Glansirhowy Farm is a Grade II listed building in the Torfaen local planning authority area, Wales. First listed on 4 March 1952. House.

Glansirhowy Farm

WRENN ID
iron-forge-snow
Grade
II
Local Planning Authority
Torfaen
Constituency
Torfaen MP: Nick Thomas-Symonds (Lab)
Country
Wales
Date first listed
4 March 1952
Type
House
Address
Glansirhowy Farm, Llanfrechfa, Cwmbran, Ponthir
OS grid reference
ST 319 942
Coordinates
51.64308, -2.98411
Source
Cadw listing

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

Description

Glansirhowy Farm is a house constructed from painted rubble stone and brick, topped with slate roofs. It is two storeys high and has a T-shaped layout. A large stone chimney is located at the end of the main section, while a renewed brick chimney is found on the gable of the cross-wing to the left. The gable of the cross-wing has been significantly altered with brick for 19th-century chimney flues and features a 20th-century window in a longer opening. The left side of the cross-wing has brick-framed windows, including a square window above a ground floor door, flanked by triple casements, all with cambered arched heads. The left end gable of the cross-wing has a corbelled chimney breast, although the stack has been removed.

The main range to the right of the cross-wing has two 20th-century windows under the eaves; the left window is long and may have replaced a mullioned window, while the centre window is square. The ground floor is enclosed within an added outbuilding that features a 20th-century door set in a chamfered 16th-century oak frame, alongside a notable 6-light oak mullion window with three sets of three lights, diamond mullions, and a heavy centre mullion set in a double-chamfered frame. There is also a 20th-century single-storey range attached to the gable end.

While the interior is not accessible, it is reported to have a section of reused stud and panel partition in the main range. The central beams feature chamfered designs with keeled hollow stops in one house, and all beams in the other. The layout suggests there is a fireplace at the right end of the main range, with a spiral staircase to the right and a cupboard to the left.

Local climate

Glansirhowy Farm receives an average of 930 mm of rain a year. This makes it wetter than 71% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 72% of listed buildings.

It experiences an average of 35 freeze-thaw cycles a year, more than 55% of listed buildings. Of these, 14 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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  • 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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  5. Waun-y-pwll Grade II 1.1 km
  6. Little Creiggydd Grade II 1.2 km
  7. Cwm Aaron and attached barn Grade II 1.5 km
  8. The Monks Cell at Llantarnam Abbey Grade II 1.5 km
  9. Ruins of barn at Llantarnam Abbey Grade II 1.5 km
  10. The Cottage and attached walls of walled garden at Llantarnam Abbey Grade II 1.5 km