COMMERCIAL ROOFING& RESTORATION
Roofing, envelope restoration, waterproofing and parking structures for commercial, institutional and public buildings across NYC, Westchester and Connecticut — by our own crews, since 1970.

WHAT WE SELF-PERFORM
Self-performed by in-house crews — so quality, schedule, and accountability stay with one team
FEATURED PROJECTS
From NYCHA envelope restoration to structural parking-deck rehabilitation, our case studies document the breadth and complexity of our commercial work.
VIEW ALL PROJECTS
125 Lake Street
The North Tower parking garage at Stepping Stones Apartments had reached a critical state of deterioration. Aging reinforced concrete slabs, corroded steel beam connections, and compromised structural integrity demanded a comprehensive intervention — not a patch job, but a full structural rebuild of the garage and exterior ramp. DeRosa Builders engaged L&M for the complete structural restoration scope: new W12x50 steel columns with epoxy anchor systems, full concrete deck demolition and replacement with a new 6-inch reinforced slab on composite metal deck, waterproofing membrane systems, and a new asphalt driving surface — every phase coordinated with temporary shoring to maintain structural stability during active demolition.

Edenwald Houses
A comprehensive restoration project across 13 residential structures, requiring coordinated work on occupied buildings while maintaining resident safety and comfort. Over 1,000 squares of Siplast Parapro PMMA roofing systems with tapered insulation, complete parapet reconstruction, extensive facade restoration including brick repointing and lintels, metal coping fabrication, railing systems, gutter installation, structural shoring, and concrete repairs.
Commercial roofing and restoration across New York and Connecticut since 1970
EXPLORE PORTFOLIOOWNERS, MANAGERS & PUBLIC AGENCIES
Decades of experience across the building types that depend on a reliable, compliant contractor
Tell us about the building
We respond within 24 hours. If it's an active leak, call — don't fill in a form.
- Phone
- (914) 937-1030
- Office
- 140 Highland Street, Port Chester, NY 10573
- Hours
- Monday–Friday, 7:00am–6:00pm
Trusted Partners
We work exclusively with industry-leading manufacturers to deliver superior results





MBE NYC & NY STATE
Minority Business Enterprise