Alter Phase Roofing Contracting protects homes and businesses across all five NYC boroughs. Expert craftsmanship, transparent pricing, 24/7 emergency response.
From minor repairs to full commercial installations, our licensed team handles every roofing need with precision and premium materials.
Fast, reliable fixes for leaks, storm damage, missing shingles, and flashing failures. We diagnose and fix the root cause — not just the symptom.
Learn More →When repairs aren't enough, we deliver seamless full replacements using premium shingles and roofing systems built to outlast NYC weather.
Learn More →Building new? We coordinate with your team to deliver a properly installed, fully weatherproofed roof on schedule and on budget.
Learn More →TPO, EPDM, and PVC systems with proper drainage design. Expert flat roof service for modern homes and commercial buildings alike.
Learn More →Large-scale installations, maintenance, and restoration for businesses of all sizes. Minimal disruption, maximum longevity.
Learn More →24/7 storm response including tarping, full damage assessments, and insurance claim assistance to protect your property immediately.
Learn More →No confusing jargon or hidden fees. We explain your needs in plain language and provide real options that fit your budget.
Unlike contractors who rely on drones, our team physically climbs every roof to find every issue — the right way.
We show up when we say — fully equipped, ready to work. We respect your time as much as the quality of the final result.
Every project backed by warranties on both materials and workmanship — giving you long-term confidence in your roof's performance.
We help navigate the entire insurance claims process — from detailed damage documentation to working with your insurer directly.
Locally owned on Staten Island — we know NYC's weather challenges firsthand. We're the roofers your neighbors recommend.
Mark and his team did an excellent job replacing my roof. He climbed up to investigate, unlike other contractors using drones. Honest opinion, great communication, and fair pricing. Will definitely contact again.
The team from Alter Phase did a superb job. They walked my roof and identified all trouble spots. Price and timeline were clearly communicated. Demolition to clean-up — all handled with professionalism.
Professional, very responsive, and took the time to educate us on what the project entailed. Really happy with the outcome. Worth every penny. 100% will recommend to family and friends.
As Staten Island's premier roofing contractor, Alter Phase has deep roots in the local community. We know the specific challenges, building codes, and styles of every NYC neighborhood.