Barn at Glanhafan-fawr is a Grade II listed building in the Powys local planning authority area, Wales. First listed on 23 May 2003. Barn.
Barn at Glanhafan-fawr
- WRENN ID
- solitary-render-thistle
- Grade
- II
- Local Planning Authority
- Powys
- Constituency
- Montgomeryshire and Glyndwr MP: Steve Witherden (Lab)
- Country
- Wales
- Date first listed
- 23 May 2003
- Type
- Barn
- Address
- Barn at Glanhafan-fawr, Tanat Valley, Pen-Y-Bont-Fawr
- OS grid reference
- SJ 073 256
- Coordinates
- 52.82082, -3.37682
- Source
- Cadw listing
Description
The barn at Glanhafan-fawr is a stone structure that dates back to an unspecified period. It features a loft that is accessed by external stairs located on the east gable wall. The upper part of the barn is informally boarded at the front, rear, and east gable. Approximately one-third of the roof retains slates on the eastern end, while the remainder is covered with corrugated steel sheeting. The western end of the barn is open and faces a modern shelter building. The north wall is mostly blank, except for a small window and a boarded-up dormer hatch. The south wall includes a large opening and a window to the left, along with two shed doors and two small windows. Inside, there are crucks at the west end.
Local climate
Barn at Glanhafan-fawr 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 84% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 72% of listed buildings.
It experiences an average of 50 freeze-thaw cycles a year, more than 91% of listed buildings. Of these, 30 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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