Ty-llwyd is a Grade II listed building in the Blaenau Gwent local planning authority area, Wales. First listed on 26 November 1999. House.

Ty-llwyd

WRENN ID
distant-copper-bracken
Grade
II
Local Planning Authority
Blaenau Gwent
Constituency
Blaenau Gwent and Rhymney MP: Nick Smith (Lab)
Country
Wales
Date first listed
26 November 1999
Type
House
Address
Ty-llwyd, St Illtyd, Llanhilleth
OS grid reference
SO 218 016
Coordinates
51.70831, -3.13298
Source
Cadw listing

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

Description

Ty-llwyd is a house with a byre, dating from the 17th century, constructed of rubble with patches of limewash remaining. The front slope of the byre has a slate roof, while the remainder of the roof has been replaced with metal sheeting. Chimneys have been removed from both gable ends of the house. The building is set into a steep slope, with a large parlour at the upper end and the byre sloping downwards, below a cross-passage.

The long, five-bay, lofted front elevation faces east. The byre to the left has a doorway with a timber lintel. To the right of this is the former cross-passage entry, which has been reduced in width and altered to form a window after a centrally positioned entry was created in the 19th century. The house’s front elevation features wide, inserted doors to the right, with a wide opening above under the eaves. A 19th-century doorway has been inserted centrally. The right bay is slightly narrower in depth, corresponding to the extension of the parlour end, and features a window with a timber lintel and a small window above. The north end is built into the steep bank. The south gable end has a massive, sloping buttress to the left. The rear elevation of the byre includes two window openings with stone dripmoulds, the lower one of which is collapsing. An upper window was originally a door to the cross-passage. To the left is a wide projection for the chimney stair with a catslide roof, lit by a two-light diamond mullioned window. Above this is a blocked window, followed by what appears to have been a door, reduced to form a window; the location of this door against the sloping ground is unusual.

The hall features a 19th-century fireplace with a timber surround and a large chimney stair to the right with stone treads. A 17th-century doorway, of timber with a segmentally arched head, leads to the stair, with a similar upper doorway. A cupboard recess is located to the right of the fireplace. The hall has a beam-and-joist ceiling with straight-cut stops and fillets. The original entry from the cross-passage into the hall survives, featuring a segmentally-headed timber surround and a drawbar slot. A narrow, central room (originally the parlour) is divided from the hall by a post-and-panel partition with a single eastern doorway, and matching outer doorways. Similar beams are present in the parlour. A stone dividing wall, originally the gable end, separates the central room from the large added parlour. The parlour has heavy beams with long, curved stops and an altered fireplace. A recess to the left of the fireplace may be associated with a former stair. The attic room above the hall originally had an eastern dormer, featuring a central truss with curved feet, notched and lapped collar joints, and triple trenched purlins. A similar truss is found in the attic room over the parlour. The cross-passage screen was removed in the 19th century when a centralised entry was created between the hall and parlour, and a fireplace was inserted backing onto the hall chimney. The ceiling of the cross-passage remains intact with widely-spaced joists between the beams. The byre was originally lofted upon two beams, the lower one having angle stops. The loft is accessed through an inserted door from the head of the hall stair. The byre has two trusses similar to those in the house; the lower one is of fine quality, with morticing indicating an earlier collar, suggesting it may have been reused. Triple purlins are also present.

Local climate

Ty-llwyd sits in a wetter-than-average part of the UK, with an average of 1,020 mm of rain a year. This makes it wetter than 81% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 75% of listed buildings.

It experiences an average of 43 freeze-thaw cycles a year, more than 81% of listed buildings. Of these, 20 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.

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