What is the difference between storefront and curtain wall systems?

Both storefront and curtain wall systems create striking glass exteriors for commercial buildings, but they are designed for different types of projects. Storefront systems are typically used in low-rise applications such as ground-level retail entrances or office fronts. Curtain wall systems are intended for larger, multi-story structures that require higher levels of strength, performance, and weather management.

Storefront systems are usually limited to heights of about 10 feet. Because they drain water only through the bottom sill, greater height can lead to water infiltration or increased wind-load stress during severe weather. They work best on the first or second floor and in areas where the building provides some protection from weather. Storefront systems are also more economical, which makes them a practical choice for commercial entrances and lower-level glazing.

Curtain wall systems offer greater performance and flexibility. They can span several floors and are engineered to withstand significant wind loads, which makes them suitable for tall buildings or large openings. Each individual light of glass drains water separately, allowing the system to handle heavy moisture without being overwhelmed. With deeper frame profiles and a variety of infill options such as glass, metal panels, or stone, curtain walls support both structural needs and modern architectural designs.

Key Differences at a Glance

• Storefront: Best for low-rise installations, drains water at the sill, generally limited to 10 to 12 feet in height.
• Curtain Wall: Designed for multi-story buildings, each lite drains independently, built to meet higher structural and weather-resistance requirements.

Choosing between a storefront system and a curtain wall depends on the height of the building, the level of structural support required, water-management needs, and your overall design goals. Both systems provide visibility, natural light, and exterior appeal, but only when used in the applications they are best suited for.

If you are planning a commercial project and want to determine which system is right for your building, explore our Commercial Aluminum Projects to learn more about the solutions Reflections Glass and Mirror offers in central Iowa.