Indicators That Your Cedar Roof Needs Cleaning

1. Moss and Algae Growth: If you notice green patches or streaks on your cedar roof, it’s a sign that moss or algae have started to grow. These organisms retain moisture, which can lead to wood rot and structural damage.
2. Discoloration: Cedar roofs can change color over time due to exposure to the elements. If the shingles appear darker or have a blotchy appearance, it’s likely due to dirt, mold, or mildew buildup, indicating the need for cleaning.
3. Debris Accumulation: Leaves, twigs, and other debris can accumulate on your roof, especially in the valleys and corners. This debris can trap moisture against the shingles, accelerating decay and fostering moss growth.
4. Curling or Warping Shingles: When cedar shingles start to curl or warp, it often means they are retaining too much moisture, possibly due to moss, algae, or debris buildup. Cleaning can help restore their proper function and appearance.
5. Fungal Growth: Black streaks or spots on your cedar shingles can be a sign of fungal growth. This not only affects the appearance of your roof but can also degrade the wood over time.
6. Ineffective Water Runoff: If water is not flowing off your roof efficiently during rain, it could be due to clogged gutters or downspouts, often a result of debris buildup. Regular cleaning helps maintain proper water drainage.
7. Inspection Reports: If a professional inspection indicates a buildup of dirt, moss, or other organic materials, it’s a clear sign that your cedar roof needs cleaning. Regular inspections can help catch these issues early before they cause significant damage.

Regular maintenance and cleaning of your cedar roof can extend its lifespan and keep it looking attractive. If you notice any of these signs, it may be time to schedule a cleaning.