Next Generation Systems

Sustainable Solutions for building maintenance & repair


Next Generation Systems offers engineered products for architectural repair together with innovative services to fully service your projects.

With over 30 years experience in wood repair, historic window surveys, cost estimates, and project management NextGenSys will be there from start to finish.

About NGS Founder: John Stahl

John began working in historic preservation while attending the University of Utah working on a Fine Arts Degree.

In 1982, John moved to New York City to pursue a career in performing arts. As a side job John started a building restoration company and began restoring historic properties in and around New York City.  John was an approved contractor with the New York City Landmark Conservancy specializing in wood window restoration and repair.

Beginning in 1995, John began a long association with This Old House Television Show appearing on several episodes demonstrating wood repair, window restoration, and paint preparation techniques. Recently, John has presented on business topics for painting contractors at the National PDCA convention  and has published articles in various trade publications:

This Old House: Repairing Rotted Trim

This Old House Saving Windows

This Old House Watertown Project

This Old House TV Project

This Old House Milton House Project

This Old House Salem MA Project 1995

This Old House Salem MA Project 1995

John has invented several specialty products for building restoration and repair. In 1996  John retired from full time contracting and began Advanced Repair Technology, Inc. a company specializing in products and training for building restoration, window restoration, and maintenance. John developed the first flexible epoxy wood repair system: Flex-Tec HV and Prim-A-Trate for Advanced Repair Technology, Inc

In 1999, John was awarded a US Patent for a unique weather-stripping system for existing windows.


In 2009, John sold his interest in ART and began The Business Coach of New York, a business coaching firm dedicated to helping A/E/C professionals to increase leads and market share.

In 2016, John went back to the lab and re-formulated his original flexible epoxy to take advantage of newer polymer technology and launched Next Generation Systems and DURA-FIX Slow Cure.

John resides in Albany, New York and travels throughout the Northeast working with A/E/C firms and building owners/managers internally on their businesses, externally on their projects.                 

      John Stahl founder Nxtgensys

      John Stahl founder Nxtgensys

888-370-5420           7 Marian Ct. Altamont, NY