A programme of historic building recording was carried out by Colchester Archaeological Trust at 11 Trinity Street, Colchester in May-June 2016. The work was restricted to a survey of the roof timbers, exposed during the replacement of the ceiling in one of the first floor rooms (CBC application 160429 relating to the construction of a new ceiling). Visible above the inserted ceiling were the remains of the earlier lath and plaster ceiling, the deterioration of which had caused the later ceiling to sag and bulge. This was constructed from horsehair plaster applied to laths nailed to the rafters and the undersides of collars. These collars were scarfed to the purlins with birdsmouth joints but were formed from machine cut-timbers, which suggests that this earlier lath and plaster ceiling dates to the late 18th or early 19th century. The roof timbers are predominantly re-used oak timbers with common rafters of varying dimensions, i.e. this 16th-century dwelling was constructed from timbers salvaged from another, earlier building.<1>