Limekiln at Green Cwm is a Grade II listed building in the Swansea local planning authority area, Wales. First listed on 19 July 2000. Limekiln.
Limekiln at Green Cwm
- WRENN ID
- small-solder-marsh
- Grade
- II
- Local Planning Authority
- Swansea
- Constituency
- Gower MP: Tonia Antoniazzi (Lab)
- Country
- Wales
- Date first listed
- 19 July 2000
- Type
- Limekiln
- Address
- Limekiln at Green Cwm, Ilston
- OS grid reference
- SS 537 898
- Coordinates
- 51.58864, -4.11195
- Source
- Cadw listing
Description
The Limekiln at Green Cwm is a large structure, standing 6 meters high and built in a bow shape from the nearby limestone scarp. There are indications of associated quarrying at the rear of the kiln. To the right, there is a single working recess, and on the left, a ramp leads from ground level to the top of the kiln. The right side of the kiln has been restored with a sloping shape that may not be historically accurate.
Constructed from local rubble limestone, the kiln features a lining made of firebrick. The working recess has straight sides but is corbelled over the draw hole, incorporating several cast iron beams. The roof of the recess is a well-formed segmental arch with a span of approximately 3 meters. The draw hole is neatly framed with bevelled bricks, an iron lintel, and one remaining firebar.
At the top of the kiln lining, there is a small raised wall equipped with a safety grille. The fire-brickwork is one brick thick and shows signs of lime encrustation. The internal diameter at the top measures about 2.5 meters, narrowing to about 1 meter at the draw level.
Local climate
Limekiln at Green Cwm sits in one of the wettest parts of the UK, with an average of 1,490 mm of rain a year. This makes it wetter than 98% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 99% of listed buildings.
It experiences an average of 7 freeze-thaw cycles a year, fewer than 95% of listed buildings. Of these, 2 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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