Express Chelsea glaziers replace glass for a variety of reasons. we provide an emergency response service for broken glass repairs where we would board the windows for your security and then replace the glass usually within 48 hours in and around the Chelsea area.
Glass in Chelsea commercial properties that should be but doesnt meet safety requirements can be replaced with safety glass. All enquiries are welcome with free estimates and quotes by phoning our Chelsea team.
Glass for use in Chelsea domestic properties typically comes in two varieties; single or double-glazed, with a choice of either float/annealed or toughened glass. Single-glazed windows with float glass can normally be fitted on the same day. Our Chelsea glaziers are able to replace glass from either the outside or the inside of properties, if the framework allows it. If required, we can source scaffolding and/or lifting vehicles for high glass installations.
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There are two types of Toughened glass; heat-treated and chemically treated. There are then two further types of heat-treated glass; heat-strengthened, and fully-tempered. Fully-tempered heats the glass to above its annealing point, and then rapidly cools the glass. This makes it approximately four to six times tougher than standard float glass, enabling it to qualify as a safety glass that conforms to BS 6206 Class A.
Heat-strengthened follows a similar process, but is only twice as tough, and does not qualify as a safety glass. Chemical toughening involves running the glass through a bath of molten potassium nitrate, which exchanges the smaller sodium ions in the glass, with the bigger potassium ions in the molten bath.
The advantages of this are two-fold; the glass is tougher than when heat treated, and this approach can be applied to glass of complex shapes and sizes, making it suitable not just for glass sheets, but also for glass ornaments, and glass of unusual sizes.