The Old Grammar School is a Grade II listed building in the Wrexham local planning authority area, Wales. First listed on 14 May 1988. Mill.

The Old Grammar School

WRENN ID
moated-cornice-mint
Grade
II
Local Planning Authority
Wrexham
Constituency
Montgomeryshire and Glyndwr MP: Steve Witherden (Lab)
Country
Wales
Date first listed
14 May 1988
Type
Mill
Address
The Old Grammar School, Ruabon, LL14 6DS
OS grid reference
SJ 302 438
Coordinates
52.98723, -3.04046
Source
Cadw listing

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

Description

The Old Grammar School is a building with a rectilinear plan and an extension on the left side. It is constructed from uncoursed sandstone rubble with squared quoins and features a slate roof, along with some alterations and additions made from red brick. There is a lateral stack of stone rubble that is placed off-centre, which has a later tapered brick stem. The first-floor windows, likely from the early 19th century, have hipped roofs that rise above the eaves line. At the time of inspection, these windows and others were being reconstructed or replaced. The ground floor has undergone alterations and rebuilding, with most openings now blocked. A partially blocked timber mullioned window can be seen to the right of the stack, along with an entrance featuring a 20th-century door to its right. The rear elevation also had windows that were being reconstructed and altered during the inspection.

Attached to the east gable end is a hearse shed, which has a hipped lean-to slate roof and a dressed chamfered arch opening with pointed boarded doors.

Inside, the ground floor features large stop-chamfered cross beams and stop-chamfered secondary beams, with some replacements and repairs. There is a fireplace with dressed stone jambs and a lintel inscribed with the date 1698 located in the front wall. The upper floor contains one lateral timber-framed wall, and a roof truss is partially visible. The tie-beam and some purlins exhibit 17th-century characteristics and are likely reused, while other timbers and iron cramps appear to be from the early 19th century. Additional partitions relate to a conversion that took place in the 1990s.

Local climate

The Old Grammar School receives an average of 850 mm of rain a year. This makes it wetter than 59% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 92% of listed buildings.

It experiences an average of 37 freeze-thaw cycles a year, more than 70% 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.

More on this building

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  • No EPC on record for this property
  • Sale history — 6 transactions since 1998
  • No related consent applications matched
  • 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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Nearby listed buildings

  1. Hearse Shed Grade II 11 m
  2. Former School House to Old Grammer School Grade II 11 m
  3. Stonehurst Grade II 20 m
  4. Spring Lodge (including Forecourt Walls and Railings) Grade II 26 m
  5. Church of St Mary, including churchyard walls and lych gate Grade I 36 m
  6. Sundial on the Churchyard to Church of St Mary Grade II 60 m
  7. Round House Grade II 60 m
  8. Mary's Salon Grade II 71 m
  9. Almhouses Grade II 95 m
  10. Wynnstay Arms PH Grade II 97 m