Chimney of former Ynysgedwen Iron Works is a Grade II listed building in the Powys local planning authority area, Wales. First listed on 26 March 1992. Industrial chimney.
Chimney of former Ynysgedwen Iron Works
- WRENN ID
- hallowed-keystone-finch
- Grade
- II
- Local Planning Authority
- Powys
- Constituency
- Brecon, Radnor and Cwm Tawe MP: David Chadwick (LD)
- Country
- Wales
- Date first listed
- 26 March 1992
- Type
- Industrial chimney
- Address
- Chimney of former Ynysgedwen Iron Works, Ynyscedwyn, Ystradgynlais
- OS grid reference
- SN 783 091
- Coordinates
- 51.76804, -3.76439
- Source
- Cadw listing
Description
The chimney of the former Ynysgedwen Iron Works is a tapering square structure made of yellow brick, standing on a square base that features blank arched openings. The arches are adorned with convex moulding around their edges, and the right arch includes a stone date plaque inscribed with the year 1872. At the top, there is a moulded cornice made of brick, complemented by stone corner stones. The main shaft of the chimney has a raised band just below the raised coping. The total height of the chimney is approximately 70 feet.
Local climate
Chimney of former Ynysgedwen Iron Works sits in one of the wettest parts of the UK, with an average of 1,490 mm of rain a year. This makes it wetter than 98% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 95% of listed buildings.
It experiences an average of 43 freeze-thaw cycles a year, more than 81% of listed buildings. Of these, 21 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.
More on this building
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- No EPC on record for this property
- No sale records on file
- No related consent applications matched
- Detailed attributes — period, style, materials, features
- Flood risk assessment
- Radon risk assessment
- Weather exposure and heating demand — rain and frost month by month and year by year, wind direction, solar and humidity
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