'Thrust' thatching is the earliest documented form of thatching and is named after the action required for securing the thatch into place. It requires the roof rafters to be entirely weaved with hazel wands, rather than individual wands tied to the outside of the roof at 14 inch intervals, as is common today. Branches of gorse were then inserted into the weave to create a thick under-thatch. A wooden tool called a 'spurtle' or 'spud' was pushed into the gorse to create an opening into which handfuls of straw was thrust. Thatching roundhouses in this way would most likely be more representative of Iron Age practices.