Outbuilding at Hafod-Tanglwys-Isaf is a Grade II listed building in the Merthyr Tydfil local planning authority area, Wales. First listed on 17 February 2003. Outbuilding. 1 related planning application.
Outbuilding at Hafod-Tanglwys-Isaf
- WRENN ID
- narrow-baluster-starling
- Grade
- II
- Local Planning Authority
- Merthyr Tydfil
- Constituency
- Merthyr Tydfil and Aberdare MP: Gerald Jones (Lab)
- Country
- Wales
- Date first listed
- 17 February 2003
- Type
- Outbuilding
- Address
- Outbuilding at Hafod-Tanglwys-Isaf, Aberfan, Merthyr Vale, CF48 4PS
- OS grid reference
- SO 067 002
- Coordinates
- 51.69302, -3.35068
- Source
- Cadw listing
Description
The outbuilding at Hafod-Tanglwys-Isaf is a lofted stable dating from the 19th century. It is constructed of rubble stone and features a hipped corrugated iron roof that slopes to the right. The original section of the building has three doors that step downhill and five projecting oak beams that were intended to support a missing pentice roof. The wall beneath the eaves displays the oak ends of two roof trusses.
To the left, there is an added section that shares a single roof with the original part. This section includes a full-height door and a window located in a blocked door, which has a timber lintel above it. Additionally, there is a loft door in the left end wall. The right end wall is higher due to the slope of the land and features a door below with two small 19th-century brick loops above.
Inside the older part of the building, there is an inserted wall. The loft floor is supported by four heavy chamfered beams, and there are two heavy oak roof trusses, each with a pegged collar and apex. The roof of the added left end section is supported by modern pine rafters.
Local climate
Outbuilding at Hafod-Tanglwys-Isaf 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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- Full EPC report — heating system, energy costs, size, glazing, construction etc.
- Sale history — 2 transactions since 1998
- Related listed building consents — 1 application
- 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
Matched applications, energy data and sale records are assembled automatically and may contain errors. Flag incorrect data.
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