Barn at Pant-glas Farm is a Grade II* listed building in the Monmouthshire local planning authority area, Wales. First listed on 28 February 2001. Barn.
Barn at Pant-glas Farm
- WRENN ID
- twisted-obsidian-dawn
- Grade
- II*
- Local Planning Authority
- Monmouthshire
- Constituency
- Monmouthshire MP: Catherine Fookes (Lab)
- Country
- Wales
- Date first listed
- 28 February 2001
- Type
- Barn
- Address
- Barn at Pant-glas Farm, Llanishen, Monmouth, Trellech United
- OS grid reference
- SO 482 041
- Coordinates
- 51.73346, -2.75137
- Source
- Cadw listing
Description
The barn at Pant-glas Farm is a Grade II* listed structure built from random conglomerate rubble, topped with a roof of corrugated metal sheeting, which was previously covered with pantiles. The main (east) elevation features a projecting gabled porch at the south end, which also has sheeting within the gable. The central section is obscured by a modern lean-to, followed by a second pair of cart doors that lack a porch. The remainder of the front is hidden by a gabled cart shed that projects forward. The barn has a steeply pitched roof.
On the south gable, there is an elliptically headed door leading to the cowshed, accompanied by a large slit vent above it. The yard elevation has a modern sheeting lean-to covering the left end. The north doors are boarded, and the stonework suggests that there may have been projecting walls for a porch. The south doors are sliding metal ones, with square framed vents on either side.
Inside, the barn is mostly open, except for a cowshed with a tallet above at the south end, which is likely a 19th-century alteration. There are two threshing floors. The barn features a wide span eight-bay roof supported by massive queen post trusses with side struts. The queen posts support collars that also carry diagonal struts. The roof structure includes three tiers of purlins, secondary rafters, and a ridgepiece, all of which are intact, along with windbraces. The trusses supporting the porch roof have three posts to the collar, with the center post carrying two diagonal struts.
Local climate
Barn at Pant-glas Farm receives an average of 860 mm of rain a year. This makes it wetter than 60% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 62% of listed buildings.
It experiences an average of 40 freeze-thaw cycles a year, more than 77% of listed buildings. Of these, 18 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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