Former Barn at Garth Isaf is a Grade II listed building in the Snowdonia National Park local planning authority area, Wales. First listed on 1 February 1995. Barn.
Former Barn at Garth Isaf
- WRENN ID
- kindled-oriel-scarlet
- Grade
- II
- Local Planning Authority
- Snowdonia National Park
- Constituency
- Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
- Country
- Wales
- Date first listed
- 1 February 1995
- Type
- Barn
- Address
- Former Barn at Garth Isaf, Arthog, Gwynedd
- OS grid reference
- SH 653 160
- Coordinates
- 52.72535, -3.99494
- Source
- Cadw listing
Description
The former barn at Garth Isaf is a long, six-bay structure built from rubble, dating from the second quarter of the 17th century. Its eastern gable is set into the slope of the hill and features slate roofs, with the two left-hand bays covered in old slates. The eastern gable has a rubble parapet and a former loading bay that has been converted into a window.
On the left side, there is an entrance with a projecting stone lintel and a deeply-recessed boarded door. Above this entrance is a blocked loading bay with a hipped roof. To the left of the door, there is a blocked ventilation slit. On the right side, there are large mid-20th century part-glazed garage doors, along with another entrance on the far right that has a recessed boarded door. At the rear, there is an open dormer loading bay, similar to the front, and a window to the left with a slate lintel, which was once an entrance. The western gable features an upper boarded loading bay.
Inside, the barn retains original pegged collar trusses, although some restorations have been made, and there are two tiers of overlapping purlins. A rubble dividing wall separates bays two and three.
Local climate
Former Barn at Garth Isaf sits in one of the wettest parts of the UK, with an average of 1,390 mm of rain a year. This makes it wetter than 97% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 95% of listed buildings.
It experiences an average of 28 freeze-thaw cycles a year, fewer than 69% 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
Sign in or create a free account to unlock:
- 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
Matched applications, energy data and sale records are assembled automatically and may contain errors. Flag incorrect data.
Similar buildings
The closest matches to this building from all 493,000 UK listed buildings, by architecture, period and materials.
this building 1 similar nearby listed buildings