Are cedar shakes chemically treated?

Cedar shakes may be chemically treated with fire retardants to improve fire resistance.

Are wood shingles treated with chemicals?

But it turns out that manufacturers do offer shingles that have been pressure treated with a compound called chromated copper arsenate (CCA) to extend the life of this hardy species. While until the end of 2003 it was the dominant wood preservative for residential building products, CCA is rarely used these days.

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 are cedar shingles treated with?

CCA is a preservative treatment infused into cedar shakes and wood roofing shingles through a high-pressure process before they’re delivered to you for installation. CCA treatment helps protect and extend the life of a wood roof. Wood roofs naturally age to gray.

Are cedar shakes pressure treated?

General Information. The Certi-Guard® label identifies cedar shakes and shingles which have been pressure-impregnated with fire-retardant polymers to provide permanent fire protection.

Is it better to paint or stain cedar shingles?

First, stain preserves the texture, grain and appearance of the wood better than paint. Second, with stain there is no peeling problem since it soaks into the wood. Finally, in most cases stain is actually easier to apply – at least on shingles.

Do you need to seal cedar shingles?

No. Never seal your cedar roof. Sealing the roof will lock in moisture that would otherwise naturally evaporate during normal weather conditions. Cedar needs to breathe and thus a water repellant type product, rather than a water proofer is the best route to follow.

Is cedar toxic to humans?

There are actually two type of trees commonly called Redcedars. The Western Redcedar (Thuja plicata) and Eastern Red Cedar (Juniperus virginiana), also known as aromatic Cedar. Caution- Eastern Red Cedar is actually quite toxic if ingested.

Is cedar toxic to breathe?

Western red cedar is a wood that has a clear association with the development of asthma. Toxic effects are specific to the species of wood. The chemicals in the wood may be absorbed into the body through the skin, lungs, or digestive system.

Are cedar shake roofs a fire hazard?

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 treat white cedar shingles?

The Cedar Bureau recommends using a solution of 1 part bleach to 3 parts water. Apply it with a pump sprayer let it sit for about 15 minutes before rinsing it off with with a garden hose. Be sure to keep the hose pointed downward to avoid forcing water up behind the shingles.

Should you stain cedar shingles?

Staining cedar shingles not only enhances their beauty but also fortifies them against threats posed by the elements. Here is a helpful tip if you are thinking of staining some cedar shingles. To protect new shingles, apply a penetrating stain.

How long does cedar shingles 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.

Are roof shingles treated?

Slate, metal, recycled rubber and even some brands of asphalt composition shingles all will last just as long as cedar, and none of them is treated with CCA. Recycled rubber is especially attractive from a green point of view, and the shingles look very much like slate.

How long do treated pine shakes last?

Treated pine shakes should last 30 – 40 years with proper maintenance, which is similar to cedar.

How do you install wood shingles on a roof?

How to Install Wood Shingles | This Old House – YouTube

Should cedar shakes be stained or painted?

Paint or stain? The best answer is based on your home’s current cedar condition. Stain lasts longer and often looks more natural, but can only be applied if cedar is paint-free. Paint offers more protection and can be a good choice for badly worn homes with previous peeling issues from past painting applications.

Does cedar siding need to be treated?

If you want your home’s cedar siding to live up to its reputation for longevity and decay resistance, make sure it’s treated or stained properly and checked periodically.

Can you stain cedar shakes white?

Tom also points out that there are dipped white cedar shingles that are more protected, which means it lasts longer. These lose that natural, “weathered” look, but then you can have any stain or color you want and don’t have to worry about painting it after the fact.

What is the difference between a cedar shake and shingle?

Cedar shakes are split off while shingles are sawn smooth on both sides and cut tapered. Lastly, shakes are thicker than shingles. Durability – Generally speaking, cedar shakes are more durable and last longer than shingles because they are thicker and made from premium grade wood.

How do you treat a cedar shake roof?

Cedar shingle maintenance must include protective treatments every one to three years. Without treatments, cedar shakes can degrade, buckle, rot, and even burn. To protect and preserve your roof, every few years, professionally apply water and fire repellents, fungicides, and algaecides to the shingles.

How do you waterproof cedar shingles?

Download Article. Treat cedar shingles with a water-repellent preservative. Water-repellent preservative (WRP) is a generic term for a clear finish that penetrates the wood to create a protective layer that helps prevent water damage. Applying a layer of WRP can help keep your cedar shingles protected from the elements …

Does cedar have toxic chemicals?

Native to the Pacific Northwest and the original Cedar wood used in traditional Native American cooking. Western Red Cedar is delicious and non-toxic. This is the safest and most recommended for Cedar plank cooking.

What is cedar poisoning?

Cedar leaf oil is made from some types of cedar trees. Cedar leaf oil poisoning occurs when someone swallows this substance. Young children who smell the oil may try to drink it because it has a sweet smell.

Is cedar a carcinogenic?

In general, exposure to excessive amounts is considered to have an irritant effect on eyes, nose and throat in addition to pulmonary function impairment and is considered a human carcinogen. Western red cedar dust has also been shown to cause asthma.

