Grading & Manufacturing

What is a shake/shingle?

It does not exist. Both shakes and shingles are individual product types.

How are tapersawn shakes made?

Certi-Sawn® shakes are made using the same equipment and methods as a shingle, except the physical dimensions of these tapersawn products, particularly the butts, are similar to Certi-Split® shakes.

What is the difference between a shake and a shingle?

Generally, a shingle is sawn on both sides and is thinner at the butt than a shake. A shake is typically split on one or both sides. There are important exceptions to this, (tapersawn shakes = shakes sawn on both sides) depending on the specific manufacturing method and the dimensions of a specific product. Shakes are still manufactured by hand, but most are now made using powered equipment. Certi-Split® shakes are made by taking the wood straight split from the block, and sawing it end-to-end at an angle. This creates a shake which is sawn on one side and split on the other, often called a "handsplit and resawn" product. Medium shakes are shakes that measure nominal ½" at the butt. Heavy Shakes are shakes that measure nominal ¾" at the butt.

How are shingles manufactured?

Shingles are always sawn on both sides from a block of cedar. Most shingles are manufactured using a stationary, upright saw. The block of cedar is moved through the path of the saw by a device called a carriage, which holds the wood firmly, but also alternates the angle of the cut with each stroke. After being cut from the block, the sides of each shingle are then trimmed to create square corners on the product. The material manufactured by CSSB members is then bundled with a Certigrade® label, and shipped for roof installation, or for additional processing to create more tailored sidewall products.

What is a mallet and froe?

Originally, all shakes were split from blocks entirely by hand using a sharp blade called a froe, and a mallet. Some shakes are still manufactured this way, typically for special orders. This splitting technique may be done straight or at an angle, depending on the needs of the customer. Shakes which are split straight to create parallel sides, have sometimes been called "barn shakes". Tapersplit shakes are split at an angle, and are only made with hand tools.

What is a "jumbo"?

A "jumbo" is a specialty order shake, typically a nominal 1" or greater at the butt. Contact your Member Contractor/Installer for more details on availability and pricing.

What are "Fivex", "Perfection" and "Royal"?

Fivex is a nominal 16" length shingle. Perfection is a nominal 18" length shingle. Royal is a nominal 24" length shingle.

I have in depth grading questions that are not covered in this list. Who do I contact?

For more information on the dimensions and grades of different shakes and shingles, please visit the CSSB's Certi-labelTM Products page. If you still need more information, please contact Marty Obando by email.

How are shingles remanufactured?

Remanufacturing takes additional steps to create more tailored shingle products. Rebutted and re-jointed shingles are trimmed again along the sides and at each end. These Certigrade® "R&R" products may then be packaged and sold, or may undergo further machining, such as face-sanding, machine grooving to make Certi-Groove® shingles, or pattern cutting to the butts of the shingles to make Certi-Cut® products. Some manufacturers also offer pre-primed or pre-stained products in different colors for sidewall installation.

Are cedar shingles one sided, and if so, which side faces out?

Cedar shingles have 2 (faces) sides and the best looking face is installed exposed to the weather. The face you like best is the one that should be installed exposed to the weather. (Note: Machine grooved shingles are installed with the grooves exposed to the weather).

What is the difference between a number one grade shake and a premium grade shake?

The difference between the two is only the flat grain content. Premium grade shake bundles contain no flat grain shakes. Number one grade shakes contain up to 20% flat grain per bundle.

Can I use roofing shingles on my sidewall project?

Yes, you can. However, you should note that for the most tailored sidewall appearance you should use specific sidewall product called "R&R" or "Rebutted and Rejointed" on all sides. Roofing materials used on sidewall projects will typically give you a less tailored appearance.