Custom Flat Roof & Waterproofing Solutions.
ISG is a custom design solution for existing buildings with flat roof design.
About Us
ISG is a collective of in the field industry experts who create custom designed roofing system solutions for building owners.
Tried and tested Roofing and Waterproofing solutions derived from over 100 years of collective practical roofing installation.
Our Services
ISG Vertical Integration— Design Build: In-house end-to-end engineered roofing systems. Design-build.
ISG Proprietary Project Specific Engineered Roofing Systems: proprietary custom roof and waterproofing design for your individual projects.
ISG engineered solutions and who it applies to: for existing buildings and their roofs and waterproofing (which does not include new construction).
