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.
Old Westbury, NY
Slate roof cleaning in Old Westbury
Big old trees and deep shade make Old Westbury slate a magnet for growth. This brick Georgian sat under a huge shade tree. We've also cleaned estates nearby in Brookville and East Norwich.
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.
BeforeAfterOur work in and near Old Westbury
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.
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: Brookville · Locust Valley
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