Glasshouse to north-east of Ruperra Castle is a Grade II listed building in the Caerphilly local planning authority area, Wales. First listed on 16 July 1998. Glasshouse.

Glasshouse to north-east of Ruperra Castle

WRENN ID
little-threshold-poplar
Grade
II
Local Planning Authority
Caerphilly
Constituency
Caerphilly MP: Chris Evans (Lab)
Country
Wales
Date first listed
16 July 1998
Type
Glasshouse
Address
Glasshouse to north-east of Ruperra Castle, Rudry
OS grid reference
ST 220 864
Coordinates
51.57144, -3.12641
Source
Cadw listing

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

Description

The glasshouse located to the north-east of Ruperra Castle is a long structure with a distinctive E-shaped plan, featuring a central entrance that projects forward and wings at either end. Each of the projecting bays is polygonal with deeply splayed corners. The glasshouse is set on a pale brick plinth, with rounded steps leading up to the entrance.

The building is largely complete and retains slate slabbed staging supported by quatrefoil-section cast-iron columns, although no foundry maker's name is visible. Below the staging, there is a diaper pattern of red and cream bricks. The tiled floor includes full-length grilles that cover heating pipes underneath. The roof features cast-iron braces with trefoil cusping. The woodwork for the framework, windows, and doors is reportedly made of teak, and the windows have four-centred heads. At the time of inspection in July 1998, the east end was overgrown.

Local climate

Glasshouse to north-east of Ruperra Castle sits in a wetter-than-average part of the UK, with an average of 1,000 mm of rain a year. This makes it wetter than 80% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 77% of listed buildings.

It experiences an average of 33 freeze-thaw cycles a year, fewer than 56% of listed buildings. Of these, 13 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. Stable and coach-house courtyard ranges to north of Ruperra Castle Grade II 73 m
  2. Former Dairy and Laundry to north of Ruperra Castle Grade II 102 m
  3. Summerhouse to north-east of Ruperra Castle Grade II 102 m
  4. Generating House and attached workshops to north-west of Ruperra Castle Grade II 116 m
  5. Castellated boundary wall to ha-ha to east and south of Ruperra Castle Grade II 132 m
  6. Ruperra Castle Grade II* 142 m
  7. 4 The Row Grade II 931 m
  8. 3 Grade II 937 m
  9. 2 The Row Grade II 944 m
  10. Willow Cottage Grade II 949 m