Gentle, Effective Roof Cleaning for Ottawa Homes.
Most people don’t realize what’s growing on their roof until it starts costing them. Moss and algae thrive in Ottawa’s climate, feeding on your shingles and holding moisture against the surface. That moisture leads to cracking, curling, and rot. Add in black staining from air pollutants or tree coverage, and your roof looks older and wears out faster than it should.
That’s where we come in. Our roof washing in Ottawa uses a soft wash system and plant-safe cleaning solution to kill algae at the root, rinse away moss and grime, and restore your roof, without damaging your shingles or voiding your warranty.
Why Homeowners Trust Markelangelo’s:
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Eco-Friendly Soft Washing
Biodegradable, plant-safe, and effective against moss, algae, and black stains. -
Protects Roofing Materials
Gentle cleaning that won’t strip granules or damage shingles. -
Boosts Curb Appeal
Restore a like-new look and increase your home’s value — great before listing or selling your home. -
Prevents Expensive Repairs
Stop growth that leads to rot, water damage, and costly issues. -
Experienced Crews
Fully trained, insured, and careful with your property. -
Works on Any Roof Type
Shingles, metal, flat — we clean them all.
What Happens If You Skip Roof Cleaning?
Neglecting your roof doesn’t just hurt curb appeal, it can lead to real, costly damage.
Moss and algae trap moisture against your shingles, causing them to rot and decay over time. That moisture can seep into the roof deck itself, leading to structural issues and even interior leaks.
A dirty roof also reflects less sunlight, which means your attic absorbs more heat and your HVAC system works harder — increasing your energy bills. On top of that, a stained or moss-covered roof can lower your home’s value and turn off potential buyers. Regular roof washing is a smart, preventative step that protects your investment and keeps your home looking its best.
Schedule Your Roof Washing Service Today
Don’t wait until moss or algae cause real damage. A professional roof wash adds years to your roof’s life and makes your whole home look better.
Call Markelangelos Roofing today or request your free quote online. Fast, friendly service — done right the first time.
Serving Ottawa & Surrounding Areas
We proudly offer residential and commercial roof snow & ice removal in Ottawa and surrounding communities, including:
Nepean, Kanata, Orleans, Stittsville, Barrhaven, Gloucester, and beyond.
Client testimonials:
Thank you to all your roofers for going above and beyond 🙂
I would recommend to anyone in Orleans that needs roofing repair to hire Markelangelo's. Thanks.
The installation team, led by Stephen, did an outstanding job. He was polite, professional, and incredibly helpful in answering all my questions. On top of that, he went above and beyond by checking my roof and fixing broken shingles, even though it wasn’t part of the contract. He truly treated the job as if he were working on his own home. Stephen was so great to work with that I plan to request him specifically for my upcoming roofing project.
Thanks for the great work!
The pricing was extremely competitive and their guarantee is second to none
The crew was punctual, polite and knowledgeable. Michael was in charge of this very professional crew and made sure everything was done as promised in a timely and tidy manner. They did a great job protecting the property before they started and cleaned up after they were done.
I would not hesitate to recommend this company to anyone in need of a new roof.
Kevin came out took a look at where we had a leak, then looked at the roof and flashing tracing back from the leak. Kevin then proceeded to inspect the attic for any signs of water damage or leaks, and even went up on one of the secondary roofs to check if the boards were stable.
The job was completed in less than two weeks from the time we signed with Markelangelo's Roofing.
We are very pleased with Markelangelo's Roofing and would highly recommend them for any roofing contract.
