Cwm Pelenna ventilation stack is a Grade II listed building in the Neath Port Talbot local planning authority area, Wales. First listed on 6 March 2000. Ventilation stack.
Cwm Pelenna ventilation stack
- WRENN ID
- rough-flint-amber
- Grade
- II
- Local Planning Authority
- Neath Port Talbot
- Constituency
- Aberafan Maesteg MP: Stephen Kinnock (Lab)
- Country
- Wales
- Date first listed
- 6 March 2000
- Type
- Ventilation stack
- Address
- Cwm Pelenna ventilation stack, Cwm Blaenpelenna
- OS grid reference
- SS 816 972
- Coordinates
- 51.66113, -3.71196
- Source
- Cadw listing
Description
Cwm Pelenna ventilation stack is a truncated square structure made of rubble stone, featuring rounded angles and resting on a square base. It stands about 5 meters tall. On the downhill side, which faces west, there is a round arch at the upper end of a stone flue that can be seen in the hillside below.
Local climate
Cwm Pelenna ventilation stack sits in one of the wettest parts of the UK, with an average of 1,340 mm of rain a year. This makes it wetter than 96% 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 33 freeze-thaw cycles a year, fewer than 53% of listed buildings. Of these, 15 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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