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Threshing Barn at Tre-castell Farm

A Grade II Listed Building in Dyserth, Denbighshire

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Latitude: 53.3031 / 53°18'11"N

Longitude: -3.4015 / 3°24'5"W

OS Eastings: 306699

OS Northings: 379373

OS Grid: SJ066793

Mapcode National: GBR 4ZP7.CN

Mapcode Global: WH76G.Q7FM

Entry Name: Threshing Barn at Tre-castell Farm

Listing Date: 15 July 1998

Last Amended: 12 March 2003

Grade: II

Source: Cadw

Source ID: 25960

Building Class: Agriculture and Subsistence

Location: Tre-castell farmyard, 100 m south of Newmarket Road and about 500 m east of Dyserth Village.

County: Denbighshire

Community: Dyserth

Community: Dyserth

Locality: Tre-castell

Traditional County: Flintshire

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A late C19 barn for mechanical threshing, with granaries attached which have been converted to domestic occupation. The threshing machinery is thought to have been powered by a rope system from a former mill on the Afon Ffyddion about 150m to the SE.


A large shed open at the E side except for 4 tall cast-iron columns. Stone walls of local limestone masonry, uncoursed; slated roof. The main roof consists of 4 bays plus hipped end bays; the N end bay is storeyed and separated by a stone cross-wall, the space beneath the 4 common bays and the S end bay is unencumbered.

The N end-elevation is symmetrical with 2 storeys and 2 windows. Aligned doors centrally above and below, the upper door semi-glazed and serving as a window, the lower door with an overlight. Four-pane sash windows above and below. The S end-elevation is plain but with slits for ventilation or for the power drive.

At the W side is a lower range of buildings converted to domestic use, with a slate roof continuing the slope of the barn roof but with one large gable and 3 small gables (plus one in the north flank). Three doors and 5 windows below, one window to each gable above; all the windows of sash type with 4 panes.


The trusses are of superior design in mixed timber and wrought iron, with a timber collar beam and struts, an iron king tie and iron ties to the feet of the rafters.

Reasons for Listing

Listed as an unusual survival of the era of on-farm mechanical threshing, with fine late C19 roof trusses of technically advanced type.

Other nearby listed buildings

  • II Tre-castell Farmhouse
    100 m south of Newmarket Road (A5151), about 500 m east of Dyserth Village. On rising ground facing N; farmyard reached by trackway from main road.
  • II Viaduct over Dyserth and Cwm Railway
    Over Prestatyn-Dyserth walkway, formerly the Dyserth and Cwm branch railway, about 200 m north-west of Anglia Buildings offices
  • II Limekiln 2 off Upper Foel Road
    Second limekiln from the north in a group of five surviving at the east side of Upper Foel road (200 m north of Sunningdale).
  • II Limekiln 4 off Upper Foel Road
    Fourth limekiln from the north in a group of five surviving at the east side of the Upper Foel road (100 m north of Sunningdale).
  • II Craig-y-castell
    To south side of Allt-y-graig, 1/2 km east of Ffordd Talargoch, in a large garden. In the grounds are earthworks of Dyserth Castle and minor masonry traces.
  • II* Tomb group in St Bridget's Churchyard
    About 10 m south-east of the chancel of Dyserth Church.
  • II Telephone Call-box at Entrance to Car Park for Waterfall
    Set back from the road beyond the Afon Ffyddion stream, at the entrance to the car park for the waterfall opposite Bethel Chapel.
  • II* Church of St Bridget
    At the centre of the village of Dyserth, within a large churchyard. Stone churchyard wall with triangular coping; steel gates to west, north and south.

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