Association] recommends soft-wash cleaning for proper roof maintenance. ARMA is the association that governs the making of asphalt shingle roofing. They are the leaders in the industry in the production and proper cleaning methods of roofing materials.

The difference in the finished look of the product : power-washing versus chemical cleaning is nearly indistinguishable, when the proper chemicals are used. A soft wash roof cleaning company generally use a few standard chemical products:

  • TSP [trisodium phosphate]. Known for its ability to remove algae and rust stains
  • Sodium Hydrochloride 10% or higher: known for its ability to kill moss and clean shingle.
  • Borax Lo: A soap like product known to aggressively kill weeds, spores and moss residual.
  • Isopropyl Alcohol: used when aggressive moss has been growing for long periods of time.
  • Surfactant:  used to slow the mixtures path down to the gutter line.

When mixed properly these chemicals generate a long lasting safe products to roofing material. These chemicals are not readily available to the average consumer and the mixtures of this chemical call for exact amounts for a strong enough product. The procedure of soft wash roof cleaning in Seattle is best left to a professional roof cleaning company.

 

Cedar Roof Cleaning Seattle

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Cedar Roof Cleaning Seattle

Why cedar shakes turn grey

When wood is exposed to the effects of sunlight and moisture, its surface begins to change. This change is commonly called weathering. The initial change from reddish brown to silvery gray is the result of the ultraviolet rays from sun exposure.This usually happens within the first year of installation. Eventually the roof will take on a darker gray color. This indicates that your roof is being colonized by micro fungi. PWNG specializes in cedar shingle roof cleaning in Seattle

Should I oil my roof?

Originally your cedar shingle had only 3% of its weight as oil.[1] The effects of oiling a roof are temporary. UV rays break down the oils applied to cedar shakes in most instances within 3 years. Maintaining the oil on your roof should be a tri-yearly occurrence. The oils allow natural contraction and expansion that the cedar shake experiences, due to changes in weather such as:

  • Rain
  • Snow
  • UV exposure

These stresses to the wood cause micro-cracks. As an example, a butchers block , needs to be dried and should never be put away wet. When it is left out wet and the heat in the home is turned up or it is near a stove, it warps and cups like in the picture below. The warping is caused by:

  • Expansion
  • Contraction
  • Lack of Oil

Every butchers block made of wood, instructs the buyer on oiling with mineral oil.  The exact procedure should be applied to cedar shakes.

How to keep the appearance up

You can periodically clean your cedar roof in Seattle with a power washer. The top grey layer of exposed cedar is removed and you’re left with a fresh new layer. This should only be done for maintenance. On average ¼-3/16 inch of cedar is removed per cleaning. When deciding to apply stains and oils, keep in mind that, the sun will break down any coating or stain applied, eventually. In summary, cedars appearance if left outside in any sunlight: is grey. This is its natural color and there is no product on the market today, which can withstand 365 days of rain and sun a year.

Why you should very rarely power wash your roof

Losing 1/5 of your roofs life in one cleaning, should only be done in extreme circumstances .When excessive moss and fungi have been left untreated on your roofing, it is time to power wash. You should go in knowing that you are power washing to remove debris and moss that’s accumulated. Yes your roof will look great. This is only temporary though. There is no way short of trapping your entire roof off; to prevent the weathering caused by UV exposure. We are there to remove debris and moss and apply a moss control agent. This should be done at most once every 5-7 years.

Moss Control

Our process for cedar roof cleaning in Seattle is to use a safe organic compound known as Potassium Salts of Fatty Acids.[2]Mixed with some simple household detergent to make it stick, this chemical blend naturally kills all moss spores.

Periodic Maintenance

PWNG can’t stress enough that cedar shake roof restoration in Seattle is a maintenance issue .Applying our chemical blend once a year is fairly inexpensive, under $400 in most instances. The local average of replacing a shake roof is. between $350-550 a square [10×10 feet] .Budgeting this as a yearly maintenance cost is a lot less expensive then replacing your entire roof


[1] Oregon State University Extension Service (Publication EC1271)

[2] http://npic.orst.edu/factsheets/psfagen.pdf

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]

Roof Cleaning Bellevue

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Roof Cleaning in Bellevue, Washington

Bellevue has some of the steepest and highest roofs in the area. Roof Cleaning in Bellevue are practiced in an  similar manner to any other roof cleaning in our area , however due to the steepness of the roof slopes, certain safety precautions need to take place. These precautions are:

  • Safety Monitors: One man is constantly looking out for his partner from the ground, while another performs the actual work.
  • Safety Straps in multiple locations: based on our experience  a home in Bellevue requires 3 straps or more. This can drive up the cost on a roof cleaning in Bellevue, by up to $150 dollars as compared to other areas.
  • The volume of cedar roofs is much higher. A big percent of our jobs in the area are cedar shake cleanings. Cedar shake cleanings require safety precautions not found on asphalt shingles.

The residents of Bellevue and the eastside take great care of their homes and are savvy when it comes to making decisions on the right contractors to hire. Based on our professionalism and track record for completing jobs on time and on budget we have received an enormous amount of referrals from the area.  We hope to continue to be able to serve the residents of bellevue and look forward to many more years of visting this great city and its wonderful residents.