FAQ Category: Manufacture

A. A sealed unit lifespan is typically 10-20 years, depending on manufacturing quality and installation. At Glasscraft, we ensure a long sealed unit lifespan by using premium materials and rigorous quality control.

A. Sealed unit delivery and installation is carefully managed to prevent damage. At Glasscraft, once manufactured, units are loaded onto ‘A’ frames and transported securely.

A. Using purified water for sealed units ensures that no impurities, limescale, or residues remain on the glass before assembly. This improves adhesion when applying the spacer and sealant.

A. Sealant for sealed glass units is crucial for keeping moisture and gas inside the unit. At Glasscraft, we use high quality sealant for sealed glass units, including Polysulphide and Hotmelt, to ensure durability.

A. During sealed unit gas filling, the two panes of glass are brought together under controlled pressure, and inert gas (such as argon) is injected into the cavity. Sealed unit gas filling helps reduce heat transfer, improving the energy efficiency of the window.

A. A spacer bar for sealed units separates the glass panes, forming the cavity that provides insulation. It also contains desiccant, which absorbs moisture to prevent condensation.

A. Low-e glass for sealed units has a special coating that improves thermal insulation by reflecting heat back into the room. However, before assembly, low-e glass for sealed units must have the coating removed around the edges to allow proper sealing.

A. Toughened glass for sealed units is essential for safety and durability. The glass is heated to around 600°C in a furnace before being rapidly cooled, making it much stronger than standard glass.

A. The manufacture of sealed units involves multiple precise steps to ensure durability and insulation. Large sheets of glass are cut to size, toughened in a high-temperature furnace, and washed using purified water.

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