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For WRC shingle siding, the exposure typically ranges from 5-1/2″ to 7″. Although this is primarily an aesthetic decision, an installation exposure of 6″ or less will provide triple layer coverage, essentially a roof installation on your sidewalls. This may be preferred in areas that are prone to extreme weather.Cedar shakes shingles carry some natural insulative properties and may even be recycled for mulch at the end of their life cycle. The downside is that they have to be treated with fire retardants; these chemicals can be toxic to the point of negating their non-pollutant status to some degree.The proper exposure for both shakes and shingles is determined by the length and the grade. The exposure of a shake or shingle is that portion which is exposed to weather. So, if you look at a roof with 24-inch shakes installed and you can see 10 inches of the length of each shake, the exposure is 10 inches.
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Are cedar shingles toxic?
Cedar shakes shingles carry some natural insulative properties and may even be recycled for mulch at the end of their life cycle. The downside is that they have to be treated with fire retardants; these chemicals can be toxic to the point of negating their non-pollutant status to some degree.
What is the proper exposure for wood shingles?
The proper exposure for both shakes and shingles is determined by the length and the grade. The exposure of a shake or shingle is that portion which is exposed to weather. So, if you look at a roof with 24-inch shakes installed and you can see 10 inches of the length of each shake, the exposure is 10 inches.
Cedar shingle exposure
Images related to the topicCedar shingle exposure
What is the maximum weather exposure for 18 wood shingles?
18″ 24″ 4:12 and steeper 7 1/2″ 10″ (a) (a) 24″ x 3/8″ handsplit shakes limited to 7 1/2″ maximum weather exposure per UBC and IBC.
Which side of cedar shingle faces out?
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.
What is the maximum exposure of 24 wood roofing shakes?
rEGULAR gRADE CEDAR sHAKE
Roof Exposure: 18-inch shakes – 7½” maximum; 24-inch medium and heavy shakes – 10″ maximum; 24-inch (3/8″) shakes – 7½” maximum (5″ per UBC). Wall Exposure: Single course: 8″ for 18-inch shake; 10½” for 24-inch shake.
Do cedar shingles have chemicals?
Cedar has natural preservatives in the wood that resist decay. Cedar can also be pressure-treated with chemicals that extend its useful life.
Are roof shingles cancerous?
No, modern day shingles are not toxic. However, if you roof was installed with shingles made before 1989 then it may contain asbestos which is classified as a carcinogen that must be handled as a hazardous material.
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Is there lead in roofing shingles?
Using an X-ray Fluorescence machine (XRF) they found that the roofing material contained a significant amount of lead and other toxic heavy metals. Considering most homes use asphalt shingles, this is very concerning.
How much should cedar shingles overlap?
Cedar shingles should lap at least 18 cm (7 in.) over each side of valley flashing.
What is the minimum pitch for a cedar shingle roof?
Minimum recommended pitch is 1/6th or 4-in-12 (4” vertical rise for each 12” horizontal run). Maximum recommended weather exposure is 10” for 24” shakes. Along the eave line, a 36” wide strip of Type 30 roofing felt is laid over the sheathing. The beginning or starter course at the eave line should be doubled.
How far should cedar shingles overhang drip edge?
This first row of shingles should overhang the edge eaves and fascia by about 1 1/2” and about 1/2” over the edge of the roof to allow for proper drainage.
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What is the coverage of a bundle of cedar shingles?
A standard bundle of white cedar shingles covers 25 sq. ft (2.3 m2) if the exposure is 5 in (12.5 cm). Cedar shingles are measured in squares, 1 square = 4 bundles.
What nails do you use for cedar shingles?
Correct Nails for Cedar Shingles
The ideal nail types for cedar shingle roofing projects include corrosion-resistant varieties like stainless steel and hot-dipped galvanized. At Cedar Roof Coatings, we advise against the use of plain steel nails to keep the cedar roofing stain-free over time.
Why do cedar shingles curl?
Curling or cupping – This occurs when a shingle or shake curls upward or looks distorted. Curling and cupping are part of the cedar wood’s natural weathering and aging process. They are signs of wood stress caused by the sun’s UV rays and rain.
How long do cedar shakes last?
As long as it’s properly installed and with proper maintenance, you can expect to get 30 years of life out of your cedar shake roof. If you invest in quality materials and live in an area with the right conditions, you could possibly get up to 50 years out of it.
Do cedar shingles shrink?
The spacing between shakes and shingles depends on the grain angle, width of the shake or shingle, and moisture content at the time of installation. Flat-grained shakes and shingles shrink and swell almost twice as much as vertical grained ones and require more space between them to avoid buckling.
What do you put under cedar shake roof?
Synthetic underlayment: With modern improvements and manufacturing techniques, synthetic underlayments are now considered the best material installed under cedar shingles. Synthetic underlayments are made from polyester, fiberglass and polypropylene.
Does a cedar shake roof require underlayment?
Choosing the Best Underlayment for Your Cedar Shakes
While cedar is one of the most versatile and durable materials you can use to build your roof, no roofing job is complete without a proper underlayment for protection. Underlayment is placed right over the roof deck beneath everything else, including insulation.
What grades of wood shingles are often used for starter courses?
#2 Flatgrain with limited sapwood allowed. Limited knots and defects allowed above the clear portion (the part that will show once it’s installed). Often used for re-roofing, walls and as a starter course. #3 Can include sapwood and flatgrain.
Are cedar shingles treated?
To be able to ensure the longest life possible, a cedar shake roof requires careful, dedicated maintenance. To help preserve its longevity, you’ll need to apply a treatment, which you’ll also need to reapply when necessary.
Cedar shingle exposure 5 inch vs more?
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Are cedar shakes a fire hazard?
An Increase in Safety
One of the most prominent reasons that cedar shake roofs are a thing of the past is that cedar shingles present a fire hazard. After all, cedar is wood, and wood can catch fire in the right conditions.
How do you fireproof cedar?
For fire hazardous areas, such as California, cedar shakes and shingles with FTX fire retardant treatment provide permanent fire protection. FTX was the first legal fire retardant treatment approved by the California State Fire Marshal, including Class A, B, and C application.
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