Before
AfterStone Tudor with a slate turret
A curved, conical slate roof cleaned evenly. Curved slate is some of the hardest to get right.
Manhasset, NY
Slate roof cleaning in Manhasset
Manhasset has some of the finest old slate roofs on Long Island. We've cleaned a stone Tudor with a slate turret, Munsey Park Village Hall, a private club's clubhouse, and homes in neighboring Plandome.
We soft-wash slate from ladders and never walk on it. No pressure washing, no scraping. Most roofs look 80 to 90% better the day we finish.
BeforeAfter
Manhasset, 2024. Drag to compare.
Our work in and near Manhasset
BeforeAfter
Before
AfterMunsey Park Village Hall
We cleaned the slate roof on Munsey Park Village Hall.
Before
AfterPrivate club clubhouse
Large institutional slate roof cleaned in 2026.
Before
AfterGeorgian-style home
Applied from ladders with standoffs, so nothing rests on the slate or gutters.
Before
AfterSame home, front
Lichen and dark staining removed across the main roof and turret.
Before
AfterClubhouse dormer, close up
Growth cleared around the dormer trim and flashing.
How we clean slate
We explain the process
Before any work starts, you know exactly what we'll do and what to expect.
We protect the property
Plants, gutters and copper get noted and protected. Landscaping is rinsed the whole time.
We soft wash from ladders
Low-pressure treatment applied from ladders. No one steps on the slate.
Weather finishes the job
The slate is not rinsed. Rain clears the dead growth over the next 6 to 8 weeks.
Nearby: Port Washington · Great Neck · Sands Point
Free quote
Find out what your roof needs
Call, text or send the form. Tell us the town and what you're seeing on the roof.
Call or text 631-433-2703
- We never walk on slate
- No pressure washing
- 2-year guarantee on full roof cleanings
- Licensed and insured, 13+ years in business
- Owner on every job