GNI Management Group Inc. provides building envelope products and services for homeowners and industry professionals in residential, commercial, industrial, and agricultural sectors in Canada. It offers its services in the areas of attic insulation, ice damming, thermal barrier, fiberglass batts, old insulation removal, retrofit drill and fill, magnetite window retrofits, cottage insulation, air leakage testing, spray foam insulation, basement insulation, thermal imaging, exterior insulation, stack effect weatherization, and air sealing performance package services for residential home owners; and blow-in wall system, air barriers, pre-drywall blower door tests, radon protection system, blow-in fiber insulation, BASF high performance wall systems, and under-slab spray foam insulation services for new residential constructions. The company also provides metal roof retrofits, spray foam insulation, magnetite window retrofits, condominium weatherization and window film, stack effect, fire stopping, rooftop ductwork insulation and air sealing, tank insulation, roof-wall junction air sealing, in-plant painting and coating, window films, building diagnostics, old insulation removal, air leakage solution, insulated paneling and cladding, and ICI retrofit services for commercial retrofit customers; and air barriers, sprayed acoustical or thermal insulation, spray foam insulation, specialty coatings, soundproofing, fireproofing, under slab spray foam insulation, blown fiber insulation, and transition membrane services for new commercial constructions. GNI Management Group Inc. was founded in 1980 and is based in Woodstock, Canada.