Before
AfterBrick colonial with dormers and a cupola
Green moss and algae streaks covered the front slopes. Same angle before and after.
Before and after
Slate roofs we've cleaned
Every photo here is our own work. We list jobs by town only. Many befores show heavy lichen or moss; most afters were taken the day we finished, before weather had cleared everything.
BeforeAfter
Locust Valley, 2024. Drag to compare.
BeforeAfter
Before
AfterStucco Tudor with stone and slate
Dark streaks ran down every slope. Cleaned from a ladder with a standoff, never walked on.
Before
AfterBrick Georgian under a big old tree
Heavy shade left the slate dark with growth. Ladder with a standoff, nothing resting on the roof.
Before
AfterGeorgian-style home
Applied from ladders with standoffs, so nothing rests on the slate or gutters.
Before
AfterPrivate club clubhouse
Large institutional slate roof cleaned in 2026.
Before
AfterTudor with thick, textured slate
Heavy, hand-split slate cleaned without scrubbing or scraping.
Before
AfterShingle-style home with colorful slate
Dark growth removed from the full front roof.
Before
AfterFarm-style estate
Heavy purple-black staining gone. Bright multicolor slate back.
Before
AfterIvy-covered brick estate
Dark staining removed from a long roofline. The ivy and copper cupola were left untouched.
Before
AfterBrick ranch with snow guards
Photographed from nearly the same spot before and after.
Before
AfterClassic colonial with snow guards
Dark staining cleared from the main roof and dormer.
Before
AfterLarge brick estate, rear
The whole rear roof back to clean grey slate.
Before
AfterStucco Tudor with steep gables
Pastel multicolor slate restored on steep gables.
Before
AfterStone and shingle home
Multicolor slate cleaned and back to its natural colors.
Stone home with multicolor slate, rear
Multicolor slate after cleaning.
More angles
Before
AfterLeft wing, same house
Moss and algae cleared from the lower slopes and dormers.
Before
AfterEntry and cupola
Cleaned around the cupola and entry roof without walking the slate.
Before
AfterSame home, closer view
Dark staining gone from the full front slope and dormers.
Before
AfterClubhouse dormer, close up
Growth cleared around the dormer trim and flashing.
Before
AfterMunsey Park Village Hall
We cleaned the slate roof on Munsey Park Village Hall.
Before
AfterMunsey Park Village Hall, side
Long slate slope and dormers, cleaned evenly end to end.
Before
AfterStone Tudor with a slate turret
A curved, conical slate roof cleaned evenly. Curved slate is some of the hardest to get right.
Before
AfterSame home, front
Lichen and dark staining removed across the main roof and turret.
Before
AfterTudor with multicolor slate
Orange lichen removed. The original colors in the slate came back.
Before
AfterSame home, another angle
Lichen cleared from the main slope and dormer.
Before
AfterSame home, side and deck
Gables and the roof above the deck, cleaned from ladders.
Before
AfterSame estate, side view
The full length of the roofline, cleaned evenly.
Before
AfterPool house on the same property
We clean every slate roof on the property, not just the main house.
Before
AfterSame estate, front
Front gables and porch roof cleaned.
Before
AfterSide slope with snow guards
Snow guards and the copper ridge stayed in place, untouched.
Before
AfterDetached garage
Moss and lichen gone from the garage roof.
Before
AfterBrick colonial with snow guards
Ladder with a standoff keeps weight off the slate and gutters.
Other roofs
The same careful soft wash for clay tile, cedar and shingle.
Before
AfterTudor with a clay tile roof
Lichen spots and dark staining removed. Warm terracotta color back.
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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