Barn at Pen-twyn

The barn at Pen-twyn is a timber-framed structure built on high sandstone rubble walls, with the framing covered in weatherboarding. During the inspection in May 1995, the original slate roof had been removed and replaced with felt. The barn has been enlarged uphill with red sandstone rubble to full height. The connection with the earlier cruck building indicates that the barn may have lost a bay at this end, suggesting that the added bay is a rebuild, possibly on a larger scale.

The threshing bay features doors on both sides, with the field side (east) having higher doors that are currently missing. There is a square unglazed window at the north end. At the south end, external steps provide access to a granary situated above the cartshed, which is constructed of rubble with brick dressings.

The remaining early structure consists of five bays, with a central flagged threshing floor. It includes five pairs of crucks that rise directly from the ground, although some have been underpinned with stone and secured to an inserted timber sill. The cruck blades are slightly cranked, approximately 55 centimeters wide at the elbow, and feature four pegs connecting to a trenched tie beam. The collar is morticed in, and the ridge piece is notched into the morticed heads of the blades. The blades are trenched for three tiers of purlins, with the lower tier now mounted on an outrider extending from the collar level to the top of the wall. The northern couple was previously closed, and the collar has been removed. The two southern pairs are rougher than the others, with the southern end couple being weatherboarded and later rubble infilling below the tie. The central truss of the two rebuilt bays at the north end includes a tie beam and queen struts.