Windows and doors are essential components of any construction project but they also represent vulnerable points in the building’s external envelope.  Creating an opening in the outer skin of a building requires careful engineering to ensure structural and thermal stability is maintained, which is where lintels come into play. Here, Nick Lander, Sales and Marketing Director at Keystone Group, takes a closer look at the use of lintels in construction.A lintel is essentially a structural support that spans an opening in a wall.  The use of lintels in architecture dates back many centuries – from the highly decorative masonry creations used in ancient Greece, to the timber lintels seen in Tudor times.

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