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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Deck Restoration Seattle

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Old Weathered Decks can be Restored

Wood deck restoration in Seattle is the process of bringing back the natural appearance to wooden structures such as cedar roofs, cedar decks, gazebos and patio furniture. The climate in Seattle is wet, damp and lacking in sunlight; this leads wooden decks to develop:

  • Moss, Fungus and Lichen.
  • Micro cracks from the stresses of constant rain and sporadic sunlight.
  • Weathering: wood uses weathering to protect itself from our climate.

Although your wood deck in Seattle may look like it needs replacing, most of the time a restoration can bring it back to life. The process of wood restoration is accomplished using certain tools and chemicals and done in a certain order. The first step would be a survey of the structure to be restored.

The Survey

Before starting any restoration project a survey of the structure must be done. Some common questions asked by wood restoration experts are:

  • What type of wood is the deck, gazebo or roof made of?
  • What type of maintenance was previously done? If the wood structure has been previously stained, a different procedure would be called for.
  • Is the damage to the wooden structure on a surface level or will boards and shingles need to be replaced?
  • Is the structure infected by moss and lichen or black algae? If so a treatment before cleaning must be done to rid the deck of these.
  • What is most cost effective to the customer and what procedure will last the longest?

By starting with a good survey it gives both the customer and the restoration expert the opportunity to take the measured steps required in bringing back the wooden structure to its original appearance. Different types of wood require different types of cleaning procedures and chemicals. The woods condition and its current appearance will give the restoration company, a starting point on what needs to be done next.

Chemicals Used in Wood Restoration

Each chemical in the process of wood restoration carries a function. The mixtures for these chemicals can vary widely due to:

  • The level of cleaning needed.
  • The wood type being cleaned.
  • Whether the wooden structure will be stained or has stain currently on it.

Below is a sample table with some common chemicals used in wood restoration. This is not meant as an all inclusive list but as a starting point for what is commonly used in the renovation of wood.

Chemical

Function

Oxygen Bleach

Draws dirt to it gently, used as a green material.

Citric Acid

Brightens and restores natural hues.

Sodium Hypochlorite

Removes top layers of grime, kills moss and lichen.

Trisodium Phosphate

Removes paint stains and rust. Helps kill moss and lichen.

Oxalic Acid

Brightens and remove rust stains. Sets an even tone to wood.

WARNING! The use of these chemicals and their mixtures should only be done by an experienced wood restoration expert. Wrongly mixing chemicals such as Oxalic acid with Oxygen bleach can cause VERY serious injuries. These 2 chemicals cause a reaction that causes noxious gases and when mixed with water can even cause explosions.

The Process

There are steps to properly restoring wood. Certain chemicals are used for each step in the process; wood restoration is also done in a standard order:

1. Cleaning

Depending on what the restoration expert believes is appropriate for cleaning; the deck, gazebo or roof is usually sprayed with a mixture of oxygen bleach or a trisodium/sodium hypochlorite cocktail. This is done to lessen the amount of time it will take to power wash the structure. Power washing by the expert is done with the upmost care to limit the furring of the wood, usually at a PSI of 1000 or lower for wood structures.

2. Brightening:

The process of brightening can be accomplished with either oxalic acid or citric acid or a brightening agent of the restoration experts choosing. This process also helps to neutralize the effects of having used heavy cleaners on wood. It also helps to bring out the woods natural color and grain patterns.

3. Staining, Sealing & Weatherproof

After brightening and neutralizing your deck or roof, a sealer, stain or weatherproofing product should be applied to extend the life of the cleaning and protect the wooden structure from UV rays and rain. The product can vary by the customers or restoration experts’ opinion on the best method for the type of structure. For instance, a cedar roof would receive an oiling while a deck would receive a stain with rain and UV inhibitors.

Appearance and the customers concerns also determine the right product to use. There are many products out there today that contain algae resistant chemicals and coloring to add both protection and improved appearance to the cleaned, brightened and stained wooden deck, roof, gazebo or furniture.

Conclusion

Seattle is home to over 150 days of rain a year. Moss, Lichen and mold are a problem we are constantly battling to control. Decks are an inviting environment for the growth of moss and lichen, and are also victims to the effects of weathering. Proper care and maintenance of wooden structures should be done on a yearly basis. Choosing the right chemicals, tools and procedures can either enhance or ruin a deck. Whether you are considering doing-it-yourself or are seeking a professional for advice you are welcome to call us with any questions or concerns.

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

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

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.

How to Kill Moss on Roof

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Lichen –that green stuff you call moss growing on your roof is a fungus.  Everyone knows that treating fungus is only done with some type of medication; it just doesn’t go away on its own.  What you take for your body is real similar to what needs to happen for cleaning roofs.

Using a pressure washer on your roof is tantamount to scratching an infection and spreading it around. Without treatment these spores are now where they started from to covering your entire roof. Water propels these spores and sends them streaming and breeding along your roof line without the proper treatment after a cleaning you’re left with a bigger problem then what you started with.

An effective chemical to treat any type of moss is sodium hypochlorite at a high percentage. You can’t just go in and buy bleach at the store and spread it around as the percentage of bleach on store shelves is too low in quantity per gallon and too expensive on your pocket-book to actually do its job. On average a roof needs 35-40 gallons of roof cleaning mixture to cover and kill moss on your roof.

The effect is minimal when sodium hypochlorite isn’t given an effective herbicide (penicillin for plants) to help it last longer and kill those spores that are left, from returning.

When you decide to hire your contractor, the type of chemical he uses will give you a good idea on when you’ll have to hire him again. MOSSBEWARE and MOSSOUT are the 2 biggest retail moss killers out there. Sure they do their job but the effects only last for about 60 days before the stuff is back. On average our mixture lasts 2-3 years.