Proven Field Experience
Engineered Commercial Retrofits for Multi-Residential & Commercial Properties
Norstar Windows & Doors specializes in end-to-end building envelope renewal for occupied apartment complexes, condominiums, and commercial towers. Through specialized engineering, proprietary extrusion systems, and disciplined jobsite phasing, we replace outdated fenestration with high-performance, thermally broken aluminum systems that significantly improve occupant comfort, sound attenuation, and long-term energy efficiency.
530 Lolita Gardens
Mississauga, Ontario
5348 Lakeshore Road East
Burlington, Ontario
851 Richmond Road
Ottawa, Ontario
1275 & 1285 Richmond Road
Ottawa, Ontario
290 Bath Road
Kingston, Ontario
27 & 33 Cardigan Street
Guelph, Ontario
235 King Street West
Cambridge, Ontario
380 Waterloo Avenue
Guelph, Ontario
3231 Eglinton Avenue East
Scarborough, Ontario
1964 Main Street West
Milton, Ontario
315 King William Street West
Hamilton, Ontario
33 Fennel Avenue West
Hamilton, Ontario
620 Concession Street
Hamilton, Ontario
9 Bonheur Court
Brantford, Ontario
45 Pond Mills Road
London, Ontario
415 Locust Street
Burlington, Ontario
575 - 605 Proudfoot Lane
London, Ontario
701 Geneva Street
St. Catharines, Ontario Engineering Precision & Reliability
Why Developers and Property Managers Partner With Norstar
Retrofitting fenestration in existing high-rise structures demands stringent engineering compliance, careful moisture management at existing interfaces, and precision logistics to protect property operations.
Suite-by-Suite Phasing
Our installation teams coordinate rigorous schedules that allow same-day opening sealing, keeping suites weather-tight and occupied without tenant relocation.
Custom Extrusion Matching
In-house manufacturing allows us to design custom trim, subsills, and panning extrusions that fit legacy masonry or concrete openings precisely.
Thermal & Acoustic Upgrades
Thermally broken polyamide bar profiles combined with double or triple insulated glass units achieve superior U-values and noticeable noise reduction.
Single Accountability
From structural field measurements and engineering approvals to final caulking inspections, Norstar handles fabrication and installation with dedicated crews.
Require Technical Specs or Project Estimation?
Connect with our technical estimation engineering team to review site dimensions, thermal target calculations, architectural drawings, or receive our product portfolio catalogue.