Insulated Glass (IGU)

Construction and design

• Available with one or two cavities; perforated aluminium spacers contain desiccant and the assembly is hermetically sealed.
• The cavity retains dry air or argon, reducing conducted heat and condensation between panes.
• Lower-conductivity spacers may be specified when compatible with sealant, dimensions and system requirements.
• Can combine float, tempered, heat-strengthened, laminated, reflective and Low-E panes with individual bow below 2 mm.
• Glass type, cavity width, weight, wind, sound and cost must be designed together.

Advantages

• The dry-air cavity cuts conducted heat — people near the glass feel comfortable
• Durability against wind pressure and impact can be tuned via glass choice
• Argon can replace dry air for even better thermal insulation
• Any flat glass under 2 mm deflection can be assembled: float, tempered, laminated, reflective, Low-E

Caution in use

• Aluminium spacers conduct heat — consider high-performance spacer systems for demanding thermal specs
• Units are thick and heavy, requiring wider glazing channels and suitable support, and cost more than monolithic glass.
• Finished units cannot be trimmed; verify dimensions before ordering.
• For high-rise use, position laminated outer panes and special coating surfaces according to project requirements.
• Inspect spacer alignment, seals and cavity cleanliness before installation.

Specifications