Felin Mydroilyn is a Grade II listed building in the Ceredigion local planning authority area, Wales. First listed on 16 February 1996. Mill.
Felin Mydroilyn
- WRENN ID
- pale-forge-snow
- Grade
- II
- Local Planning Authority
- Ceredigion
- Constituency
- Ceredigion Preseli MP: Ben Lake (PC)
- Country
- Wales
- Date first listed
- 16 February 1996
- Type
- Mill
- Address
- Felin Mydroilyn, Llanarth
- OS grid reference
- SN 457 552
- Coordinates
- 52.17361, -4.25654
- Source
- Cadw listing
Description
Felin Mydroilyn is a building constructed from rubble stone with a slate roof, featuring one storey and a loft. The north gable end has a broad, cambered-arched cart entry at ground level, which is framed by stone voussoirs and has double plank doors. To the right, there is a lean-to addition that includes a ground floor door with stone voussoirs and a damaged opening above it. The east side provides access to the upper floor from a raised bank, featuring a door and a window.
At the south end, there is a large iron mill-wheel with timber spokes and buckets, which has been enclosed in a stone building that matches the roof height of the original structure. This enclosure has a tall arched opening on the west side, also framed by stone voussoirs. The building has not been inspected recently but is said to contain remaining mill machinery and a single loft floor.
Local climate
Felin Mydroilyn sits in one of the wettest parts of the UK, with an average of 1,240 mm of rain a year. This makes it wetter than 92% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 93% of listed buildings.
It experiences an average of 21 freeze-thaw cycles a year, fewer than 78% of listed buildings. Of these, 9 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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