Cruck Barn at Rhosfawr is a Grade II* listed building in the Powys local planning authority area, Wales. First listed on 22 March 1993. House.

Cruck Barn at Rhosfawr

WRENN ID
errant-window-cream
Grade
II*
Local Planning Authority
Powys
Constituency
Montgomeryshire and Glyndwr MP: Steve Witherden (Lab)
Country
Wales
Date first listed
22 March 1993
Type
House
Address
Cruck Barn at Rhosfawr, Cwm Nant Fyllon, Llanfyllin
OS grid reference
SJ 096 216
Coordinates
52.78471, -3.34075
Source
Cadw listing

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

Description

The Cruck Barn at Rhosfawr is a Grade II* listed building, aligned northwest to southeast down the slope of the ground. It features timber framing set on a stone platform that levels the site. The timber framing is clad in corrugated iron, while the front slope of the roof has a corrugated covering, and the rear retains slate tiles.

The barn consists of four bays, with crucks at the gables and a central truss. It has box frame trusses with collar and tie beams at the dais partition and passage partition. There are two tiers of trenched purlins with heavy curved wind braces, although some of these braces are missing. The structure is partially lofted at the lower end. The central bays form a hall, and the large lower bay, which has its own exterior door, was likely used as a chamber rather than a byre, as access to the exterior would have been difficult for animals. Behind the dais partition, there are two small rooms that were probably service rooms. Some interior details are obscured by the cladding.

Local climate

Cruck Barn at Rhosfawr sits in a wetter-than-average part of the UK, with an average of 960 mm of rain a year. This makes it wetter than 75% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 61% of listed buildings.

It experiences an average of 45 freeze-thaw cycles a year, more than 86% of listed buildings. Of these, 25 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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