Former Calcining Furnaces at Gadly's Ironworks is a Grade II listed building in the Rhondda Cynon Taf local planning authority area, Wales. First listed on 10 January 1991. Industrial.

Former Calcining Furnaces at Gadly's Ironworks

WRENN ID
ghost-finial-weasel
Grade
II
Local Planning Authority
Rhondda Cynon Taf
Constituency
Merthyr Tydfil and Aberdare MP: Gerald Jones (Lab)
Country
Wales
Date first listed
10 January 1991
Type
Industrial
Address
Former Calcining Furnaces at Gadly's Ironworks, Aberdare East, Rhondda Cynon Taff
OS grid reference
SN 999 029
Coordinates
51.71648, -3.44935
Source
Cadw listing

Also on this page: flood risk · radon risk · weather exposure · detailed attributes ↓

Description

The former calcining furnaces at Gadly's Ironworks are constructed from snecked rubble with stock brick dressings. The two main elevations are battered. The high southwest side features three visible apertures, while a fourth is hidden behind the garage of a neighboring property. There is a single opening at the lower southeast end. All of these openings are semi-circular; the one at the southeast end has been infilled, and the openings on the southwest side have been blocked behind the arch. The structure is overgrown at the top but previously had oval apertures where ore was placed for purifying.

Local climate

Former Calcining Furnaces at Gadly's Ironworks sits in one of the wettest parts of the UK, with an average of 1,210 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 87% of listed buildings.

It experiences an average of 44 freeze-thaw cycles a year, more than 85% of listed buildings. Of these, 22 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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Nearby listed buildings

  1. Cynon Valley main Store Building (formerly the Casting House at Gadly's Ironworks Grade II 72 m
  2. Stone Revetments at Former Gadly's Ironworks Grade II 83 m
  3. Blast Engine House at former Gadly's Ironworks Grade II 87 m
  4. Gadlys Higher Standard School (Original Ranges only) Grade II 140 m
  5. Gadlys Chapel Grade II 252 m
  6. St John the Baptist Parish Church Grade II* 300 m
  7. Gates & Gate Piers, including Flanking Railings at SE (Main) Entrance to Aberdare Park Grade II 308 m
  8. 42 High Street Grade II 321 m
  9. 43 High Street Grade II 329 m
  10. Aberdare Carpet Company Grade II 339 m