Our roof cleaning methods are tailored for Halifax’s unique coastal climate, where damp conditions and shaded areas increase moss, algae, and lichen growth.
Roof cleaning & moss removal in Halifax, NS
ProCare Halifax is HRM’s leading roof cleaning specialist. Fully licensed, insured, and BBB accredited, we provide eco-friendly and roof-safe treatments for algae, moss, and lichen, including complimentary gutter cleaning and a 2-year limited warranty with every roof wash.
Why roofs grow moss in Halifax?
Roofs in Halifax and nearby HRM communities, including Bedford, Fall River, Hammonds Plains, and Timberlea, are prone to moss due to the region’s coastal climate and abundant moisture. Frequent rainfall, humidity, and morning fog create consistently damp conditions, while shaded and tree-covered areas allow moisture to linger on shingles longer. North-facing slopes are especially susceptible, as they receive less direct sunlight, which slows drying after rain.
These same damp, shaded conditions that encourage moss on roofs can also affect other parts of your home, including house siding, decks, and walkways. Moisture and limited sunlight create ideal conditions for algae, mildew, and moss to grow, which is why professional cleaning and preventative treatments help protect your entire home exterior.
Before and after heavy moss removal in South End of Halifax, NS.
Common roof problems we treat in Halifax
(Algae, Moss, Lichen)
Black streaks on roofs
Black streaks are caused by Gloeocapsa magma, a type of blue-green algae. It is not dirt or mold, but an airborne bacteria that is alive and feeds on the limestone filler in your asphalt shingles. As it spreads, it causes dark streaks to form, which weaken the shingles over time, making them brittle and shortening their lifespan.
Moss growth on roof shingles
Moss growth is very common on roofs in wooded and damp areas in Rockingham, Grand Lake, and Williams Lake, where shade and moisture allow it to spread easily. It is a pillowy plant that works under the shingle edges as it spreads. It can grow between where shingles overlap, curling up and allowing more water to seep underneath.
Lichen patches on shingles
Unlike moss or algae, lichen is a symbiotic organism (a combination of fungus & algae) that attaches to shingles, often in shady or damp areas. Lichen creates acid to form hard, crusty patches and uses its roots to feed on limestone in asphalt shingles. As it grows, it weakens the shingles, leading to leaks, rot, and structural damage.
Before and after aerial view of black streak removal on an asphalt roof in Fall River, NS.
Our roof wash process
- Pre-inspection: We assess your roof’s condition, take photos, and identify growth or stains so you can see exactly what we address
- Property protection: We confirm that all outdoor furniture, valuables, and potential hazards are cleared from the work area. Our team follows a plant protection protocol to safeguard your landscaping before we begin
- Application: We use low-pressure soft washing tailored to your roof’s needs, effectively removing moss, algae, and lichen without damaging shingles
- Rinse & clean: All cleaning agents and roof debris are thoroughly rinsed and removed, leaving your roof and property clean and ready to use
- Post-service report: We provide a summary of our work along with photos so you can see the results on every surface
Our roof cleaning service areas
We work throughout the Halifax Regional Municipality, including Halifax, Dartmouth, Bedford, Clayton Park, Sackville, Hammonds Plains, Fall River, Enfield, Eastern Passage, Tantallon, Terrance Bay, and more.
If you are on the South Shore, we have expanded our reach to include Hubbards, Chester, and Lunenburg. If you don’t see your community listed, give us a call at 902-456-2760 or send us a message to see when we will be in your neighbourhood.
Our team demonstrating roof washing with freshly applied solution.
Our team safely cleaning a roof with fall-arrest equipment in Halifax’s Northwest Arm.
Why Halifax homeowners choose ProCare Halifax
- HRM’s leading roof cleaning specialists
- Limited two-year roof wash warranty included
- Complimentary gutter cleaning with every roof wash
- BBB Accredited, licensed, and fully insured
- Roof-safe soft wash methods with defined procedures
- Fall-arrest certified
- Free estimates. Transparent scope and no pressure
- Bundled savings packages
Please note: Complimentary gutter clearing refers to removing internal debris to support proper drainage and does not include exterior gutter brightening.
Halifax roof cleaning FAQs
What is roof cleaning?
Roof cleaning is the professional removal of moss, algae, lichen, and black streaks from your roof using a controlled, low-pressure soft washing method.
In Halifax’s damp climate, organic growth thrives on asphalt shingles. Over time, this growth traps moisture, lifts shingles, and shortens your roof’s lifespan. Professional roof cleaning safely treats and eliminates the growth at its source without damaging the shingles.
Unlike pressure washing, which can strip granules and void warranties, roof cleaning uses a specialized treatment that:
- Kills moss and algae at the root
- Gently removes staining and black streaks
- Protects shingle integrity
- Helps extend the life of your roof
- Improves curb appeal immediately
Is it algae or moss on my roof?
