9 Cedar Shake Roof Maintenance Tips

There are few things more charming than a brand new cedar shake roof on your home, but that appeal will fade over time if you don’t carry out the necessary upkeep. Use these cedar shake roof maintenance tips to keep your wood roof in tip-top shape, lengthen its life span, and maximize your home’s curb appeal in the meantime.

1. Remove Debris Regularly

Moisture is enemy number one when it comes to cedar shake roofs, and any leaves or accumulating tree debris that sits on your roof will hold moisture against it. That moisture will accelerate mold and mildew growth, which can discolor your roof and limit the lifespan of the cedar shakes themselves and any sealants you apply to them.

Once a month, scan your roof for accumulating debris and brush it off to keep moisture at bay. Use a long roof brush to get the work done from the ground or from a ladder and limit the risk of injury.

2. Keep Branches Away

While you’re removing debris, don’t forget about live trees that hang close to your roof. Those leaves can also hold moisture against your shakes, decreasing their life span and contributing to mold growth, mildew, and discoloration. Trim back any tree branches that hang within a few feet of your roof to avoid having to pay for a new cedar shake roof earlier.

3. Scrub Off Mold and Algae

Few things can detract from the appeal of a cedar shake roof like mold and algae growth. Plan to access your roof as needed and scrub off any discoloration with a soft-bristle brush. You can even use a gentle cleaning solution for stubborn areas or consider pressure washing your roof with a low pressure. Pay close attention to shaded areas on your roof where moisture is more likely to be an issue.

Whenever you access your roof, it’s a good idea to use a safety harness to keep yourself protected. Algae, in particular, can make your cedar shakes slippery, so use caution and be sure to wear rubber-soled shoes for added grip. You can always consider just paying for roof cleaning from a professional.

4. Apply Fireproofing Spray

One downside to cedar shake roofs is that they’re highly flammable unless you treat them with a fireproofing spray. Most modern products include a fire-retardant application, but you’ll need to reapply every 2 to 5 years. You might need to consider more frequent treatments if you live in an area that’s prone to wildfires. Ask a local roofing company about how long you should wait in between applications, as it varies based on your climate.

Keep in mind that this might not be necessary if you have a synthetic cedar shake roof, as the material usually isn’t nearly as flammable as a real wood roof.

5. Reapply Sealant Regularly

In addition to fireproofing, you should consider applying a waterproof sealant to your cedar shake roof to protect it from moisture, rot, and mold growth. Homeowners in arid climates can likely get away with this application once every two to three years, while homeowners in rainy or humid climates should consider it annually.

Some sealants also protect your wood roof from fading that can occur from exposure to UV radiation. An all-in-one application can help maintain a nice roof color as your shakes age, as well as protect the material from moisture.

6. Annual Roof Inspections

An annual roof inspection is a good idea no matter what type of roof you have. A professional will be able to look for potential damage that could lead to leaks and other issues, and they’ll also let you know if you need roof repairs that will increase the lifespan of the material. They can also let you know if roof replacement costs would be a better financial option.

Professional inspectors can also guide you on the best timeframe for treating your wood roof with the necessary applications based on your area and the age of your roof.

7. Replace Damaged Shakes or Shingles

Inspect your cedar shake roof from the ground about once a month or after any extreme weather events to look for damage. Keep an eye out for cracks and missing shingles, and hire a roof repair professional who specializes in wood roofs to get any small issues fixed before they turn into major issues. Roof repairs cost an average of around $1,150, but they can save you from much more expensive water damage repair costs if you take care of the repairs early.

8. Be Proactive About Pests

Rotting wood will attract termites and other wood-destroying insects, and whether the pests are attracted to your roof initially or some other source of wood on your property, they can eventually make their way to your cedar shakes.

Consider setting up recurring pest control services to keep pests at bay and prevent issues before they begin. You can opt for routine applications, or you can choose ongoing perimeter control for more problematic pests, like termites.

9. Keep Your Gutters Clean

Gutters help keep moisture and water away from your roof. If they get clogged, runoff can easily back up and affect your fascia boards, soffits, and roof shakes, leading to rot and mold growth. Clean out your gutters at least once every fall—and ideally twice per year, with one cleaning in the spring and one in the fall—to prevent issues from occurring. Hire a local gutter cleaning company to get the job done if you don’t have the time or necessary tools.