Boiling house and Pigsty at Tre-Ddafydd-uchaf is a Grade II listed building in the Isle of Anglesey local planning authority area, Wales. First listed on 3 September 1998. Boiling house, pigsty.
Boiling house and Pigsty at Tre-Ddafydd-uchaf
- WRENN ID
- patient-window-coral
- Grade
- II
- Local Planning Authority
- Isle of Anglesey
- Constituency
- Ynys Môn MP: Llinos Medi (PC)
- Country
- Wales
- Date first listed
- 3 September 1998
- Type
- Boiling house, pigsty
- Address
- Boiling house and Pigsty at Tre-Ddafydd-uchaf, Bethel, Bodorgan
- OS grid reference
- SH 385 708
- Coordinates
- 53.21018, -4.4187
- Source
- Cadw listing
Description
The building consists of a single-storey boiling house to the west and a pigsty to the east, separated by a high-walled yard. The walls are made of rubble with contrasting limestone dressings, and both structures have gabled roofs covered with modern slate.
The boiling house features a brick chimney on the south gable and a central doorway in the gable end, which has cambered brick heads with a drip course and a rectangular, small-paned overlight above. There is a tall vent slit located above the doorway. Along the base of both long walls, there are blocked feeding chutes with slate lintels. The pigsty has a similarly styled door, although it lacks a fanlight and is offset to the left. The vent above the pigsty door is shorter and offset to the right. The west wall of the pigsty, which faces the yard, has been rebuilt using breeze blocks.
Both buildings are composed of two bays and feature modern collared trusses. Additionally, there is a low stone plinth along the rear gable wall of the pigsty.
Local climate
Boiling house and Pigsty at Tre-Ddafydd-uchaf sits in one of the wettest parts of the UK, with an average of 1,180 mm of rain a year. This makes it wetter than 90% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 96% of listed buildings.
It experiences an average of 11 freeze-thaw cycles a year, fewer than 90% of listed buildings. Of these, 3 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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- Tre-Ddafydd-uchaf also known as Treddafydd-fawr
- Agricultural range at Tre-Ddafydd-uchaf also known as Tre-Ddafydd-fawr
- Stables to NW of Tre-Ddafydd-uchaf also known as Treddafydd-fawr
- Bodorgan Railway Station, goods shed
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- Treddafydd Isaf
- Tyn Rhos Uchaf
- Cefn-Trefeiler
- Stables to West of Trefeilir
- Church of St. Cadwaladr, Meyrick memorial