Portland's 150+ rainy days per year create ideal conditions for moss growth on roofs, patios, and walkways. Our treatment program uses zinc-based solutions that are effective yet gentle on surrounding plants.
For roofs (especially common on older bungalows), we apply preventative treatments in early fall before the heavy rains begin. This helps preserve cedar shake roofs common in neighborhoods like Laurelhurst. On hardscapes, we use a two-step process: first removing existing moss with specialized tools that don't damage surfaces, then applying a protective coating.
We also address the underlying causes of moss growth by improving drainage and sunlight exposure where possible. This might involve strategic tree pruning or installing French drains to redirect water flow away from problem areas.
For roofs (especially common on older bungalows), we apply preventative treatments in early fall before the heavy rains begin. This helps preserve cedar shake roofs common in neighborhoods like Laurelhurst. On hardscapes, we use a two-step process: first removing existing moss with specialized tools that don't damage surfaces, then applying a protective coating.
We also address the underlying causes of moss growth by improving drainage and sunlight exposure where possible. This might involve strategic tree pruning or installing French drains to redirect water flow away from problem areas.
Our Process
- 01 Step 1: Assessment of moss/mildew type and surface material
- 02 Step 2: Gentle mechanical removal where needed
- 03 Step 3: Application of eco-friendly treatment solution
- 04 Step 4: Recommendations for long-term prevention
Benefits
- Safer walkways and driveways during icy winters
- Extended lifespan of roofing materials
- Improved curb appeal
- Reduced slip hazards
Frequently Asked Questions
Is moss treatment safe for my pets?
Our zinc-based treatments are pet-safe once dry (typically within 4 hours). We'll contain the treatment area and provide specific guidance based on your pets' habits.
How often should moss treatment be repeated?
Most Portland homes benefit from annual treatments, though heavily shaded properties in areas like Forest Heights may need semi-annual applications.
Can you treat moss on historic brick?
Yes, we use special low-pressure techniques for vintage brick common in Alphabet District homes, avoiding damage to old mortar.