- SINCE 1979 — ROCKLAND, NY & BERGEN, NJ
Roof Care
Made Easy
For over 45 years, A & J Reliable has protected homes across Rockland and Bergen County, NJ — repairs, washing, and gutters, done right the first time.
Roof Repair
Repairs that stop small issues before they grow.
Roof Washing & Cleaning
Removes stains, algae, and moss — without pressure damage.
Gutter Cleaning & Guards
Keeps roof water flowing off with clean gutters and guards.
LICENSED & INSURED
Rockland, NY # H-11346-A3-00-00
New Jersey # 13VH00601300
GAF
Certified Installer
Owens Corning
Preferred Contractor
4.9 ⭐⭐⭐⭐⭐
(1256) Google Reviews
- SERVICES
Roof repair. Roof washing. Gutter cleaning.
Three services we run every week across Rockland and Bergen County — backed by full roofing and gutter capabilities when a job calls for more.
Specialists, not generalists.
More than four decades cleaning and roofing the specific houses Westchester is built from. We know how to soft wash a slate roof, a cedar roof, and a delicate copper accent without harming any of them.
- Roof Washing · Westchester County, NY Soft Wash Roof Cleaning · Westchester County, NY
Roof Washing in Westchester County, NY
Those black streaks, green patches, and crusty spots on your roof are not just dirt. They are living growth feeding on your shingles, and left alone they shorten the life of your roof. Our non-pressure soft washing kills the algae, moss, and lichen at the root and brings your roof back to its true color, safely, without the high-pressure water that wrecks roofing materials. We are NJ-licensed and based just across the state line in Nanuet, minutes from Bergen. Before you spend on a new roof, find out whether yours just needs to be cleaned.
Trusted by homeowners since 1979
- Why A&J Reliable
Complete Roof Washing Services in Westchester County
The homes in Westchester aren’t all the same, and neither are the roofs that need cleaning.
From the slate and copper of Bedford estates to the cedar and Tudor details of Scarsdale and Bronxville to the asphalt shingles on a White Plains ranch, this county is full of roofs that demand a careful hand. Many of these materials are delicate, historic, and expensive to replace. The wrong cleaning method does not just fail to clean them. It damages them.
That is why we never pressure wash. A Scarsdale slate roof is not a Yonkers asphalt two-family. A copper-accented Tarrytown estate is not a postwar Colonial. The right way to clean a roof starts with understanding the roof beneath the grime.
That’s local knowledge. That’s Westchester roof washing. That’s A&J Reliable.
What Westchester Does to a Roof
- Mature tree canopy. Westchester's tree cover is part of why people love it, and part of why roofs here grow moss and algae so fast. North-facing slopes stay shaded and damp, gutters clog, and leaf debris traps moisture against the shingles. This is the single biggest driver of roof growth in the county.
- Humid summers. Long, humid Northeast summers feed Gloeocapsa magma, the blue-green algae behind those black streaks. Once a few spores land, it multiplies and spreads across the whole roof.
- Snow, ice, and freeze-thaw. Moss holds moisture against the roof through the winter, and that trapped water makes freeze-thaw damage worse. Cleaning the growth off is part of protecting the roof through the cold months.
- Leaf litter and nor'easters. Falling leaves and wind-driven debris pile into valleys and behind chimneys, holding moisture and feeding growth long after the storm passes.
What This Means for Your Roof Washing
We do not quote a roof wash off a photo. On a Westchester home we are looking at the roofing material first, because slate, cedar, copper, and asphalt each call for a different approach. We identify whether you are dealing with algae, lichen, moss, or all three, since lichen and moss root in and take longer to clear. We look at the pitch, the shaded slopes, the landscaping we need to protect, and the age of the materials underneath. Then we clean it the right way for that specific roof.
- Why A&J Reliable
Four reasons Westchester homeowners have trusted us with their roofs since 1979.
More than four decades of residential roofing and roof care across NY, NJ, and CT, with a process built around the families living underneath.
- 01 / Expertise
Specialists, not generalists.
More than four decades cleaning and roofing the specific houses Westchester is built from. We know how to soft wash a slate roof, a cedar roof, and a delicate copper accent without harming any of them.
- 02 / Philosophy
We build relationships, not transactions.
Most of our Westchester work comes from homeowners we have served before, and from their neighbors. That is the standard: the kind of work that earns the next call on your street.
- 03 / Legacy
Forty-plus years of proof.
- 04 / Materials
A safe, proven cleaning system.
We use only non-pressurized, biodegradable cleaners that kill algae, moss, and lichen at the root. Powerful, effective, and safe for your roof, your landscaping, and your home. Backed by our 2-year warranty.
- THE BENEFITS OF ROOF WASHING
Why a clean roof is worth it in Westchester.
