Hen Dy Cwrdd Unitarian Chapel is a Grade II listed building in the Merthyr Tydfil local planning authority area, Wales. First listed on 19 June 1985. Bridge.
Hen Dy Cwrdd Unitarian Chapel
- WRENN ID
- grey-ashlar-russet
- Grade
- II
- Local Planning Authority
- Merthyr Tydfil
- Constituency
- Merthyr Tydfil and Aberdare MP: Gerald Jones (Lab)
- Country
- Wales
- Date first listed
- 19 June 1985
- Type
- Bridge
- Address
- Hen Dy Cwrdd Unitarian Chapel, Cefn Coed-Y-Cymmer, Vaynor
- OS grid reference
- SO 032 078
- Coordinates
- 51.76105, -3.4038
- Source
- Cadw listing
Description
This is a Unitarian chapel, built in 1747 and substantially rebuilt in 1853, with later additions in 1895 and 1991. The chapel is stuccoed with a slate roof. The front facade is pedimented, two storeys high, and has three bays. The upper section features a cornice and frieze that projects forward above the ground floor, following the lines of four pilaster strips. Originally, a second frieze existed, mirroring the projecting pilasters, but this was simplified to plain pilasters. The first floor has two ashlar roundels, each containing three smaller stone roundels. A central triple window features three arched lights with ashlar heads, bases, and column shafts with moulded capitals. Arched stucco hoodmoulds are above the roundels and the central triple arched window. The ground floor has arched windows on each side, with ashlar 2-light and roundel tracery, a low transom above two blind bottom panels, and stucco hoodmoulds. A large, arched doorway is centrally located, with a hoodmould that was formerly extended outward as a string course over the flanking pilasters and originally featured sunk spandrel panels over the arch. Inscriptions in raised capital letters are displayed: below the central window reads "Hen Dy Cwrdd," and below that, "Built 1747 Rebuilt 1853. 1895. 1991." The arched doorway is inscribed with "I ni nid oes ond un Duw y Tad." The entrance comprises double doors with a fanlight. The side elevations are stuccoed, two storeys high, and have three windows each. These feature arched windows above and square-headed windows below; all have glazing bars. Prior to 1991, the windows were linked vertically with panels between. Inside, a three-sided gallery of pitch pine with canted angles and cambered-headed panels, is supported on moulded brackets. Five fluted iron columns with ornate capitals and mid-rings, likely dating from 1853, are present. Two six-panel lobby doors and a window containing stained glass depicting The Good Shepherd, originally from the demolished Capel Coffa Aubrey (Welsh Wesleyan chapel at Cefn), are also features. Patterned coloured glass from the late 19th or early 20th century is found in the triplet behind the gallery. The chapel has pitch pine pews with boarded backs. A large pitch pine pulpit platform has stairs with turned balusters and newels with finials on each side, leading to a panelled projecting three-sided pulpit with quarter-round angles.
Local climate
Hen Dy Cwrdd Unitarian Chapel sits in one of the wettest parts of the UK, with an average of 1,270 mm of rain a year. This makes it wetter than 94% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 85% of listed buildings.
It experiences an average of 54 freeze-thaw cycles a year, more than 94% of listed buildings. Of these, 30 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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- 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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