How should material selection vary for curtain wall systems installed in desert versus cold-climate regions?

Material selection for metal curtain wall systems must reflect the specific environmental stresses of desert and cold-climate regions. In desert climates prevalent across the Gulf, materials face intense solar radiation, thermal cycling and abrasive sand. Choose high-performance PVDF coatings or anodizing to protect aluminum extrusions against UV degradation and color fade; specify seals and gaskets with superior UV resistance and high movement capability. Hard-coat and anti-abrasion surface treatments reduce sand-induced abrasion. For coastal deserts, enhanced corrosion resistance for fasteners and anchors (stainless steel) is critical. Conversely, cold-climate regions in Central Asia require attention to freeze-thaw cycles, snow loads and thermal contraction. Specify insulated glazing with warm-edge spacers, robust drainage and vapor-control layers to prevent condensation and frost-related glazing stress. Thermal breaks with proven low-conductivity materials prevent thermal bridging and reduce condensation risk on interior surfaces. In both climates select glazing U-values and SHGC to balance heating and cooling demands local to the site. The choice of insulation in spandrels—mineral wool for non-combustibility or PIR for space efficiency—should reflect fire code and thermal needs. Tailoring materials to the actual exposure conditions of Dubai, Riyadh, Almaty or Tashkent ensures reliable curtain wall performance over decades.