John Expert Roofer is a roofing contractor located at 15 Bryant Ave in Roslyn, NY. We work with homeowners and property owners in Roslyn and surrounding Long Island communities who want their roofs handled with care and their questions answered plainly.
How We Approach Every Roof
Roofing decisions can feel overwhelming, especially when water is coming through a ceiling. Our approach is simple: inspect first, explain what we find and then recommend the work that fits the situation. Sometimes that means a targeted roof repair. Sometimes it means a full roof replacement. Either way, you will understand why.
What We Value
- Clear communication. We explain problems and options in everyday language.
- Attention to detail. Flashing, underlayment and ventilation matter as much as the shingles you see.
- Respect for your property. We protect the work area and clean up when the job is done.
- Honest recommendations. We will not push a bigger project than your roof needs.
Homes and Businesses
Our work spans residential roofing for single-family homes and commercial roofing for storefronts, offices and mixed-use buildings. We work on both pitched shingle roofs and low-slope flat roofs.
Rooted in Roslyn
Being local means we understand the weather patterns that affect roofs here, from nor'easters and summer thunderstorms to winter ice. It also means we are nearby when you need us. Read our roofing blog for practical advice written for Long Island homeowners.

