Low. Professional engineering for structural modifications, specialized installation skills for weatherproofing and thermal performance, and compliance with multiple codes make this project ill-suited for typical DIY efforts.
Involves structural modifications, critical energy efficiency considerations for DuPage County's climate zone 5, and precise weatherproofing. Potential electrical work for motorized systems adds complexity.
Project Guidelines & Rules
Administrative and Permitting
4 Rules
Obtain all required building permits from your local building department prior to commencement of work.
IRC R105.1
Submit detailed plans and specifications, including structural calculations (if required) and manufacturer's installation instructions.
IRC R106.1
Ensure all work is performed in accordance with the approved plans and manufacturer's instructions.
IRC R104.1, IRC R612.1
Schedule and pass all required inspections by the local building department.
IRC R109.1
Structural Integrity
5 Rules
Any new or modified foundations for the folding glass wall system must extend to the minimum DuPage County frost depth.
IRC R403.1.4 (42 inches below grade)
Design and sizing of headers for new or enlarged wall openings shall be in accordance with IRC or engineered design.
IRC R502.5.1, R301.1
Wall framing, anchorage, and support systems must be adequately designed to support the dead and live loads of the glass wall system.
IRC R602.6, R602.10, R301.4
The system must meet the wind design loads for DuPage County.
IRC R301.2.1 (Design Wind Speed and Exposure Category for DuPage County)
Seismic design considerations for DuPage County.
IRC R301.2.2 (Seismic Design Category B for DuPage County)
Energy Efficiency and Thermal Performance
4 Rules
Fenestration products (windows and glass doors) shall meet minimum U-factor and Solar Heat Gain Coefficient (SHGC) requirements for Climate Zone 5 (DuPage County).
IRC N1102.1.2, N1103.3
The installed system shall comply with air leakage requirements.
IRC N1102.4.1.2
Fenestration products must bear an NFRC (National Fenestration Rating Council) label or equivalent documentation indicating compliance.
IRC N1103.3.1
Proper installation of flashing and a continuous water-resistive barrier around the opening is critical to prevent moisture intrusion.
IRC R703.8, R703.9
Fenestration and Glazing Safety
3 Rules
Safety glazing (tempered or laminated glass) is required in hazardous locations, including doors and large glass panels near walking surfaces.
IRC R308.4
If the folding glass wall system serves as an emergency escape and rescue opening, it must comply with minimum size and operational requirements.
IRC R310
Guards are required where the bottom of an opening is more than 30 inches above the grade or floor below and less than 24 inches from the finish floor of the opening.
IRC R312
Electrical Systems (for motorized or integrated features)
6 Rules
All wiring methods and materials shall comply with NEC requirements.
2023 NEC, Chapter 3 (Wiring Methods and Materials)
Overcurrent protection for all circuits supplying the system components.
2023 NEC, Article 240
Proper grounding and bonding of all electrical components and metallic parts.
2023 NEC, Article 250
Installation of motors and controllers (if motorized operation) shall conform to specific NEC articles.
2023 NEC, Article 430
Low-voltage control and signaling circuits shall comply with applicable articles.
2023 NEC, Article 725
Any newly installed or modified exterior receptacles associated with the system must have GFCI protection.
2023 NEC 210.8(A)(3)
Site Drainage and Water Management
2 Rules
Site grading must ensure positive drainage of surface water away from the foundation and the base of the folding glass wall system.
IRC R401.3
Management of stormwater runoff from adjacent impervious surfaces to prevent water pooling or intrusion at the wall system.
Illinois Plumbing Code, Chapter 11 (Storm Drainage Systems)
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