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Cedar Shake & Shingle Bureau
We are Proud Members of the Cedar Shake & Shingle Bureau~

The Cedar Shake & Shingle Bureau promotes and protects the common interests of its members involved in quality cedar shake and shingle roofing and sidewall businesses.

  
      INFORMATION CENTER                  
 
Hello and welcome to the information center. Below is a list in order of what you will find on this page. We hope this helps you to make the choice to call Go Green Cedar Roof for all your cedar shake and shingle needs.
  • WHY CEDAR?
  • QUALITY ASSURANCE
  • CARING FOR YOUR ROOF
  • WHAT IS THE DIFFERENCE BETWEEN SHAKES & SHINGLES?
  • GLOSSERY OF TERMS
  • HOW CAN HELP MY ROOF LAST LONGER?
  • CHEMICAL TREATMENTS

Why Cedar

  • Biodegradable Resource- Eco Friendly
  • Naturally resistive to moisture, decay and insect damage
  • High Insulation Value- 8 times that of Concrete*
  • High Hailstorm Resistance (UL2218 Class III and Class IV)
  • Earthquake sustainable
  • Great Aesthetic Appeal
  • Comprehensive Warranty Coverage
  • Low Maintenance
  • Fire Retardant long lasting treatment
  • Approved Pressure Preservative Treatment protecting against rot and decay
  • Peace of Mind.
Quality Assurance

This is how GO GREEN CEDAR ROOF differs from the rest - and gives you the very best! Every order is hand picked from only the finest mills to ensure your complete satisfaction. In addition, prior to each shipment, we supply a comprehensive quality inspection report consisting of the following information:

  • Mill label to confirm product, grade, and building code acceptance
  • Date of production (and any treatments)
  • Packing List for grade, tally, weight & dimensions of shipment
  • Photographs of all products included in shipment tally
  • Photographs of randomly selected bundles opened for inspection
  • Applicable treatment certificates

Caring for Your  Cedar Roof

A premium grade cedar roof, if maintained properly and installed on spaced wood strips, can last for 50 to 60 years. Whether in the form of shingles or shakes, cedar for roofing has been proven as a superior outdoor building material. Cedar has natural oils which act as safeguard against moisture, insects and other forms for decay. But a cedar roof still has to be maintained, to bolster its resistance against the elements. Maintaining your cedar roof helps to enable it to last for much longer.


CARE FOR YOUR CEDAR ROOF

The most important step in taking care of your cedar roof is to be aware of the elements that can cause it to wear down. Here is a description about those elements and a few guidelines on how to care for your cedar roof.

  • For Mold and Mildew: Mold and mildew develops after a rainy season. This can be controlled by using a solution of trisodium phosphate or household bleach mixed with water and scrubbed with a soft brush. The roof should be rinsed thoroughly afterward.

  • For Moss: Moss holds a lot of moisture to the surface of your cedar roof that would otherwise run off of it. A spray of any zinc-based cleaner (herbicide) or household bleach can help to reduce the presence of moss on your cedar roof. After herbicide is applied, moss can be cleared by hand, or with a garden hose. The cedar roof must be rinsed after the treatment.

  • For undue wear: Make sure that the trees around your property are trimmed back to prevent rodents from using them to get to the roof. You can also install bands of metal, or wrought iron around tree trunks to discourage climbing rodents from getting on to the roof. Similarly minimize the use of bird feeders that are close to your roof, keeping pecking birds (and their droppings) away from your cedar roof.

  • Foot Traffic and power washing: Walking on a cedar roof can also cause damage, depending on condition and footwear  cedar is a softer wood. Also, use of a power washer can cause damage to individual shingles and shakes.

  • About chemical use: Chemical solutions should be used with caution. When using any cleaning products on your cedar roof, always follow the manufacturers instructions carefully.

 
What's the Difference Between Shingles and Shakes?

