Professional Performance. Proven Experience.

Engineered by industry veterans with decades of field-tested expertise – built for real jobsite performance.

  • Kitchen and Bath

    Durable 100% silicone sealant performance built for kitchens, baths, showers, plumbing, and all high-moisture areas.

    SHOP INTERIOR 
  • Window, Door & Siding

    Engineered for real jobsite conditions — delivering weatherproof protection, UV stability, flexibility, and long-term adhesion on today’s most common building materials.

    SHOP EXTERIOR 
  • Roofing, Flashing & Trim

    Tough, weather-ready performance from the top down. Designed for maximum adhesion, UV resistance, and long-term durability on shingles, flashing, trim, vents, and roof penetrations.

    SHOP ROOFING 

Performance Delivered Direct™

Pallet orders ship shrink-wrapped;
smaller orders ship in protective Legacy Pro master cartons. Your sealants
arrive clean, intact, and jobsite-ready — every time.

How Much Can You Save?

A Note From Our Founders

Legacy Sealants is the continuation of a family story that began in 1966 with OSI – a brand our family helped build into a trusted name among professional contractors.

After years leading companies across the building materials industry, we’ve returned to our roots with a renewed focus on what matters most: delivering performance that stands up to real jobsite conditions.

With Legacy Pro™, our commitment is simple:

Professional-grade products, engineered from real-world experience, delivered direct without the middleman markup.

Whether you’re a contractor, builder, or project manager, Legacy Pro was created to give you reliable performance, trusted quality, and a smarter way to buy.

Thanks for your trust,

– Pete & Mark Longo

Co-Founders,
Legacy Sealants, Inc.

How can we help?