Black streaks on Colonie roofs are a living algae feeding on your shingles — common on shaded rooflines throughout Loudonville and Shaker Heights. We kill it with a shingle-safe soft wash.
Serving
Colonie, NY
Roof Washing in Colonie
Drive through Loudonville or the older sections of Newtonville and you'll see it on nearly every third roof: dark streaking running down the north-facing slope, usually worse under a canopy of mature maples. That's gloeocapsa magma, a algae that feeds on the limestone filler in asphalt shingles and spreads fastest where shade keeps the roof damp.
Colonie's tree-heavy residential streets — especially around Shaker Heights and the older ranch neighborhoods off Central Ave — create exactly the shaded, slow-drying conditions this algae needs. Add in humid summers pushed up from the Hudson and Mohawk river valleys, and a roof that goes unwashed for five or six years can end up losing shingle granules well before its time.
Pressure washing strips the stains but also strips warranty coverage and granules right along with it. Our ARMA-approved soft wash applies a professional cleaning solution from the ground or ladder, kills the algae on contact, and rinses at low pressure — no foot traffic on brittle shingles, no voided warranty, and streaks that stay gone far longer than a pressure rinse.
Local Conditions
Colonie sits between the Mohawk and Hudson river valleys, and its mature suburban tree canopy — especially in Loudonville and Shaker Heights — keeps rooflines shaded and damp well after a rain. That combination is a near-perfect algae incubator.
Decades-old maples and oaks in Loudonville and Shaker Heights shade north-facing roof slopes for most of the day, slowing dry-out time.
Colonie sits between the Hudson and Mohawk valleys, keeping summer air damp enough for algae to thrive on asphalt shingles.
Many mid-century homes off Central Ave and in Newtonville still carry original or first-replacement shingles now well past the algae-resistant window.
Homes near Albany Shaker Road pick up a fine airborne film that mixes with algae growth, darkening rooflines faster than untreated shingles nearby.
Why It Matters
Killing algae at the root protects shingle granules — the layer that actually shields your roof from UV and weather damage.
ARMA-approved, low-pressure soft wash. No pressure washing, no walking on brittle shingles, no voided manufacturer warranty.
We know which streets — Loudonville, Shaker Heights, the ranch blocks off Central Ave — need extra dwell time because of tree cover.
A streaked roof reads as 'old roof' to buyers and neighbors alike. Cleaning it often looks like a full roof replacement at a fraction of the cost.
See Us In Action
This is what we do every day across the Capital Region. Real homes, real crews, real results. No stock photos, no gimmicks — just a clean job done right.
Our Process
We check shingle condition, flashing, and drainage before quoting so you know exactly what you're paying for.
ARMA-approved solution applied from ladder or ground — never walking on wet or brittle shingles.
Gentle rinse followed by a quick gutter and downspout flush so runoff doesn't clog after the wash.
Real Results
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AfterWhat Customers Say
“I just want to thank Capital Pro for doing such a phenomenal job power washing my house. It's like I have a new house! I would recommend them to anyone. And the workers are there to please you. Cause they care!”
Kathy Valason
Google Review · a month ago
“The guys did a great job and the house looks beautiful. My sister drove by and said the same thing — it looks beautiful. They were so nice to talk to and deal with. I have recommended them to my family and friends.”
Leslie Kaufman
Google Review · 3 weeks ago
“In a state of bereavement we reached out and got an earlier date. When we returned from funeral proceedings the house was impeccable. Even areas we had no time to prep for were done. Nice work for sure. Call them — you won't be disappointed!”
Islah Umar
Google Review · 3 weeks ago
“Capital Pro is a wonderful company! Luis and Miller came to my house today and soft washed the exterior and it looks like a brand new house!”
Bonnie Delaney
Google Review · 4 days ago
“Just had my home pressure washed and I am very pleased with the outcome. I have an older home with original siding. Miller took his time and was sure to cover everything.”
Lori Barnett
Google Review · a week ago
“Excellent job cleaning and sealing our stamped concrete patio. Professional and pleasant to deal with. I would recommend Capital Pro to get the job done right!”
Rosemary Trusso
Google Review · a month ago
“I highly recommend Capital Pro Pressure Washing! Communication, professionalism, the house and window cleaning were all outstanding.”
Carol Molino
Google Review · 2 months ago
“This company did a fantastic job at power washing our home! Luis was great at communicating and scheduling. Him and his team were extremely professional.”
Karissa Desofi
Google Review · a month ago
“Can't say enough good things! From the moment the team showed up, the crew was friendly, professional, and just easy to work with. They cleaned our pavers and everything looked amazing.”
