Barn at Llanvair Farm is a Grade II listed building in the Monmouthshire local planning authority area, Wales. First listed on 29 March 2000. Barn.
Barn at Llanvair Farm
- WRENN ID
- veiled-rotunda-sage
- Grade
- II
- Local Planning Authority
- Monmouthshire
- Constituency
- Monmouthshire MP: Catherine Fookes (Lab)
- Country
- Wales
- Date first listed
- 29 March 2000
- Type
- Barn
- Address
- Barn at Llanvair Farm, Llanvair Discoed, Chepstow, Caerwent
- OS grid reference
- ST 447 923
- Coordinates
- 51.62685, -2.79938
- Source
- Cadw listing
Description
The barn at Llanvair Farm is a threshing barn constructed from very roughly coursed limestone rubble, topped with a low-pitched pantile roof. The walls exhibit a slight batter, especially noticeable on the gables and corners. Each gable wall features two slit vents. The north wall includes a central sliding corrugated metal door flanked by slit vents, with a door to the hayloft on the left. The south wall has a central door, a buttress on the left, and an added stable on the right.
This barn has seven bays and a central threshing floor, with evidence of a tallet at the east end. The roof is supported by principal rafters with tie beams that are pegged to the sides of the rafters. The visible scarf joints indicate that some of the materials have been reused. There are two tiers of staggered purlins and a minimal ridgepiece.
Local climate
Barn at Llanvair Farm receives an average of 860 mm of rain a year. This makes it wetter than 62% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 63% of listed buildings.
It experiences an average of 36 freeze-thaw cycles a year, more than 64% 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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