Abstract
Surviving saw marks in timber-framed buildings can indicate whether the timbers were trestle-sawn or pit-sawn, although there is no general agreement about when the change from one to the other occurred. Evidence from tree-ring dated buildings shows that the change from trestle-sawing to pit-sawing in Herefordshire took place in and around 1540. This paper discusses the possible reasons for the change and how it may have influenced the size and quality of timber used after the middle of the sixteenth century.