Church of Saint John and Saint Petroc is a Grade II listed building in the Cornwall local planning authority area, England. First listed on 12 March 1986. Church.

Church of Saint John and Saint Petroc

WRENN ID
veiled-pewter-moon
Grade
II
Local Planning Authority
Cornwall
Constituency
Truro and Falmouth MP: Jayne Kirkham (Lab)
Country
England
Date first listed
12 March 1986
Type
Church
Address
Church of Saint John and Saint Petroc, Devoran Lane, Feock
OS grid reference
SW 794 392
Coordinates
50.21181, -5.09277
Source
Historic England listing

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

Description

The Church of Saint John and Saint Petroc is a parish church built in 1855 by J.L. Pearson. It features coursed slatestone with granite quoins, jambstones, plinth copings, a string course, and an ashlar upper stage of the tower, which includes a steep pyramidal spire. The roofs over the nave, chancel, and porch are made of dry Delabole slate and are very steeply pitched. The church exhibits Early English architectural influence and consists of a nave, chancel, southwest tower, south porch, and a small vestry wing located north of the chancel.

The nave has paired lancets on both the north and south walls, and there is a group of three lancets on the west gable end. The chancel features a taller quatrefoil ventilator and an apex chimney. The north wall of the nave is punctuated by weathered buttresses, with an additional buttress on the south wall between the nave and chancel. The tower has a group of three lancets on each wall of the upper stage, equipped with slate louvres and a machicolated eaves cornice, topped by a pyramidal ashlar spire. The porch, located at the angle between the tower and nave, has a pointed arched doorway with an inner arch supported by engaged shafts and moulded imposts, along with a trefoil-headed window in the east wall.

The interior of the church remains unaltered. The nave features an arch-braced roof structure with wind braces, ashlar struts, and small bosses on each truss. The chancel roof has a polygonal vault formed by wooden ribs that spring from turned shafts between the lancets. There is a pointed chancel arch, and the windows of the nave have turned shafts between the lancets. All windows contain coloured and clear glass in geometric designs, with Biblical figures as central features in the east and west windows. An aumbry niche in the north wall of the chancel has a trefoil-headed arch with a hoodmould over turned marble nook shafts. The fittings include a painted polygonal pulpit with a blind arcade of pointed arches on slender marble shafts, and simple pine pews with shaped ends and panelled backs.

Local climate

Church of Saint John and Saint Petroc 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 greater than that of 84% of listed buildings.

It experiences an average of 7 freeze-thaw cycles a year, fewer than 95% of listed buildings. Of these, 3 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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  2. Devoran Primary School and Perimeter Walls and Railings Grade II 76 m
  3. Nos 6 and 7 and Garden Wall and Railings to South Grade II 81 m
  4. Devoran House Grade II 87 m
  5. The Market House, Gate-Piers and Boundary Wall Grade II 88 m
  6. Nos 8, 9 and 10 and Garden Wall and Railings to South Grade II 92 m
  7. 11, 12 (Tideways) 13 and 14 St John's Terrace and garden wall and railings to south Grade II 113 m
  8. 16 and 17 St John's Terrace and garden wall to south and west Grade II 165 m
  9. The Village Hall Grade II 180 m
  10. 18 (Waterside) and 19 St John's Terrace and garden wall to south Grade II 184 m