The #1 Reason Homeowners Call Extend the Life of Your Roof
Add Years · Avoid Premature Replacement
Algae, moss, and lichen feed on your shingles and the granules that protect them. Left untreated, they shorten the life of the roof and can push you toward a replacement years too early. Killing the growth at the root protects what you already have and helps your roof reach its full lifespan.
Instant Curb Appeal Restore Your Roof's Original Color
Immediate, Visible Results
The black streaks and stains come off, and your roof returns to the color it was meant to be. The algae is gone by the time our truck leaves your property. The difference from the street is dramatic, and it is the fastest way to refresh the look of your entire home.
Protect Your Investment Add Value at Appraisal or Sale
Higher Resale Appeal
In a market like Westchester’s, a clean roof signals a well-maintained home. A stained, mossy roof makes buyers and appraisers wonder what else was neglected. A roof wash is a small cost that protects the value of one of your largest assets.
Lower Your Energy Bills Reduce Summer Cooling Costs
Energy Savings
Those dark algae stains absorb heat and drive up the temperature in your attic and home. Removing them helps your roof reflect heat the way it should, which can ease the load on your cooling in the summer months.
Stop the Damage at the Root Kill Algae, Moss, and Lichen for Good
Prevent Rapid Regrowth
Blasting growth off the surface leaves the spores behind, so it grows right back. Our non-pressure method kills the spores and roots, so the roof stays clean far longer. It protects the shingle granules and keeps you on the right side of your manufacturer warranty.
A Healthier Home Exterior Control Mold and Mildew
Cleaner Roof and Surfaces
Roof growth does not stay on the roof. It spreads to siding, walkways, and shaded exterior surfaces. A proper roof wash helps control mold and mildew across the exterior of your home, not just the shingles.
- Not sure
If your roof needs washing?
- Why A&J Reliable
OUR ROOF WASHING PROCESS
Four steps from first call to final rinse. Since 1979, every Westchester job has followed the same proven process. No surprises, no shortcuts, no contractor games.
1. Free Roof Inspection
We inspect the roof and identify the growth and the roofing material, so we clean it the right way for your specific home.
2. Review Your Custom Quote
3. Soft Wash Treatment
4. Results and Follow-Up
- Service Area
TOWNS WE SERVE IN WESTCHESTER
More than four decades of local relationships across the county. We know which river towns grow the worst moss on their north-facing slopes, and which historic districts expect a careful hand. Find your town below. Chances are we have already worked on a house on the next street over.
- Yonkers
- New Rochelle
- Mount Vernon
- White Plains
- Scarsdale
- Bronxville
- Eastchester
- Tuckahoe
- Rye
- Harrison
- Mamaroneck
- Larchmont
- Pelham
- Hastings-on-Hudson
- Dobbs Ferry
- Irvington
- Tarrytown
- Sleepy Hollow
- Ossining
- Croton-on-Hudson
- Peekskill
- Pleasantville
- Chappaqua
- Mount Kisco
- Katonah
- Bedford
- Pound Ridge
- Recent Roofing Work
See the work, then call us.
Do you pressure wash roofs?
No, never. Pressure washing strips the protective granules from shingles, can crack slate and tile, and forces water under flashing and siding. It also leaves the spores behind, so the growth returns fast. We use a non-pressure soft wash that cleans safely and kills the growth at the root.
Is soft washing safe for slate, cedar, and copper roofs?
Yes. Our non-pressurized, biodegradable method is designed for exactly the delicate and historic materials Westchester homes are full of. It cleans them thoroughly without the damage high pressure causes.
How soon will I see results?
The algae is gone by the time we leave. Lichen and moss take longer, drying, changing color, and flaking off over the next two to three weeks, with the rain rinsing away the rest.
How long does a roof washing last?
Because we kill the spores and roots rather than just rinsing the surface, results last far longer than power washing. How long depends on shade and tree cover, which is why heavily canopied river-town lots may need it more often than open, sunny ones. The work is backed by our 2-year warranty.
Will the cleaning solution harm my plants or landscaping?
We protect your landscaping throughout the job, and our cleaners are biodegradable. Care for your property is part of the process, not an afterthought.
When is the best time to wash a roof in Westchester?
We clean roofs through most of the year and work around the seasons. If your roof is heavily stained, the sooner it is treated the better, since lichen and moss only get harder to remove with time.
Your Roof Deserves the Attention
Homeowners often do not think about the roof until there is a problem, and by then it is frequently too late. If no one has cleaned or inspected your roof in the past two years, it is time. Stop the damage, protect your investment, and bring your roof back to life.
The Most Reliable Roofing Contractors in the Tri-State Area Covering the New York, New Jersey, & Connecticut Area Since 1979.
50 Second Ave, Suite A
Nanuet, NY 10954
Phone: (877) 492-9014
Email: contact@ajreliable.com