Yes - it can be confusing. What is the difference between a shingle and shake?
In short - shingles are sawn and shakes are split, but its not really that easy.

Western Red Cedar Certigrade® Shingles are:

  • tapered wood tiles, sawn on all six faces
  • uniform thickness and appearance
  • random width, except for fancy butts and custom orders
  • packaged 4 bundles per square (100 sq.ft.)
  • based on a 3 layer roof application with no felt paper interlay
  • manufactured into remanufactured sidewall shingles

Western Red Cedar Certi-Split® Shakes are:

  • tapered wood tiles, with at least one natural split face
  • more irregular and rustic in thickness and appearance
  • random widths
  • packaged 5 bundles per square (100 sq.ft.)
  • based on a 2 layer roof application with a felt paper interlay between rows

Western Red Cedar Certi-Sawn Shakes are:

  • a hybrid between a shingle and a split shake
  • made in a similar fashion as sawn shingles
  • tapered wood tiles, sawn on all six faces
  • uniform in thickness and appearance
  • thicker than a shingle
  • random widths
  • packaged 5 bundles per square (100 sq.ft.)
  • based on a 2 layer roof application with a felt paper interlay between rows

Glossary of Terms

Some of the terms in this web site may be new to you. We trust this collection of terms will be helpful. Many thanks to those of you who suggested adding this to our web site!

Break Bulk - non-containerized, palletized ocean freight shipment

Butt - the thick end of a shake or shingle.

CCA Treatment - a pressure impregnated preservative treatment using chromated copper arsenate effective in resisting decay in any wood products by discouraging the growth of fungus, molds, other vegetation or insect attack. 

Check - a split or separation of the wood.

Course - the horizontal layer or row of shakes or shingles in a bundle or on the roof.

Coverage - the area covered by a bundle of shingles or shakes at a given exposure.

Crimps - the collapse of the cells of the wood giving a caved-in appearance.

Cross Grain - the grain runs from the front of the shingle to the back within 3" (75mm) of the length of the shingle in the area 6" (150mm) up from the butt.

Diagonal Grain - the grain does not run parallel to the edge of the shingles. It is a defect if it is slants more than 2" (50mm) side ways in 12" (300mm) of length.

Eave Line - the first row of shingles or shakes at the gutter or horizontal edge of a roof, always doubled up, sometimes tripled. Sometimes referred to as the "starter row".

Edge Grain - the wood is split or sawn at right angles to the annual growth rings. Also called vertical grain.

Exposure - the portion of the shake or shingle exposed to the weather.

Exposure Line - the line created by next row of shingles or shakes.

FCL - full container load ocean shipment.

Feather Tip - an uneven feather-like tip of a shingle or shake caused by improper sawing. 

Flat Grain - the wood is split or sawn with the annual growth rings.

FTL - full truck load road and/or rail shipment

Heartwood - the inner part of a tree not involved in the active life cycle, as opposed to the living sapwood. 

Hip - the convex sloping intersection of two roof sections. The opposite of a "valley".

LCL - less than container load, palletized ocean shipment.

Pack - the number of rows or courses in a bundle (i.e. - 9/9 pack for 24" resawn shakes).

Ridge - the horizontal peak of a roof.

Roof Deck - the main area of the roof.

Roof Slope - also called the pitch, is the ratio of the rise of the roof to the run of the roof, (i.e. - a roof with a 6 foot rise for every 12 foot of run is a 6/12 pitch, or 22.5 degree slope).

Sapwood - the outermost layer of a tree, under the bark, where the sap and nutrients flow in the living tree. Lighter in color and more susceptible to rot and decay than heartwood.

Sidewall - interior or exterior wall covering or cladding.

Tip - the thin end of a shingle.

Valley - the concave sloping intersection of two roof sections. The opposite of a "hip".


How can I help my new roof last longer?

