Secondary Glazing for Heat & Energy Insulation - A Case Study
The Whitechapel Bell Foundry - London E1
Originally operating from buildings destroyed in The Great Fire of London (1666) the present premises were built in 1670 and are Grade 2 Listed.
The Whitechapel Bell Foundry has the distinction of being the longest running manufacturer in Great Britain (Guinness Book of Records) established in 1570 during the reign of the Queen Elizabeth I and trading continuously for over 400 years up to the present day, during the reign of Queen Elizabeth II.
Famous Whitechapel bells include Big Ben and the famous American symbol of independence, the Liberty Bell. The Company has been exporting since 1747, when a set of bells was sent to St. Petersburg, Russia.
Because of the premises listed building status, replacing the sash windows was not a practical option and indeed they were still in good, serviceable condition.
However, a modern standard of heat insulation for the windows had become essential for both the comfort of employees and to combat ever increasing energy costs.
During 2008, the contract for secondary glazing the East London buildings’ vertically sliding sash windows was awarded.
This was achieved using the Legacy ® secondary glazing heritage range of Counter-Balanced Vertical Sliding Windows fitted with Tilt-In facility which allow easy cleaning of the reverse side of the glazing and are approved for secondary glazing grade 2 listed.
The Tilt-In facility is a unique feature essential for most London sash windows because of the lack of reveal depth to facilitate cleaning between the inner and outer panes of glass.
The Foundry’s sash windows are a mix of white painted finish and light oak finish. Our stock white and stock brown frame finishes provided a good match in both cases.
Windows fronting onto the busy Whitechapel Road at ground floor level have sandblasted glass vanity screens fitted between the sash windows and the secondary glazing.
As an added bonus, although this work was carried out primarily for heat insulation to create energy efficient windows, there has been a noticeable decrease in noise from outside.
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