How do stick curtain wall systems perform in terms of thermal insulation and energy efficiency?

Stick curtain walls can deliver strong thermal performance when specified and installed correctly, but achieving consistent energy efficiency depends on design details and on-site workmanship — especially in extreme climates across the Middle East and Central Asia (including Tajikistan and Kyrgyzstan). Key to thermal performance is the incorporation of continuous thermal breaks in aluminum profiles, proper insulated infills (low-E double or triple glazing), and well-designed perimeter seals to minimize air leakage.

Because stick systems are assembled on-site, thermal break continuity and correct gasket compression across many joints require careful supervision. Improper field installation or missed sealant runs create thermal bridging and air leakage paths that undermine insulating performance. Conversely, when manufacturers supply thermally broken mullions, properly specified spacer systems, and high-performance glazing units, stick façades can reach competitive U-values suitable for energy codes in the UAE or Saudi Arabia.

Enhancing energy efficiency in stick systems also involves specifying warm-edge spacers, argon gas fills, and coated low-E glass tailored to solar conditions typical in Gulf climates. Our company recommends combining detailed shop drawings, on-site training, and third-party thermal modeling to ensure stick-built façades meet expected energy targets. For projects prioritizing repeatable thermal performance and reduced risk of field variability, a unitized approach may still offer an advantage, but with rigorous QA stick systems can equally meet ambitious efficiency goals.