Tribwthin is a Grade II listed building in the Monmouthshire local planning authority area, Wales. First listed on 30 November 1973. House.

Tribwthin

WRENN ID
salt-oriel-snow
Grade
II
Local Planning Authority
Monmouthshire
Constituency
Monmouthshire MP: Catherine Fookes (Lab)
Country
Wales
Date first listed
30 November 1973
Type
House
Address
Tribwthin, Llantrissent/Llantrisant, Usk, Llantrisant Fawr
OS grid reference
ST 391 969
Coordinates
51.6679, -2.88194
Source
Cadw listing

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

Description

Tribwthin is a house built of rubble stone with a slate roof and two 20th-century brick chimneys, one on the ridge and one at the right end. It is one and a half storeys tall and features a three-window range. The windows throughout are all from the 20th century. The east front has three dormers that break the eaves: one to the left of the ridge stack and two to the right. These dormers replace earlier windows that were located under the eaves at a lower level. On the ground floor, there is a pair of casement windows to the left, a door and a single window to the right, which align with the dormers above, and a small window at the extreme left. All openings have cambered tops with stone voussoirs. The door leads to a former through passage.

The north end is made of rubble stone with a red brick chimney integrated into it. The rear features two large 20th-century dormers, a 20th-century garage door, and an original door below. There is a sloping-roofed stair projection to the right, which has a small two-light timber-mullion window with a diagonal mullion. The corbels of a removed lateral chimney can be found in the adjacent wall.

The left south end gable facing the churchyard contains a 16th-century two-light stone mullioned window with Tudor-arched heads, countersunk spandrels, a renewed mullion, and a hoodmould at the first floor. There is a small blocked single light at the apex.

A parallel rear range, which was the former third cottage situated at a higher level on the bank, is accessed by external stairs. This area has been much altered; the rear east extends beyond the gable of the front range and is made of rubble stone with one brick-framed single light window. The south end has a rebuilt brick stack.

On the ground floor, a garage has been inserted into the northern cottage, with a cross passage leading from the front door and a single room to the south that was the ground floor of the second cottage. Inside, there are heavy beams with stepped stop chamfers and a large fireplace with a chamfered timber lintel. A stone curving staircase is located in the stair tower. The first-floor room at the south end has a collar truss and double purlins, with a second truss in the partition and morticed collar and studs above. The north end features a 19th-century truss.

Local climate

Tribwthin receives an average of 890 mm of rain a year. This makes it wetter than 66% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 66% of listed buildings.

It experiences an average of 41 freeze-thaw cycles a year, more than 78% of listed buildings. Of these, 18 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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