Church of St Mary is a Grade II* listed building in the Powys local planning authority area, Wales. First listed on 10 March 1953. A Medieval Church.
Church of St Mary
- WRENN ID
- former-nave-snow
- Grade
- II*
- Local Planning Authority
- Powys
- Constituency
- Montgomeryshire and Glyndwr MP: Steve Witherden (Lab)
- Country
- Wales
- Date first listed
- 10 March 1953
- Type
- Church
- Period
- Medieval
- Address
- Church of St Mary, Llanllugan, Dwyriw
- OS grid reference
- SJ 057 023
- Coordinates
- 52.61067, -3.39302
- Source
- Cadw listing
Description
The Church of St Mary is a Grade II* listed building featuring an undivided chancel and nave, a south porch, and a west bellcote. It dates from the early Perpendicular period and is constructed with random masonry beneath a partially new slate roof, showing signs of rebuilding, especially on the north and east sides.
On the south elevation, there are three square Perpendicular windows with flat heads: two in the nave and one in the chancel, each containing two lights with trefoiled heads. The head of the chancel window is slightly splayed. The chancel's south elevation also has a blocked doorway beneath an elliptical, chamfered stone lintel, which may have led to the cloisters. The south porch features a steeply pitched roof and a segmental-arched entrance, with a planked south door that is also under a segmental-arched head and has two orders of cavetto mouldings.
There is a small cusped window on the north side, which is part of a blocking for a former north door that had a pointed arch with long narrow voussoirs. To the west of this area are some protruding stones indicating the presence of a former porch. The east window, in the Perpendicular style, is slightly off centre and features panel tracery with three lights, each having cinquefoiled arched heads and smaller lights above. All the windows are fitted with ferramenta. The west bellcote is simple, consisting of a projection of the roof line supported by curved, raked struts.
Inside, the medieval roof structure has undergone some alterations and includes arched collar beams with raked, cusped struts and two tiers of short, cusped wind braces. Some trusses have a tie beam at wall plate level. The stained glass in the east window, depicting a crucifixion, a king, an abbess, and a Latin inscription, is said to be from the 15th century but was reassembled in 1891. There are also 19th-century wall memorials. A small circular font, dating from around 1200 and possibly once decorated, sits on a modern hexagonal base and square plinth.
Local climate
Church of St Mary sits in a wetter-than-average part of the UK, with an average of 1,060 mm of rain a year. This makes it wetter than 85% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 77% of listed buildings.
It experiences an average of 43 freeze-thaw cycles a year, more than 81% of listed buildings. Of these, 23 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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- No EPC on record for this property
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- Detailed attributes — period, style, materials, features
- Flood risk assessment
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- Weather exposure and heating demand — rain and frost month by month and year by year, wind direction, solar and humidity
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