Barn in the farmyard at Glanmachlas is a Grade II listed building in the Snowdonia National Park local planning authority area, Wales. First listed on 26 July 2000. Barn.

Barn in the farmyard at Glanmachlas

WRENN ID
sunken-belfry-peregrine
Grade
II
Local Planning Authority
Snowdonia National Park
Constituency
Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
Country
Wales
Date first listed
26 July 2000
Type
Barn
Address
Barn in the farmyard at Glanmachlas, Llanegryn, Gwynedd
OS grid reference
SH 614 059
Coordinates
52.63383, -4.04913
Source
Cadw listing

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

Description

The barn in the farmyard at Glanmachlas is a Grade II listed structure built of brick, featuring flush stone quoins. Its open sides consist of low brick walls that connect tall brick piers, which have been later infilled with rubble stonework, leaving ventilation slits at two levels on either side of the brick piers. The barn has a slate roof and is arranged in five bays. In the center, there are opposing full-height boarded doors, along with a small door in the left end bay. To the left, the barn continues as a single-storey building with two doors, which were likely originally used as animal pens. At the right end, the barn overlaps the gable end of the southeast range.

Local climate

Barn in the farmyard at Glanmachlas sits in one of the wettest parts of the UK, with an average of 1,360 mm of rain a year. This makes it wetter than 96% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 94% of listed buildings.

It experiences an average of 25 freeze-thaw cycles a year, fewer than 73% of listed buildings. Of these, 10 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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  • 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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Nearby listed buildings

  1. SE range of farm buildings around the large farmyard at Glanmachlas Grade II 27 m
  2. Farm range on the NE side of the farmyard at Glanmachlas Grade II 34 m
  3. Glanmachlas Grade II 76 m
  4. Cemaes Grade II 376 m
  5. Service yard range of buildings at Peniarth Grade II 548 m
  6. The Clock House Grade II 584 m
  7. Peniarth Grade II* 614 m
  8. Brewery/Laundry range at Peniarth Grade II 626 m
  9. Gate piers at the W driveway to Peniarth Grade II 674 m
  10. Gate piers and gate to Peniarth Grade II 871 m