Siloa Capel Y Annibynwyr is a Grade II listed building in the Rhondda Cynon Taf local planning authority area, Wales. First listed on 10 January 1991. Chapel.

Siloa Capel Y Annibynwyr

WRENN ID
winter-outpost-hazel
Grade
II
Local Planning Authority
Rhondda Cynon Taf
Constituency
Merthyr Tydfil and Aberdare MP: Gerald Jones (Lab)
Country
Wales
Date first listed
10 January 1991
Type
Chapel
Address
Siloa Capel Y Annibynwyr, Aberdare East, Rhondda Cynon Taff
OS grid reference
SN 999 025
Coordinates
51.71304, -3.44886
Source
Cadw listing

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

Description

Siloa Capel Y Annibynwyr is a simple classical chapel built in the 19th century, featuring a three-bay gabled front. The exterior is rendered and includes end pilaster strips, a stringcourse in the middle, and a cornice that creates a light pediment effect. An oval date plaque is located on the gable. The chapel has a slate roof with wide boarded eaves and round arched windows that have keystones and fluted architraves. The windows are fitted with horned sashes that include marginal glazing bars. The central entrance is also round arched and features double panelled doors topped by a five-pane semi-circular fanlight.

The side elevations consist of four bays with camber headed sashes set in square openings. At the rear, the chapel hall is stepped down and has a steeper roof, with small pane sashes on the sides. The rear gable, which faces the river, is cement rendered and has a small octagonal chimney stack. It features a round arched boarded gable window flanked by circular four-pane windows, with four-pane sashes below. Projecting stones on the southwest corner suggest that another structure may have once been attached here.

The forecourt is marked by rubble piers topped with freestone caps that rise into ball finials at the gated entrance. The gates are inscribed with 'Capel Siloa' on the lock bar, and one of the piers has a commemorative tablet. Iron railings surround the forecourt, with some uprights designed in a barley twist style.

Inside, the chapel features a galleried interior with a herringbone boarded ceiling adorned with roses. The end bays originally had different ornamentation, which has since been removed to the front end. The raked gallery has a panelled and bracketed front supported by cast iron columns. The simple classical 'set fawr' includes quatrefoil punched newels capped by ball finials. The furnishings are made of pitch pine and provide seating for approximately 900 people. There is also an attached vestry or hall that includes ceiling ventilators and a central rose.

Local climate

Siloa Capel Y Annibynwyr sits in one of the wettest parts of the UK, with an average of 1,210 mm of rain a year. This makes it wetter than 92% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 87% of listed buildings.

It experiences an average of 44 freeze-thaw cycles a year, more than 85% of listed buildings. Of these, 22 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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