Charles Ellis
Google Review · 2 months ago
“Excellent cleaning job. The siding, decks, and front porch are all refreshed. It is looking like a new house.”
Mark Younger
Google Review · a month ago
“Our siding was looking dull and had green algae on the north side — it was embarrassing! Luis and his team came out and made the entire house look brand new.”
Nikii Narváez
Google Review · 11 months ago
“Very happy with the work Luis and his team did. Communication was great. Very professional. Fair pricing. We would definitely recommend Capital Pro.”
Ronni Edwards
Google Review · a month ago
“Very professional, great service, and great contact regarding when they would come. My house and windows are sparkling. Highly recommend for anyone looking for power washing.”
Linda Hayen
Google Review · a week ago
“We had a great experience with Capital Pro Pressure Washing. The team was very professional, pleasant to work with, and offered fair pricing. Our house came out looking great.”
Tony Felt
Google Review · 10 hours ago
“Capital Pro Pressure Washing did an excellent job washing our home. We have had it washed before but the job Capital Pro did far surpassed what was done previously.”
Sil Young
Google Review · a week ago
“They did an excellent job washing my house. Very knowledgeable and friendly to work with. I would highly recommend them.”
Michael Worden
Google Review · a month ago
“This company is great! We just had our house pressure washed. The crew was friendly, efficient and neat. The job wasn't finished until they got every spot.”
Pamela DeMarco
Google Review · 2 months ago
“This company did a great job taking extra care not to hurt my tulips. Highly recommend for their excellence and cost. Thank you Capital Pro!”
Colleen Malloy
Google Review · 2 months ago
“Great communication, showed up right on schedule, house came out looking better than I thought was possible. Also was done for a great price! Will definitely be using Luis again!”
Dana Bowen
Google Review · 9 months ago
“Capital Pro is a wonderful company! Luis and Miller came to my house today and soft washed the exterior and it looks like a brand new house!”
Bonnie Delaney
Google Review · 4 days ago
“Just had my home pressure washed and I am very pleased with the outcome. I have an older home with original siding. Miller took his time and was sure to cover everything.”
Lori Barnett
Google Review · a week ago
“Excellent job cleaning and sealing our stamped concrete patio. Professional and pleasant to deal with. I would recommend Capital Pro to get the job done right!”
Rosemary Trusso
Google Review · a month ago
“I highly recommend Capital Pro Pressure Washing! Communication, professionalism, the house and window cleaning were all outstanding.”
Carol Molino
Google Review · 2 months ago
“This company did a fantastic job at power washing our home! Luis was great at communicating and scheduling. Him and his team were extremely professional.”
Karissa Desofi
Google Review · a month ago
“Can't say enough good things! From the moment the team showed up, the crew was friendly, professional, and just easy to work with. They cleaned our pavers and everything looked amazing.”
Charles Ellis
Google Review · 2 months ago
“Excellent cleaning job. The siding, decks, and front porch are all refreshed. It is looking like a new house.”
Mark Younger
Google Review · a month ago
“Our siding was looking dull and had green algae on the north side — it was embarrassing! Luis and his team came out and made the entire house look brand new.”
Nikii Narváez
Google Review · 11 months ago
“Very happy with the work Luis and his team did. Communication was great. Very professional. Fair pricing. We would definitely recommend Capital Pro.”
Ronni Edwards
Google Review · a month ago
“Very professional, great service, and great contact regarding when they would come. My house and windows are sparkling. Highly recommend for anyone looking for power washing.”
Linda Hayen
Google Review · a week ago
“We had a great experience with Capital Pro Pressure Washing. The team was very professional, pleasant to work with, and offered fair pricing. Our house came out looking great.”
Tony Felt
Google Review · 10 hours ago
“Capital Pro Pressure Washing did an excellent job washing our home. We have had it washed before but the job Capital Pro did far surpassed what was done previously.”
Sil Young
Google Review · a week ago
“They did an excellent job washing my house. Very knowledgeable and friendly to work with. I would highly recommend them.”
Michael Worden
Google Review · a month ago
“This company is great! We just had our house pressure washed. The crew was friendly, efficient and neat. The job wasn't finished until they got every spot.”
Pamela DeMarco
Google Review · 2 months ago
“This company did a great job taking extra care not to hurt my tulips. Highly recommend for their excellence and cost. Thank you Capital Pro!”
Colleen Malloy
Google Review · 2 months ago
“Great communication, showed up right on schedule, house came out looking better than I thought was possible. Also was done for a great price! Will definitely be using Luis again!”
Dana Bowen
Google Review · 9 months ago
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