Do I need a structural engineer for a roof terrace?

Do I need a structural engineer for a roof terrace?

Lisa Andrews (Horticulturalist) gives expert video advice on: Do I need an architect to design a roof terrace?; Do I need a structural engineer for a roof terrace?; Should I hire a specialist roof terrace constructor? and more...

A structural engineer is necessary for roof terraces if you're unsure on the loading of the roof, especially within an old building. The engineer will provide calculations for steel or timber joists.