A Hammerbeam roof is a decorative, open timber roof truss typical of English Gothic architecture and has been called " The most spectacular endeavour of the British Medieval carpenter." They are traditionally timber framed, using short beams projecting from the wall on which the rafters land, essentially a tie beam which has the middle cut out. These short beams are called hammer-beams and give this truss its name. A hammerbeam roof can have a single, double or false hammerbeam truss.