Roof Cleaning
Remove Moss and Algae, Extend Roof Life
Those dark streaks and green patches on your roof aren't just unsightly, moss, algae, and lichen actually feed on and degrade roofing materials, shortening your roof's life. Professional cleaning removes them safely and protects your investment.
Roofs need gentle handling. Soft washing uses low-pressure water and cleaning solution to lift growth without damaging shingles, which is why this is a job for a pro rather than a high-pressure DIY blast that can void your warranty.
Abode connects you with local roof cleaning pros. Compare specialists, understand the cost, and add years to your roof's life.
Did You Know?
Roof algae and moss can shorten a roof's lifespan by years, meaning a few hundred dollars of cleaning can defer a five-figure roof replacement.
Roof Cleaning Cost. How Much Do Projects Cost?
Most projects run between $400 and $1,200. The average price is typically around $700. The $400 to $1,200 range covers one soft-wash visit on a typical 2,000 square foot roof, and most crews enforce a job minimum so a very small roof does not price below it. The table prices per square foot of roof area rather than as project totals, so those rates will not add up to the range above, and moss or algae treatment is frequently billed as a separate chemical charge rather than as part of the wash price.
Typical duration: 2 to 4 hours
| Cost Factor | Typical Range | Notes |
|---|---|---|
| Roof size | $0.25-$0.75 per sq ft of roof area | About $400-$1,200 on a 2,000 sq ft roof, and the rate per sq ft drops as the roof gets larger |
| Roof pitch | +$0.15-$0.20 per sq ft for a steep roof | A pitch of 8/12 or steeper adds 20 to 40 percent, each additional story about $0.10 per sq ft, and dense landscaping or hard access $100-$300 |
| Growth severity | $0.20-$0.75 per sq ft for moss removal | Heavy or years-old algae adds $0.10-$0.25 per sq ft, and moss treatment is often a separate chemical charge with a follow-up prevention treatment at $100-$350 |
Cost data verified August 26, 2026. How we source cost data.
08/26/2026
Signs You Need Roof Cleaning
- Dark streaks or stains on the roof
- Green moss or algae patches
- Lichen growth on shingles
- A roof that looks aged or dirty
- Debris trapped in roof valleys
Is It Right For You?
Who It's For
- Homeowners with visible moss, algae, or streaking
- Anyone protecting roofing materials and curb appeal
Who It's Not For
- Roofs needing repair or replacement instead
- Minor discoloration not affecting the roof
What to Watch Out For
High pressure can damage shingles and void warranties
Periodic cleaning may be needed in damp climates
Alternatives to Consider
| Alternative | Better When | Worse When |
|---|---|---|
| DIY cleaning | Saves the fee | High pressure risks damaging shingles and is unsafe at height |
| Leaving it | No cost now | Growth degrades the roof and shortens its life |
Is It Worth It?
Roof cleaning is worth it because removing moss and algae protects roofing materials and can add years of life, deferring a far costlier replacement.
Questions to Ask Your Pro
- Do you soft-wash to protect my shingles and warranty?
- Will the cleaning solution harm my landscaping?
- How long before the growth is likely to return?
Frequently Asked Questions
A soft-wash roof cleaning typically runs $400 to $1,200, averaging around $700, or roughly $0.25 to $0.75 per square foot of roof area.
The main drivers are roof size and pitch, the roofing material, and the level of moss, algae, or lichen growth that needs removal.
Steeper roofs are harder to clean and may require special equipment or safety measures, which increases labor cost. A pitch of 8/12 or steeper adds 20 to 40 percent, and each additional story roughly $0.10 per square foot.
Yes. Delicate asphalt shingles need gentle cleaning to avoid damage, while metal roofs can handle more rigorous techniques.
Removing moss and algae prevents them from degrading roofing materials, extends the roof's lifespan, and can improve energy efficiency and curb appeal.
