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Crayford Glazing Testimonials

Customer Name: Brian Denton.

It gives me great pleasure to write this letter to express our gratitude to the engineer who visited our house on 2nd September. My wife said that Mr. Bradley was very helpful, explained what he had done and advised her how to avoid the problems in the future. At a time when no one seems to have any pride in their work, it is a pleasure to be able to write and thank someone who has. Well done Mr. Bradley and thank you for the service.

Example Of Our Glass Services

Toughened Glass
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.

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Crayford Glazing Testimonials

Example Of Our Glass Services

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