Seattle-Bellevue Roof Cleaning Photos

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Most people seeking a roof cleaning,cedar roof restoration or deck restore do some research on a business before actually calling. Seattle is home to the most tech savvy consumers in the nation. Bellevue is home to many professionals who are accustomed to diligently checking references and using friends and family as their source for home improvement recommendations.

The saying goes that a picture is worth a thousand words so this post will focus on photos taken by 1 of our 3 crews to help serve as a reference to how we clean roofs, restore decks and bring back to life cedar roofing:

 

DECK RESTORATION BELLEVUE

BEFORE DECK CLEANING BELLEVUE,WA

This deck was covered in algae. It took 3 washes with oxygen bleach and an oxalic acid treatment to restore it.

Here the power of experience comes into play. The use of per-carbonate cleaner before a power-wash was the only way to effectively remove the deep stains. A light coat of sodium hypo helped kill moss.

The final step in a restoration is applying an oxalic acid treatment.

The restoration of this wood deck that had very little maintenance took  4 different chemicals and 6 hours. A dramatic difference from the photo above.

ROOF CLEANING SEATTLE

BEFORE-ROOF-CLEANING-SEATTLE

This roof had moss growth over its entire surface. We manually scrubbed and then applied moss killing and stain inhibiting chemicals.

Composition roofing is an inviting environment for moss growth in Seattle. Make sure to not destroy your roof while having it cleaned! We NEVER use power washing on asphalt/composition roofs.

After manual scrubbing, a moss and stain removing chemical mix was sprayed on this home in Seattle.

Using the soft wash roof cleaning method can clean a composition roof without destroying it. The difference in the pictures couldn’t be any more stark. All our roof cleanings come with a one year no moss warranty.

CEDAR ROOF RESTORATION BELLEVUE

Before and After Cleaning-Bellevue, WA

This roof in Bellevue, Washington was restored in a 5 step process. The roof was oiled to prevent cracking and warping during the cold winter months.

Cedar roofs are some of the trickiest projects to undertake for a roof cleaner. Safety and using the right chemicals are serious concerns. The roof above was suffering from severe weathering and the photo above was snapped mid way during the cleaning process.

Bellevue Cedar Roof Restore

After a thorough cleaning and acid wash this cedar roof was oiled to prolong the cleaning process.

Oiling a cedar roof deflects the harsh winter months we face in the pacific northwest. Choosing the right products and adhering to a maintenance schedule can lengthen the life of your cedar roof in Bellevue, Washington.

CONCLUSION

Trusting recommendations can go a long way in choosing the right contractor . We hope the photos above served as a reference to what we do. We have serviced over 200 clients in the last year and have many referrals upon request.

 

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Black Streaks on Roof

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Chemical Cleaning to Remove Black Streaking from Roofing

Gloeocapsa Magma is the scientific name for those black streaks on your roofing. Gloeocapsa is a form of algae that lives in wet humid climates. These streaks of black are not as evident in the Seattle-Tacoma region due to the majority of roofing material being of dark coloring. If your roofing substrate is light colored, it’s very probable that these stains will be found on your home.

Although, Gloeocapsa Magma is not harmful to roofing, the appearance of a home suffers tremendously. When selling a home the algae stains should be an issue that is dealt with before the home is placed up on the market. These stains are a red flag to potential home owners who may not know exactly what that black stuff is and whether or not it’s harmful to the roofing.

Soft wash roof cleaning with chemicals is a superior method of removing Gloeocapsa. This method of roof cleaning gets rid of these unsightly black streaks while keeping the integrity of the roofing intact. Power washing is not as effective at eliminating Gloeocapsa. It is also very damaging to roofing shingles. Read more here………….

In the picture to the left, a chemical solution is sprayed on the roof. Each chemical in the mix does a certain job. Within 25 minutes, the picture to the right shows the roof stains are almost completely gone. The mix continues to work on the stains and streaks until the next day of rain. After the roofs first shower, the roof is looking its best.

Going from being a white roof covered in black to being a white roof again has strong selling value for a home. Soft Washing is a great way to safely and effectively remove black streaks from your roof in Seattle. Whether your home is up on the market or you just don’t like coming home to a dirty roof, consider chemical cleaning when hiring a roof cleaning contractor.


 

Cedar Roof Oiling is it Necessary?

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Why Should I Oil My Roof?

 There is a big debate on the benefits of oiling a cedar roof. A comprehensive and great research paper was written by OSU students, referenced in EC1271, September 1988. Their exhaustive research neither discounted nor encouraged oiling of cedar roofs. As stated in EC1271, originally Cedars mass only contained 3% of its weight in oil. With such a small percentage of its weight to begin with being oil, the debate on replenishing is faulty.

 We are not stating that the oils should be replenished. We are advocating oiling a roof in Seattle to prevent rapid expansion and contraction caused by UV rays and rainwater. The stress of shrinking and enlarging cause wood to crack, it is our belief, that oiling a roof stops the expansion and contraction from causing damage to the shingle. The oil allows natural contraction to happen without stressing the wood it is applied to.

 

What Product to use when Oiling a Cedar Roof in Seattle?

Chevron shingle oil is a superior product for oiling cedar roofs it is of low velocity and transparent. The application doesn’t change the appearance of wood; instead it gives the wood a wet look. Although higher in price then other cedar oils, the history and its long established reputation amongst wood restoration experts make it possibly, the best choice for oiling a cedar roof or fence. There are many benefits of Chevron Shingle Oil such as:

  •  Its established reputation.
  •  Its ability to mix well with solvents.
  •  Its lasts when applied: many homeowners have said their oil treatment lasts 5 years or longer.
  • It’s easy to apply. A backpack sprayer with a round tip or flat headed tip work great. There is no need for paint sprayers.
  •  Its ability to be mixed with stain.

5 gallon pails of Chevron Shingle Oil

Why Chevron Shingle Oil?

 Its long established reputation is a major factor on why this is our product of choice. We have used other oil products but they don’t lay down as well as Chevron. When mixed with a solvent at 1 to 5 gallons of shingle oil the flow of the oil is even. The vast majority of a roof can be covered in one solid, thin application. A major problem when oiling a cedar roof is over application that clogs the pores of the wood. The oiling needs to be laid down evenly and uniformly in a thin manner. Chevron in our experience, when mixed correctly, accomplishes this.

 When deciding to oil your roof, it should be done from the day it was installed. The ability to repair a cedar roof once the damage has been done is nonexistent. Maintenance is major issue for wood roofs. There are ways to treat cedar for moss that differ greatly from the way we would treat a composition roof. On average a 1200 square foot roof area costs from $16,000-25,000 dollars, according to homewyse. Yearly maintenance can run you about $400. When deciding to purchase a home with a cedar roof or having it installed, budgeting for maintenance should be the first thing you do. The unexpected consequence of not maintaining your roof, can seriously hinder your economic circumstances.

 

 

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 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