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How to protect cedar shingles
Regularly clear debris off of the shingles.
Organic matter like branches and leaves that lie on cedar for a long time can grow mold and mildew, which will in turn seep in the cedar and cause its quality to deteriorate. Clear the shingles approximately every 2 weeks, and remember to remove any debris after rainstorms.
Clear ice and snow off of the shingles. Keep inside areas behind the shingles properly insulated.