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Former Llay Hall Colliery Washery Building

A Grade II Listed Building in Sydallt, Wrexham

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Latitude: 53.0884 / 53°5'18"N

Longitude: -3.0224 / 3°1'20"W

OS Eastings: 331623

OS Northings: 355062

OS Grid: SJ316550

Mapcode National: GBR 74.9JB7

Mapcode Global: WH88R.JMZR

Plus Code: 9C5R3XQH+92

Entry Name: Former Llay Hall Colliery Washery Building

Listing Date: 26 September 1994

Last Amended: 1 December 1995

Grade: II

Source: Cadw

Source ID: 15828

Building Class: Industrial

Location: Located in the group of former Llay Hall Colliery buildings in use as an industrial estate east of Mold Road. The former washery is a large building converted to industrial workshops at the south-east

County: Wrexham

Community: Gwersyllt

Community: Gwersyllt

Locality: Sydallt

Built-Up Area: Sydallt

Traditional County: Denbighshire

Tagged with: Architectural structure

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Llay Hall Colliery operated from 1877 until 1948. It was sunk by the Llay Hall Coal, Iron and Fireclay Company and worked in association with a fire brick works on the opposite side of the River Alyn. It was nationalised in 1947 but closed shortly afterwards, following a serious underground explosion. The screens and washery building was built around 1920. It formerly contained equipment for sorting and washing coal, but was converted to a regional stores building by the National Coal Board c1948 and subsequently used as a mail-order warehouse and then a light engineering plant. Washery buildings were characteristic of the coal industry in the twentieth century. They were introduced in the 1880s and used at larger collieries from c1900, but did not become universal until after World War II.


The building is of the typical and highly characteristic construction of early washeries, consisting of brick panels supported on a bolted and riveted steel frame exposed to the facade. The framed construction supported vibrating machinery and permitted flexible internal use. There are square-headed metal framed windows, some inserted during conversion. The building is of an irregular form, with rail and conveyor access, and varying numbers of storeys, built into sloping ground. The overall plan is an oblong aligned north-west to south-east. At the north-west end is a two-storey section with a gable facing the front. To the south-east is a four-storey block with two transverse gables, one larger and higher than the other. On the north-east side of this section, the building extends over a former rail line for hopper loading. A rare surviving section of covered conveyor route, with a concrete ramp and steel frame supporting a segmental roof, slopes to ground level at the northern corner of the building. Inside, the building has been divided into workshops, stores and offices.

Reasons for Listing

Listed as a rare washery building, thought to be one of only two pre-war examples of these distinctive and
important colliery structures surviving in Wales. It has group value with other adjacent colliery buildings.

External Links

External links are from the relevant listing authority and, where applicable, Wikidata. Wikidata IDs may be related buildings as well as this specific building. If you want to add or update a link, you will need to do so by editing the Wikidata entry.

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Other nearby listed buildings

  • II Former Llay Hall Collery Engine House
    Located in the group of former Llay Hall colliery buildings in use as an industrial estate east of Mold Road. The engine house is a large building at the middle of the group with a smaller wing attac
  • II Former Llay Hall Colliery Chimney and Flue
    Located in the group of former Llay Hall Colliery buildings in use as an industrial estate east of Mold Road. The chimney is high on the slope to the west of the site, close to Mold Road.
  • II Former Llay Hall Colliery Workshops
    Located in the group of former Llay Hall Colliery buildings inuse as an industrial estate east of Mold Road. The workshops are on the north side of the complex and are in use as stores.
  • II Rock Cottage
    Above the road as it goes downhill towards the River Alyn at Cefn y Bedd.
  • II U- shaped Farmyard Ranges at Llay Hall Farm
    Reached from a farm track running S off the B5102, situated immediately to the W of Llay Hall Farm
  • II Llay Hall Farm
    Situated at the end of a farm track running S off the B5102, partially surrounded by the remains of a moat.
  • II Ffrwd Bridge
    Situated c0.75 km W of Sydallt where the B5102 crosses the River Alyn.
  • II Pavilion at Llay Miners Welfare Institute
    Situated on the N edge of the village immediately beyond the bowling greens at the rear of the Miners Welfare Institute. Playing fields behind.

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