Old Ty'n-y-wern is a Grade II listed building in the Snowdonia National Park local planning authority area, Wales. First listed on 12 January 1989. House.
Old Ty'n-y-wern
- WRENN ID
- proud-rubble-bracken
- Grade
- II
- Local Planning Authority
- Snowdonia National Park
- Constituency
- Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
- Country
- Wales
- Date first listed
- 12 January 1989
- Type
- House
- Address
- Old Ty'n-y-wern, Rhos-Y-Gwaliau, Llangywer, Gwynedd, LL23 7ER
- OS grid reference
- SH 944 350
- Coordinates
- 52.9022, -3.57127
- Source
- Cadw listing
Description
Old Ty'n-y-wern is a building constructed from mortared rough field stone rubble, resting on a boulder and rock plinth, and topped with a slate roof and verges. It is a single-storey structure with a loft and an added outshut. The gable end features a projecting stack, while there is another chimney within the side wall of the outshut, both equipped with drip-stones.
The main elevation has a doorway offset to the left, flanked by small windows, which are modern but fit into earlier openings. An external stone staircase on the right-hand gable wall provides access to the former hayloft, which now has a modern doorway and a small window. There is also a modern doorway in the rear elevation next to the outshut, which has a modern two-light window to its right.
Although not inspected, earlier descriptions noted that the left bay is open to the roof, with a timber partition separating the right-hand bay. Inside, there is a fireplace with segmental voussoirs, and a pegged timber truss spans the through passage, featuring a cambered collar, ridge beam, and lapped purlins.
Local climate
Old Ty'n-y-wern sits in one of the wettest parts of the UK, with an average of 1,190 mm of rain a year. This makes it wetter than 91% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 80% of listed buildings.
It experiences an average of 53 freeze-thaw cycles a year, more than 94% of listed buildings. Of these, 33 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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