The enemy of all wood products is water and this is certainly the case with cedar shingles and shakes. Western Red Cedar is one of the most naturally rot resistant softwood (coniferous) species in the world. Over time however, it too is susceptible to the prolonged presence of moisture. This moisture allows the agents of decay - mold, mildew, moss, and other bacterium to grow and take hold. Therefore, the number one way to make your cedar roof last longer is keep it dry longer. How do you keep a roof dry? You can't - but you can help it dry out faster and reduce the chances of rot and decay. How do we do that?

Make a pitch for a steeper roof!
It is generally accepted that the steeper the pitch, or slope of the roof, the longer it will last. A steeper pitch will hold less water and allow it to dry faster.

Let me vent a little - Roof Ventilation 
The underside of shingles need to dry as well as the sunny side. This is why we recommend that all shake & shingle roofs be applied on spaced strapping (boards, lath, sheathing, etc.). This allows the air circulating in the attic to get at the roof helping it to dry out. It also allows the shingles to stay cooler in the hot summer sun. A hot, wet environment is a prime breeding ground for the agents of decay. 

One of the reasons why shingles cup and twist is because the cells on the top side of the shingle are dried than those of the bottom of the same shingle. This causes a tension in the wood due to unequal hydrostatic pressures be 

More venting - Attic Ventilation
Adequate attic ventilation is required to help keep a home cool in the summer and warm in the winter by providing a continuous flow of air inside the attic space. This is also very important for the shingles on the roof. As the shingle roof dries from below, the moisture laden air must be replaced with fresh air. The fresh air enters through vents in the soffits and exits through vents in the roof, preferably a ridge vent as this is the highest point in a roof. Ensure your new or old roof has suitable, (and equal) amounts of soffit and ridge ventilation based on the square foot measure of you home.

Keep it clean!
Think of your roof, (or deck, patio, etc.) as the floor of the forest. Needles, leaves and branches continually fall and collect here. They fall everywhere, getting into every crack. By natural design, this debris gets wet, holds moisture and does what it is meant to do - rot! This happens even faster under the shady canopy of the trees above. Getting the picture yet? Contact us for more information on how to care and  maintain your roof. 

Product Selection
 Along with being very resistant to rot, Western Red Cedar is also very dimensionally stable, especially edge grain, (vertical grain). This is we always recommend using shake or shingle products with only 100% Edge Grain on any roof to maximize life expectancy. Flat grain has a greater tendency to move - or swell when it absorbs water and shrink when it dries. This movement inevitably leads to more cracking and splitting on the roof. Therefore, always select #1 Grade Blue Label roofing shingles or PREMIUM Grade Blue Label 100% Edge Grain shakes for your next project. They are a little more expensive but very much worth the premium.

Chemical Treatments
Sometimes, especially In hot and humid climates it is necessary to treat shingles and shakes with chemicals to get the durability we desire from our roof. The most effective way to guard against premature decay of our wood roof is to treat it prior to application. Pressure Impregnated CCA Preservative treatments have been used for decades to safely treat many wood products against rot. It is important to treat the roof before it applied because that is the only way that every bit of surface area can be evenly treated with this effect preservative. Spot treatments on an existing roof are good, but because they cannot be fixed into the cells of the wood, they wash away and need to be re-applied. Pressure impregnation physically forces the cells of the wood with the CCA chemical solution. CCA stands for Chromated Copper Arsenic. Copper is a proven anti-fungal agent and arsenic is the anti-vermin agent. Chrome acts as a catalyst to permanently fix these chemicals to the cells of the wood. Shingle and shakes roofs treated with CCA preservatives are available with warranties against rot for up to 40 years.

Please contact us with any questions regarding roof design, product selection, or roof maintenance.

 
   
 
   
 
     
 
 
   
 
   
 
   
 
   
 
 
   
 
 
   
 
   
 
   
 
   
 
   
 
   
 
   
 
   
 
   
 
   
 
   
 
   
 
   
 
   
 
   
 
   
 


 
 


 

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