Limekilns at Clydach Limeworks is a Grade II listed building in the Brecon Beacons National Park local planning authority area, Wales. First listed on 27 July 2000. Kiln.

Limekilns at Clydach Limeworks

WRENN ID
tenth-flagstone-jackdaw
Grade
II
Local Planning Authority
Brecon Beacons National Park
Constituency
Monmouthshire MP: Catherine Fookes (Lab)
Country
Wales
Date first listed
27 July 2000
Type
Kiln
Address
Limekilns at Clydach Limeworks, Llanelly, Monmouthshire
OS grid reference
SO 232 127
Coordinates
51.80781, -3.11457
Source
Cadw listing

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

Description

The Limekilns at Clydach Limeworks are a large rectangular kiln dating from the 19th century, constructed with battered walls made of rock-faced limestone. Some rock-faced copings are still visible. The kiln features paired round-headed drawing arches on the left and right, which are set within shallow straight-headed recesses. The arch-rings are made of yellow brick and consist of three header courses. There are small corner stoking-holes, and a narrow central doorway with a stone lintel leads to a full-height straight flight of narrow stone steps that ascend to the loading stage. Although the crucibles are infilled, the stair remains accessible.

Local climate

Limekilns at Clydach Limeworks sits in a wetter-than-average part of the UK, with an average of 1,040 mm of rain a year. This makes it wetter than 83% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 75% of listed buildings.

It experiences an average of 48 freeze-thaw cycles a year, more than 89% of listed buildings. Of these, 24 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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