Various fixings are used for holding the thatch to the roof.
Metal rods are universally used horizontally to hold the thatch materials in place secured by:
Some thatchers still crook to timbers, the drawback to crooks are that there is potential to split rafters and the result is stress placed on the roof structure. The “banging,” also causes damage to ceilings in some cases. They are not recommended for a system with solid fireboards.
Screws & Wires
Thatchers have moved on to using stainless steel screws and wires with the metal rod. The screw fixes into the battens causing less stress to timbers than crooks.
Spars are used when the roof is stripped to a firm foundation. Both plastic and wood spars are used as fixings for coatwork.
Click here to see a video of a sparmaker making thatching spars.
Bamboo and other woods e.g. Ash are sometimes used as horizontal liggers. Spars are produced straight but often now imported ready twisted. Twisting a spar is a technique mastered by thatchers usually when in training and is not as easy as it looks. The spar must be twisted not broken! Spar making used to be done by thatchers but this trade is now more specialised e.g. coppicing groups.
Pin wire bent into a U shape or spars is used to fix wire netting down, it is also stapled to the arris rail or fascia under the eave.