Moss often appears as small green, hair-like fuzz or patches. Moss will spread and grow up the pitch of the roof, which causes shingles to lift or curl. The lifting of shingles will eventually bring unwanted water into a building causing moisture damage, wood rot, and even roof leaks.
Algae are flat black stains or streaks, with a slimy or slick green sheen. Algae thrives in damp areas and holds moisture, speeds up the rot that will cause your roof to leak
How much does roof cleaning cost in Halifax?
For an average single-family home in the HRM, homeowners typically invest between $400 and $650 for standard roof cleaning on a 1,500–2,000 sq. ft. home.
☞ For a full breakdown of what affects pricing, read our Roof Cleaning Price Guide
How much will it cost to remove heavy moss from my roof
For most homes in Halifax, light to moderate moss removal typically costs $250–$450 for smaller roofs (1,000–1,500 sq ft.)
On the same-sized home, roofs with heavy moss, steep slopes, or complex roof designs may require more treatment and can range from $400–$750, depending on the condition.
Most homes fall on the lower end of the range, but the exact price depends on roof size, access, and how much moss needs to be safely removed.
☞ For a full breakdown of what affects pricing, read our Roof Cleaning Price Guide
How often should I have my roof cleaned?
Roof cleaning in Halifax varies depending on several things, including your location (for example, how close you are to the ocean), the amount of shade from nearby trees, and local weather conditions. Some roofs may need cleaning more often, while others can go longer between washes.
ProCare offers a 2-year limited warranty on all roof cleaning services.
We can also provide quotes for tree and branch trimming around your roof or home to reduce debris, shade, and the risk of moss or algae growth.
What time of year is best to remove moss from a roof?
While roof cleaning in Halifax can be done above 0°C/32°F, the ideal time of year to remove moss is mid-May through September.
What treatments do you use on the roof?
At ProCare Halifax roof cleaning and moss removal our soft wash solution blends carefully diluted sodium hypochlorite and eco-friendly soaps. It quickly breaks down into oxygen and salt, leaving no harmful residues behind.
Is your roof cleaner safe for pets?
We love our animals, so as a precautionary measure, we ask clients to keep all pets indoors for 3 hours after our roof cleaning process. After being exposed to sunlight and air our cleaning solution quickly breaks down to nothing more than oxygen and common table salt. Our service also includes a pre and post-rinse for any fallen solution.
Is it safe to pressure wash or power wash a roof with shingles?
No! Soft washing is the only safe method for Halifax roof cleaning and moss removal. Pressure or power washing can damage the shingles, resulting in a weakened roof susceptible to leaks and rapid deterioration. Pressure washing your roof could also void your roof manufacturer’s warranty.
Will a roof cleaning treatment permanently stop algae and moss from returning?
Roof cleaning removes existing algae and moss and treats the surface to slow future growth. While no treatment can permanently stop natural regrowth, our professional process is designed to keep your roof cleaner for longer.
We stand behind our work with a 2-year limited guarantee. If algae or moss returns within two years under normal conditions, we’ll come back and re-treat the affected areas at no charge.
Will your solution kill my plants and grass?
No. We take the proper steps to ensure all vegetation is safe. We use biodegradable solutions which we rinse away thoroughly. This includes a pre-rinse, post-rinse, and cover if needed.
Do you clean all types roofs, including metal and cedar shake?
At ProCare Halifax, we service a variety of roof types. However, there are certain roofing materials and pitches we typically avoid due to safety and expertise concerns.
- Metal Roofs: Due to their slippery nature these are done by a case-by-case basis, ensuring the safety and feasibility of the cleaning process for each unique situation.
- Cedar Shake Roofs: These roofs require specialized care and techniques to prevent damage. Given that such expertise is currently outside our service range, we do not offer cleaning for cedar shake roofs.
- Roofs with a Pitch Steeper Than 6/12: Cleaning a steep pitched roof is also done on a case-by-case basis, factoring in specialized safety equipment and challenges in accessing and cleaning the steep surface, all of which are necessary for ensuring the safety of our technicians.
Do you need roof cleaning, repair, or replacement?
When you call ProCare Halifax to deal with moss or roof algae, you get the benefit of roof cleaning inspection. On your own, you may not notice signs of shingle problems or wood rot. ProCare Halifax, on the other hand, can detect these issues and recommend a solution.
Property care bundles
Bundling your services into one visit is the easiest way to get total care for your property while saving money.
Essential
House refresh
This package combines our specialized siding cleaning with professional window detailing. Perfect for annual maintenance or preparing a home for market.
Most popular
ProCare signature
Our top-to-bottom exterior service. Roof soft wash, gutter brightening, house washing, and window cleaning. All in one visit, at our best combined rate.
Flexible
Custom property plan
Flexible exterior maintenance on your terms. Choose the services that fit your property and schedule. Popular with homeowners and property managers who want a consistent annual plan.
Ready for a cleaner roof?
Get a free, no-obligation estimate for roof cleaning in Halifax. We’ll assess your roof, explain what’s involved, and give you a clear quote before any work begins.