Bersham Mill including cast-iron feed pipe

Bersham Mill is a building that features two principal construction phases, characterized by rough rubble with angle quoins on the lower storey, and brick above an ashlar string course, topped with a dentilled eaves cornice and a slate roof. The mill is two storeys high and has a five-window range on the west elevation. This section is primarily from 1828 but includes parts of an earlier foundry building to the south. The west elevation features double doors on the left with steeply arched cambered brick heads. The windows are adorned with decorative cast-iron traceried glazing bars and rusticated stone lintels.

The south gable end largely retains elements from the earlier foundry, including a doorway on the left with a double ring cambered head and an inserted window beside it, which is wider than the earlier single ring cambered head above. The upper window is also an enlargement, with the head and jambs of the earlier opening still visible. The east wall shows evidence of both construction phases, with a straight joint roughly halfway along indicating where they meet. There is a blocked doorway on the left with a four-light window next to it, beneath a cambered relieving arch, and a squared blocked window above.

Inside, the building contains a wheel chamber to the north, and the remainder is a single two-storeyed space with seven bays supported by king-post roof trusses. The mill features a cast-iron and wood wheel with a diameter of 6.41 meters, fed by a cast-iron pipe and penstock tank. The gearing is preserved in the lower storey just south of the wheel chamber, and there are four stone beds located above.