Cedar shingles need special care — the wrong method can damage them permanently. Learn the right way to clean and protect cedar with this complete guide.

Cedar shingles bring timeless beauty and durability to homes, but keeping them clean is crucial for preserving their charm and extending their lifespan. Over time, dirt, algae, moss, and mildew can accumulate, making your cedar shingles look weathered and dull. In this blog, we’ll walk you through the best methods for cleaning cedar shingles, including tips for maintenance and answers to frequently asked questions.
Cleaning cedar shingles not only enhances their appearance but also prevents long-term damage caused by algae, moss, and mildew. A well-maintained cedar roof or siding can last decades, offering excellent insulation and a rustic aesthetic. By properly cleaning and maintaining your cedar shingles, you protect your investment and keep your home looking its best.
The most effective and safest way to clean cedar shingles is by using a soft washing method. Unlike pressure washing, which can damage the wood fibers, soft washing uses low-pressure water and eco-friendly cleaning solutions to gently remove dirt, algae, and other contaminants.
Before cleaning, inspect your cedar shingles for any signs of damage, such as cracks, splits, or missing pieces. Repair or replace any damaged shingles to ensure a seamless cleaning process.
Protect nearby landscaping by covering plants and shrubs with tarps. Close windows and doors to prevent water from entering your home.
Use a biodegradable, non-toxic cleaner specifically designed for wood surfaces. At Downspout, we recommend solutions that break down grime without harming the wood. Additionally, we use a bleach and water solution to effectively kill algae, mildew, and mold. Apply the cleaner with a garden sprayer, covering the shingles evenly.
Using a soft wash system or a low-pressure garden hose, rinse the cleaning solution off the shingles. Avoid using high-pressure water, as it can damage the wood fibers and cause splintering.
A wood brightener can restore the natural color of cedar shingles and enhance their grain. Apply it after washing and allow it to dry thoroughly.
Once the shingles are clean, inspect them again for any missed spots. Allow the shingles to air dry completely before considering additional treatments like staining or sealing.
Regular maintenance is key to keeping your cedar shingles looking new. Here are a few tips:
Biodegradable and non-toxic wood cleaners are the best choice for cedar siding. Avoid harsh chemicals that can strip the natural oils from the wood.
Pressure washing is not recommended as it can damage the delicate wood fibers. Stick to soft washing for safe and effective cleaning.
If you prefer the weathered, grey look, let the cedar shingles age naturally or use specialized treatments to accelerate the greying process.
Vinegar can help remove mold and mildew but should be diluted to avoid damaging the wood. For best results, consult a professional cleaning service.
At Downspout, we specialize in soft washing cedar shingles to ensure a safe, thorough, and eco-friendly clean. Our expert team uses top-quality cleaning solutions and techniques to restore the natural beauty of your cedar while protecting its integrity. Contact us today to schedule a professional cleaning service!
By following these tips, you can keep your cedar shingles looking fresh and vibrant for years to come.
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