Commercial buildings on Long Island often have low-slope or flat roofs with rooftop equipment, parapet walls, drains and numerous penetrations. Each of those features is a potential entry point for water. John Expert Roofer provides commercial roofing repairs, maintenance and replacement for small to mid-size commercial properties, including retail storefronts, offices and mixed-use buildings.
Because most commercial roofs are low slope, our flat roofing expertise is central to this work.
Commercial Roofing Services
We help property owners and managers with:
- Membrane repairs, seam repairs and patching
- Flashing repairs at parapets, curbs and rooftop units
- Drain, scupper and gutter maintenance
- Roof coatings and waterproofing where appropriate
- Scheduled inspections and maintenance plans
- Full roof replacement for systems at the end of their life
Keeping Your Business Running
A roof project should not shut down your operations. We discuss timing, access points and safety around entrances before starting, and we work to keep noise and debris away from customers and tenants where possible.
Preventive Maintenance Pays Attention to Details
Most commercial roof leaks start small: a split seam, a clogged drain, a failed sealant around an HVAC curb. Regular inspections catch these early. Our guide to flat roof maintenance for commercial buildings outlines what to look for between professional visits.
Leaks and Emergencies
If water is coming into your space, call right away. We focus first on stopping the water, then on a lasting fix. Learn more on our roof leak repair page.