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Roof trusses

Coffered truss

A coffered (tray) truss has a bottom chord that slopes up at the sides and runs flat in the middle, creating a raised tray ceiling.

Also known as coffered truss, tray truss, tray ceiling truss, coffer truss, tray/coffer truss

The ceiling rises from the walls in two sloping sections and then levels off, like an upturned tray. The effect is a higher, more generous room without a fully vaulted ceiling, and a natural recess for lighting.

The name varies: coffered truss and tray truss are both common, and some manufacturers group the type with scissor or vaulted trusses.

Related terms
Scissor trussA scissor truss has a sloping bottom chord, so the ceiling underneath can follow the roof and form a vaulted room. Cathedral trussA cathedral truss creates a high, vaulted ceiling, with the bottom chord following the roof slope for all or part of its length. Bottom chordThe bottom chord is the lower member of a truss that ties the two ends together and usually carries the ceiling.
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