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ANOTHER DIMENSION OF WINDOWS

LETTERS

I read the April issue of AJ Specification with considerable interest, particularly the section on doors and windows.

Our practice for many years advocated the use of overrebated timber windows set onto sub-sills and secured by cleats behind rebated jambs and lintels. We were happy to demonstrate the many advantages of such construction in the brochure we designed for Burlington some years ago.

Unfortunately, when reproducing details based on that brochure, your draughtsman has illustrated the jamb of the window frame in the wrong plane, overlapping the facing brickwork rather than being set behind it. Failure to think and detail in three dimensions is sadly all too common; it is most unfortunate to find it in such a prestigious publication as yours!

As for the article on timber windows; it appears the UK has still not learned from Europe the merits of windows which open in and have internal glazing beads. Such windows should be fully glazed and finished complete with all ironmongery, and be fitted from inside the building as part of the finishing stages of construction; windows and doors are costly components which should never be built into wet masonry, as is sadly still the norm for most house-builders.Fortunately the requirements of the new Part L will oblige our industry to adopt improved standards of design and construction - but only if we think and detail in 3D!

J M E Potter, by email The slate drawings were as supplied by Burlington. We merely relabelled them - Ed.

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