Royalton Mine Engine House at Sx 977617 is a Grade II listed building in the Cornwall local planning authority area, England. First listed on 28 August 1987. A Late C19 Engine house.
Royalton Mine Engine House at Sx 977617
- WRENN ID
- endless-flue-twilight
- Grade
- II
- Local Planning Authority
- Cornwall
- Constituency
- St Austell and Newquay MP: Noah Law (Lab)
- Country
- England
- Date first listed
- 28 August 1987
- Type
- Engine house
- Address
- Royalton Mine Engine House at Sx 977617, Roche
- OS grid reference
- SW 977 618
- Coordinates
- 50.42128, -4.84866
- Source
- Historic England listing
Description
The Royalton Mine engine house, located at SX 977617, is a late 19th-century structure featuring an engine house with an attached chimney. It is constructed of granite rubble and brick and has a rectangular plan. The engine house is designed for an inside beam engine, meaning there is no opening in the bob wall, and all machinery is contained within the building. The structure is roofless, with the gable end wall housing the chimney at one corner, which includes a small window opening at an upper level. The chimney has a circular plan, approximately 4 meters in diameter at the base, and tapers upwards. The lower stage of the chimney is made of granite rubble, while the upper stage and cornice are constructed of brick. The site was not fully accessible during the survey conducted in July 1986.
Local climate
Royalton Mine Engine House at Sx 977617 receives an average of 960 mm of rain a year. This makes it wetter than 74% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 86% of listed buildings.
It experiences an average of 10 freeze-thaw cycles a year, fewer than 91% of listed buildings. Of these, 4 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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