Hayes Farm Windmill is a Grade II listed building in the Vale of Glamorgan local planning authority area, Wales. First listed on 16 April 1996. Windmill.
Hayes Farm Windmill
- WRENN ID
- broken-entrance-yew
- Grade
- II
- Local Planning Authority
- Vale of Glamorgan
- Constituency
- Cardiff South and Penarth MP: Stephen Doughty (Lab)
- Country
- Wales
- Date first listed
- 16 April 1996
- Type
- Windmill
- Address
- Hayes Farm Windmill, Sully
- OS grid reference
- ST 141 678
- Coordinates
- 51.40354, -3.23629
- Source
- Cadw listing
Description
Hayes Farm Windmill is a stone tower mill that includes an attached granary and barn. The windmill tower is constructed from coursed rubble limestone, with some areas covered in render, and it is missing its cap. At two-thirds of the way up the tower, there are iron joists from a former gantry, along with a blocked access on the north side. The west side features two windows, one above the other, while the east side has one window and a doorway. On the south side, there is a door that opens at first floor level into the granary.
The granary and barn create a long rectangular range that is now roofless, built from rubble stone with red brick dressings and mostly featuring cambered-arched openings. There are tall round-headed threshing arches facing each other towards the center. The building originally had two floors, with the granary located to the west and the barn to the east. Lower extensions are present at each end, with cartsheds positioned at right angles. Remnants of other buildings can be found to the south and west, including a single-storey range to the west. The farmhouse is located on the opposite side of Hayes Road.
Inside the tower, the hurst frame still holds two pairs of stones and stone nuts. The drive post remains intact, complete with a wallower and spur wheel, and another drive passes through the wall.
Local climate
Hayes Farm Windmill sits in a wetter-than-average part of the UK, with an average of 1,090 mm of rain a year. This makes it wetter than 87% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 92% of listed buildings.
It experiences an average of 17 freeze-thaw cycles a year, fewer than 83% of listed buildings. Of these, 6 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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