Grammar School is a Grade II* listed building in the Flintshire local planning authority area, Wales. First listed on 22 October 1952. School.
Grammar School
- WRENN ID
- open-chapel-woodpecker
- Grade
- II*
- Local Planning Authority
- Flintshire
- Constituency
- Clwyd East MP: Becky Gittins (Lab)
- Country
- Wales
- Date first listed
- 22 October 1952
- Type
- School
- Address
- Grammar School, Northop, Mold
- OS grid reference
- SJ 246 685
- Coordinates
- 53.20838, -3.12942
- Source
- Cadw listing
Description
The grammar school is a single range built north-south, dating from the 18th century. It is constructed of rubble sandstone with a slate roof, and sits within a group value context, reflecting its significance. The two-storey, three-window front faces west. A stone stack is located to the left, with raised stone copings on the gables and a prominent, moulded plinth runs along the base. The windows are three-light mullioned with flat heads; each light has a round head with incised triangular spandrels and plain, chamfered mullions, filled with small-pane diamond glazing. The front entrance is offset to the far left, featuring a shallow Tudor-arched head and chamfered jambs, leading to a ribbed wooden door. The lower-storey windows to the centre and right have hoodmoulds, but the three upper-storey windows do not. The north gable end has a three-light mullioned window offset to the left, and a doorway – the original entrance – blocked with stone to the far right. Above, to the left and right, are two-light mullioned windows (without round-headed lights), also blocked with stone. A similar blocked window is located on the rear (east) side, to the right of the upper storey. The ground floor to the left and centre of the rear side has three-light Tudor windows without hoodmoulds, while an opening to the right has been infilled. A large, central four-light window with a transom is present on the south gable end; again, all the lights have round heads.
The interior is open-plan with five bays. Reused roof trusses are retained, including a pair of 15th and 16th century arched-brace trusses on the south side. The braces are attached to chamfered tie beams, with raked struts above the collars. Two Queen-post trusses are located to the north; the one furthest north was originally a collar-beam truss, later altered with a tie beam and queen struts added beneath. The tie beam is said to bear an inscription 'IR 1762'. Each roof pitch has two purlins. Other details include a flagstone floor, and raked sills and reveals to the windows. A former gallery for the school master's accommodation once existed at the north end, but has been removed. This was accessed from a former first-floor doorway in the north gable end, offset to the left and now blocked. A square fireplace opening is located to the right, with a misaligned lintel. Two infilled window openings are visible on the outer sides of the walls. The blocked entrance to the far left of the lower storey is indicated by a narrow lintel, and blocked windows on each storey are visible to the left of the east wall.
Local climate
Grammar School receives an average of 910 mm of rain a year. This makes it wetter than 68% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 86% of listed buildings.
It experiences an average of 30 freeze-thaw cycles a year, fewer than 64% of listed buildings. Of these, 15 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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