How much does roof cleaning cost?
Roof cleaning often costs $250 - $600 for many homes. Soft washing shingle or tile roofs commonly runs $0.15 - $0.60 per square foot, while moss removal, steep pitch, difficult access, plant protection, and gutter cleanup can raise the price.
Roof cleaning should be treated as a roof-material safety job, not ordinary pressure washing. High pressure can damage shingles, tiles, coatings, flashing, and warranties. Ask for the cleaning method before agreeing to the work.
Roof cleaning cost by scope
Soft-wash roof cleaning
$0.15 - $0.60/sq ftHow to tellBlack algae streaks, mildew, or light organic staining on shingles or tile
The fixLow-pressure application, controlled dwell time, rinse where appropriate, and plant protection
Moss removal
$0.20 - $0.75/sq ftHow to tellMoss growing on shingles, under edges, or in shaded roof areas
The fixGentle removal, treatment, and follow-up prevention rather than aggressive scraping
Metal roof pressure washing
$0.20 - $0.70/sq ftHow to tellMetal roofing with dirt, pollen, mildew, or oxidation-compatible cleaning needs
The fixMaterial-safe wash at pressure appropriate for panels, seams, and coatings
Steep, tall, or hard-access roof
$100 - $500+ add-onHow to tellHigh pitch, two or more stories, difficult ladder setup, or limited access around the home
The fixAdd safety equipment, extra labor, and slower work pace
Debris, valleys, gutters, and prevention
$150 - $600+ depending on bundleHow to tellLeaves in valleys, clogged gutters, overhanging trees, or recurring algae/moss
The fixClear debris, clean gutters if included, trim contributing branches, and discuss preventive treatment
Before cleaning a roof
- Confirm the roof material: asphalt shingle, metal, tile, slate, cedar, or flat membrane.
- Ask whether the company will use soft washing, pressure washing, hand removal, or chemical treatment.
- Ask how plants, gutters, siding, runoff, pets, and outdoor furniture will be protected.
- Check the roof age and warranty terms. Some methods can void warranties or accelerate wear.
Unlock the hiring checklist
Use this before you call a roof cleaning, so you know what to ask and what to avoid.
Call a pro when…
- The roof has moss, algae streaks, heavy debris, or slippery shaded areas
- The roof is steep, high, wet, or unsafe to access
- You are not sure whether stains are cosmetic algae or signs of roof damage
- Gutters and roof valleys are filling with debris
- You need the roof cleaned before listing, inspection, insurance review, or exterior work
Repair or replace?
Clean when staining, algae, moss, or debris are the main problems and the roof still has service life left. Repair or replace when shingles are brittle, curling, missing granules, leaking, sagging, or near the end of life. Cleaning an exhausted roof can make damage more visible but will not extend it like a real repair.
Need a cleaner scope before you call around?
Use the roof cleaning checklist to compare the same work, questions, cleanup, and warranty before choosing a local company.
Related questions
Can you pressure wash a roof?
Some metal roofs can tolerate controlled washing, but many roofs should not be pressure washed. Asphalt shingles and many tile roofs are usually better handled with soft washing or gentle moss treatment.
Does roof cleaning remove black streaks?
Often yes. Black streaks are commonly algae staining, and roof-safe soft washing can improve the appearance. The cleaner should protect plants and use a method appropriate for your roof material.
How often should a roof be cleaned?
It depends on shade, trees, moisture, roof material, and climate. Many roofs need cleaning only when algae, moss, or debris becomes visible rather than on a fixed annual schedule.