Can cedar cause asthma?

What is western red cedar asthma? This type of asthma is caused by exposure to the dust of western red cedar. The dust contains plicatic acid, which causes an asthmatic reaction in people who are allergic to the acid.

Can cedar make you sick?

‌Cedar fever, also referred to as allergic rhinitis, isn’t exactly what it sounds like. It’s not flu, and it’s not a virus — it’s an extreme allergy. Cedar fever is common in areas with a lot of mountain cedar or juniper trees. These trees release a large amount of allergy-causing pollen, and it overwhelms the body.

What woods are toxic to humans?


Wood Botanical name Toxic parts
Balsam fir Abies balsamea Leaves, bark
Mulga Acacia aneura Dust
Brigalow Acacia harpophylla Bark dust, wood dust
Australian blackwood Acacia melanoxylon Dust, wood

Are shake roofs legal in California?

The ban on cedar shake shingles in California is an understandable safety precaution. With many areas prone to violent wildfires, it is critical to do everything possible to prevent them. While before, this meant giving up that beautiful, wood shake look, that is no longer the case.

Are cedar shake roofs good?

Cedar wood shingles and shakes are also resistant to strong winds and are durable in hurricanes, heavy rains, hail storms, snowstorms and other types of severe storms. Cedar wood roofs are also energy efficient, providing a natural insulation up to two times that of asphalt shingles.

Are cedar shingles fire resistant?

Today, there are cedar roof shingles and shakes available that have been pressure-treated with fire-resistant chemicals at the factory and can achieve a class B or C fire resistance rating.

What is better red or white cedar shingles?

Overall, red cedar shingles are more energy efficient and environmentally friendly than white cedar shingles. This is partly due to the red shingles’ unique cellular composition that results in the capturing of small pockets of air and improves insulation capabilities.

Is linseed oil good for cedar shingles?

Some cedar siding shingles are treated with bleaching oil, which is a treatment made with linseed oil and bleach crystals. Along with protecting your cedar shingles against decay and other coastal contamination, this treatment will also give them the weathered silvery gray look that many homeowners prefer.

How do you keep cedar shakes looking new?

If you have weathered and discolored wood siding, you can regain the new look of cedar by cleaning off the dirt and mildew with a solution of one third cup liquid household detergent (be sure it is ammonia-free), one quart liquid household bleach (containing 5% sodium hypochlorite), and three quarts warm water.

How do you protect cedar shakes?

Using stain and clear coat does protect the wood and gives you a longer life for the roof or siding. The other finishing option is paint. You can paint the cedar to whatever color you wish. The natural oils in the cedar can discolor paint so be sure to apply a oil based primer coat to seal it.

Can you paint cedar shake shingles?

You can prime and paint new shingles as soon as you have installed them, but since weathering can quickly alter the paintability of wood, if you don’t get to the job within two weeks, you’ll have to recondition the wood fibers.

Do you have to stain cedar shakes?

Treating cedar shingles must be done on a regular planned basis. Using a transparent, or semi-transparent stain will add to their water repellency. Best spraying, using an airless paint sprayer, however can be brushed or rolled. Sprayers will treat shingles with a more even uniform application.

Does exterior cedar need to be sealed?

Cedar offers a durable option for exterior and interior building projects with natural resistance to rot and decay, so a protective finish is optional. If you want to enjoy the aroma of varieties such as Western Red Cedar and incense cedar, leave the wood unsealed.

Why is there a shortage of cedar shingles?

The softwood lumber shortage of pine, douglas fir and cedar is due to the increase in the demand for lumber materials and the increased supply and delivery time of mills.

Do cedar shingles turn GREY?

Left unfinished, cedar shingles will change color, gradually turning into that familiar weathered gray. The color of naturally weathered shingles can vary greatly based on exposure to moisture, sunlight, and salt water.

Can I seal a shingle roof?

SHINGLE SEALER™ can be used to rejuvenate, waterproof, seal, protect and beautify most any type of sloped roofing surface. Acrylic resins actually rejuvenate and promote extending the roof’s life &amp, roofing surface.

When should I replace my cedar shakes?

Signs a Cedar Shingle or Shake Needs Replacing

If one or more of the shingles or shakes on your cedar roof are showing any of these signs, it’s time to swap them out for new ones. Splitting – If the split has rounded edges and the interior is a dull orange or grayish color, then it’s a result of natural weathering.

What is a pine shingle?

Shingles of pine wood, much used in Europe and, at one time, in the US.

How long do wood shingle roofs last?

Wood shingles are known to last up to 30 years when they are properly maintained, though they do require more maintenance than many other material types. Wood shingles are usually made of cedar since it is naturally more resistant to insects and rot than other types of wood.

What kind of 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.

Can you use a brad nailer for cedar shingles?

Can you use a nail gun on cedar shingles? Of course, yes. It’s going to be pretty faster than hand nailing.

How much do you overlap cedar shingles?

Cedar shingles should lap at least 18 cm (7 in.) over each side of valley flashing.