Cast House and Foundry is a Grade I listed building in the Torfaen local planning authority area, Wales. First listed on 9 February 1995. Foundry.
Cast House and Foundry
- WRENN ID
- fading-pilaster-birch
- Grade
- I
- Local Planning Authority
- Torfaen
- Constituency
- Torfaen MP: Nick Thomas-Symonds (Lab)
- Country
- Wales
- Date first listed
- 9 February 1995
- Type
- Foundry
- Address
- Cast House and Foundry, Blaenafon Ironworks, Blaenavon
- OS grid reference
- SO 249 092
- Coordinates
- 51.777, -3.08945
- Source
- Cadw listing
Description
The Cast House and Foundry is a pair of single-storey, rectangular buildings dating from the 19th century. Their gable end facades are constructed of stone rubble masonry, with some areas patched in brick. Ashlar dressings highlight the quoins and ground floor openings, while a stone band course adds a pediment treatment. The upper level openings feature brick dressings. Remnants of additional cast houses can be found on either side.
The Cast House features a main facade with three semi-circular arched ground floor openings that spring from square piers. Above, there are three upper openings: the larger central one has a semi-circular arch, while the outer two are ocular windows. The roof is pitched and covered with slate. At the east corner of the building, there is the base of a cupola furnace.
The Foundry's main facade at ground level has three openings, with signs of other blocked openings. The larger central opening is an elliptical arch, flanked by a semi-circular arched opening to the south and a rectangular opening to the north. The roof of this building is missing, and a cupola furnace and enclosure are located at the east corner.
Local climate
Cast House and Foundry sits in a wetter-than-average part of the UK, with an average of 1,040 mm of rain a year. This makes it wetter than 83% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 75% of listed buildings.
It experiences an average of 48 freeze-thaw cycles a year, more than 89% of listed buildings. Of these, 24 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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