The photos show the team putting the final fixings into the cladding.
The roof had to protrude over onto the roof of the building so when it rained, water wouldn't run down the side of the building, but rather enter the guttering system on the top.
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Draughting Project - Fire escape roof

A roof was required to be designed and fitted above a fire escape on the rear of the OBC Building in London.

Andrew Holmes
Product Design Engineer and Design Draughtsman Arborfield, United Kingdom