Former Llay Hall Colliery Chimney and Flue is a Grade II listed building in the Wrexham local planning authority area, Wales. First listed on 26 September 1994. Coach yard.

Former Llay Hall Colliery Chimney and Flue

WRENN ID
steep-trefoil-yarrow
Grade
II
Local Planning Authority
Wrexham
Constituency
Wrexham MP: Andrew Ranger (Lab)
Country
Wales
Date first listed
26 September 1994
Type
Coach yard
Address
Former Llay Hall Colliery Chimney and Flue, Sydallt, Gwersyllt
OS grid reference
SJ 315 550
Coordinates
53.08826, -3.02396
Source
Cadw listing

Also on this page: flood risk · radon risk · weather exposure · detailed attributes ↓

Description

The former Llay Hall Colliery Chimney and Flue is a square-section structure made of red brick, tapering slightly to a height of approximately 25 to 30 meters. It features corbelled bands around the base and just below the top. The flue extends in a straight line for about 50 meters to the north, starting just below ground level and then constructed on the surface, following the slope downwards. At the edge of the lane, it passes through a stone cross-wall and ends near the former position of the boilers. The flue has vertical side walls made of red brick with a concrete slab on top.

Local climate

Former Llay Hall Colliery Chimney and Flue receives an average of 880 mm of rain a year. This makes it wetter than 64% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 88% of listed buildings.

It experiences an average of 34 freeze-thaw cycles a year, more than 52% of listed buildings. Of these, 18 follow at least 1 mm of rain in the preceding 48 hours. Average temperatures at this location have risen by 0.3°C per decade since 1991.

Averages for 1991–2020; temperature trend 1991–2025. Figures describe the wider area (a grid cell of roughly 10 km), not the individual site. Contains modified Copernicus Climate Change Service information 2026.

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  5. U- shaped Farmyard Ranges at Llay Hall Farm Grade II 1.2 km
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