Premium Exterior Care
Professional Roof Cleaning Services in The Boston MetroWest
Black streaks, moss, and algae don't just look bad—they can damage your roof over time. Dharma Surface Cleaning provides a professional roof soft wash throughout The Boston MetroWest. Our safe, low-pressure methods eliminate harmful organic buildup without damaging your shingles, helping your roof last longer and look like new.
Our Safe Methods
Safe Roof Soft Washing Services
Roofs should never be cleaned with excessive pressure. High-pressure washing can damage shingles, loosen granules, and shorten the lifespan of roofing materials.
Dharma Surface Cleaning uses professional roof soft washing methods designed to safely remove:
- Black streaks
- Algae buildup
- Moss
- Mildew
- Dirt and debris
- Organic staining
Our low-pressure cleaning process treats buildup at the source while protecting the integrity of your roof.
Soft Wash Care
Low-pressure shingle protection
Value & Aesthetics
Restore the Appearance of Your Roof
Dark roof streaks and moss buildup can make an otherwise well-maintained home look aged and neglected. Professional roof cleaning helps restore a cleaner appearance while improving the overall curb appeal of your property.
Benefits of roof cleaning include:
Removal of algae and staining
Reduced organic buildup
Enhanced curb appeal
Improved roof appearance
Protection against premature wear
Cleaner overall exterior appearance
Routine roof maintenance can also help prevent buildup from spreading and causing long-term surface deterioration.
Professional Cleaning for Different Roofing Surfaces
Different roofing materials require different cleaning approaches. Our team carefully evaluates your roof to determine the safest and most effective soft washing method for your property.
Asphalt shingle roofs
Residential roofing systems
Composite roofing
Commercial roofing surfaces
Our roof cleaning process is designed to deliver effective results while helping preserve the condition of your roofing materials.
Our Standard
Why Choose Dharma Surface Cleaning?
Homeowners throughout The Boston MetroWest and nearby communities continue to choose Dharma Surface Cleaning because of our:
Over 33 years of experience
Safe soft washing methods
Reliable service
Attention to detail
Honest communication
Professional workmanship
As a licensed and insured owner-operated company, we take pride in helping homeowners maintain cleaner and better-protected properties.
our work
Featured Project Restorations
Roof Restoration
BEFORE
AFTER
BEFORE
AFTER
Why would I want to clean my roof?
So you might say "Why would I want to clean my roof? That's the way a roof is supposed to look...right?. Why "waste" the money?" Well, there a couple of reasons why it is important to clean a slate roof. The first reason is that it simply looks fresh and bright but the most important reason is Winter Weather in New England. Almost without exception, slate problems occur where snow, moss or algae has lain on the slate surface for prolonged periods. In cases where trees are not hanging over a roof, the surface is problem free (trees create a fertile environment beneath them that fosters moss, algae and lichen growth which holds moisture and snow in place). In winter as the daytime sun melts some of the snow, the water falls into the slate through fissures and cracks and absorbs into the slate. At night it freezes and expands, widening the cracks and pores, providing larger cavities for the next days melting water. The cycle continues with tremendous expansion and contraction of the slate around the cracks. A once strong and solid surface has become broken and flakey. This situation will requires expensive repair or replacement. The best way to eliminate or reduce this problem is to eliminate the algae, moss and fungus.
Important Note: Proper surface cleaning involves either physical scrubbing or some level of pressure to remove the plaque and fertile substrate. There are several enterprises out there marketing products that they claim do not require rinsing. "Spray and Forget" and other "No Rinse Roof Treatments" are good starts but do not remove the foundation which will only invite regrowth in a very short time, sometimes in only a few months. We all know that mouthwash alone doesn't make for healthy oral hygiene, and that brushing and flossing are necessary. It's no different with roofs, siding, decks, or any other surface. There is lots of documentation on this. Common sense also works.
Lichen will completely digest the silica grit, exposing bare asphalt. This will not be so visible on a darker shingle. It is important the silica granules remain on an asphalt shingle roof so that they can do the job of reflecting the sun's rays. Use of proper cleansers and a low pressure rinse will ensure that your silica granules remain intact.
There was enough lichen and moss on this 25 year old cedar shake roof....
to support a habitat for tree frogs. Once restored, this roof looks nearly new even after all these years. This is mostly due to two factors. One; the lack of strong sun at the location of this particular home and two; these shingles were handsplit tapered shakes. Nothing really can compare to these. They will absorb a lot of abuse. Nonetheless, there were some rotting on the edges
If we all lived on Nantucket...
...the airborne sea salt would cure and preserve the cedar shingles for us, which would prevent wet rot.
Cleaning Asphalt Shingles
Cleaning an asphalt roof involves proper detergents and very low pressure. Without the proper solutions the novice is prone to rely too much on pressure alone, which will damage the shingle by removing the grit.
Shingle Shield has some effectiveness
The maintenance free roof protector. Protect the appearance of that new, or just cleaned roof with Shingle Shield Roof Protector zinc strips. These strips are engineered to provide long term protection from fungus, moss, and algae. Simply install one row at or near the roof ridge line to protect the entire roof. Shingle Shield zinc strips react with rain water to release powerful, non-toxic, fungistatic compounds of zinc oxide. For best results, thoroughly clean and disinfect the roof prior to installing zinc strips. 20+ years is the expected period of protection.
Trusted Exterior Cleaning Professionals
Dharma Surface Cleaning is proud to be recognized for quality service and customer satisfaction.
Our Recognitions
These recognitions reflect our commitment to dependable service and professional exterior cleaning results.
Serving The Boston MetroWest & Surrounding Areas
We proudly provide roof cleaning services throughout The Boston MetroWest and surrounding communities, including:
If you are unsure whether you are within our service area, contact us and we will be happy to help.
Schedule Your Roof Cleaning Service Today
If your roof is showing signs of black streaks, algae, moss, or surface buildup, Dharma Surface Cleaning is ready to help restore its clean appearance safely and effectively.