Double-Height & Eave Window Systems

R3,000

Specify high-performance shading solutions for atria, clerestories, stairwells and eave glazing with confidence in South African conditions.

Why This Module?

Double-height and eave windows are visually powerful, but in South African projects they are also among the most technically demanding openings to shade effectively. This module addresses the real-world pressures architects and specifiers face when working across coastal, highveld and inland climates.

South African climate extremes: manage intense summer solar gain, harsh afternoon glare and overheating in Gauteng, the North West and Limpopo, while preserving winter solar access in cooler regions.
Code-aware specification: align shading decisions with SANS 10400-XA energy efficiency intent, SANS 10400-N glazing considerations, and the wind-loading realities of tall façades under SANS 10160.
Access and maintenance constraints: eave and upper-level glazing often fail at the specification stage because cleaning, servicing and motor access are not resolved early enough.
Architectural performance: improve daylight quality in atria and double-volume spaces without sacrificing visual openness, façade rhythm or occupant comfort.

Pro tip: On north-facing double-height glazing, treat the shade as a solar control device first and a visual screen second. The best-performing solutions are those that are sized to the altitude of the summer sun, not just the opening width.

For South African commercial, hospitality, education and high-end residential projects, correct shading at height can materially reduce cooling loads, glare complaints and post-occupancy retrofit risk. This module focuses on specification decisions that stand up technically, visually and operationally.

Detailed Curriculum

1. Geometry of Double-Height and Eave Openings

Understand how height, orientation, recess depth, roof pitch and façade rhythm influence shade selection, tracking strategy and daylight penetration.

2. South African Climate Response

Apply climate-specific shading logic for coastal humidity, highveld solar intensity, inland temperature swings and wind exposure on elevated façades.

3. Solar Control and Glare Management

Specify systems that reduce direct sun, soften high-angle glare and preserve useful daylight in lobbies, stairwells, atria and upper-level clerestories.

4. Structural and Wind-Load Considerations

Review how opening size, mounting height and exposure category affect bracket design, fixings, motor selection and fabric tensioning under local wind conditions.

5. Motorisation and Controls

Compare manual, wired and integrated control options for high-level windows, including timer logic, sun sensors and BMS compatibility.

6. Material and Finish Selection

Choose durable textiles, coated components and corrosion-resistant hardware suited to coastal salt air, high UV exposure and long service life expectations.

7. Maintenance Access and Lifecycle Planning

Plan for cleaning, repair, replacement and safe access at design stage, avoiding systems that cannot be practically maintained in operation.

8. Specification Detail and Documentation

Translate performance intent into clear drawings, schedules and notes that reduce ambiguity for contractors, façade consultants and quantity surveyors.

Pro tip: In double-volume foyers and stairwells, a shade system that performs well at midday may still fail in late afternoon. Always test the western and north-western sun angles before final sign-off.

Learning Outcomes

Identify the key solar, structural and maintenance risks associated with double-height and eave window systems in South African projects.
Select an appropriate shading approach based on orientation, façade height, climatic exposure and occupancy type.
Explain how SANS 10400-XA, SANS 10400-N and relevant wind-loading considerations influence specification decisions.
Compare motorised and manual control strategies for high-level glazing and justify the most suitable option for the project brief.
Specify materials and finishes suitable for coastal, inland and high-UV environments with reduced corrosion and maintenance risk.
Produce a clearer brief for consultants and contractors that supports accurate pricing, installation and long-term performance.

Who Should Take This Module

This module is designed for South African architects, interior architects, building services specifiers, façade consultants, sustainability consultants and professional teams involved in the early-stage design of buildings with atria, stairwells, clerestories, rooflights and eave glazing.

It is particularly valuable for professionals working on commercial offices, schools, hospitality projects, healthcare environments, luxury residential homes and civic buildings where daylight quality, heat gain and elevated maintenance access must be resolved at concept and design development stage.

If your work involves specifying shading for tall openings, this module will help you move from generic product selection to defensible, site-appropriate detailing.

Prerequisites

None — suitable for all registered professionals.

The content is structured to be accessible for practitioners who are new to specialised shading systems, while still offering enough technical depth for experienced specifiers and design team leads.

CPD Points

1 Structured CPD point

Accreditation is pending with SACAP, SAICE and ECSA. The module is developed to support structured professional development requirements and to strengthen specification competence for built-environment professionals working in the South African market.

Assessment is aligned to practical decision-making, ensuring the learning outcome is directly applicable to design, documentation and procurement processes.