Big Barn at Corneybury is a Grade II listed building in the East Hertfordshire local planning authority area, England. First listed on 13 December 1984. Barn.

Big Barn at Corneybury

WRENN ID
scattered-rotunda-owl
Grade
II
Local Planning Authority
East Hertfordshire
Constituency
North East Hertfordshire MP: Chris Hinchliff (Lab)
Country
England
Date first listed
13 December 1984
Type
Barn
Address
Big Barn at Corneybury, Royston Road (A10), Wyddial
OS grid reference
TL 358 307
Coordinates
51.95896, -0.0247
Source
Historic England listing

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

Description

The Big Barn at Corneybury is an early 17th-century barn constructed with a timber frame and weatherboarded exterior, featuring a steeply pitched roof that is half-hipped at the east and now covered with slate. This five-bay aisled barn faces south and includes a gabled central porch at the south with double doors located on the rear wall opposite. The structure is supported by heavy square jowled arcade posts that rest on spur sill-walls, with long curved braces extending to cambered tie-beams. Aisle-ties are also present, featuring curved braces from the jowled wall-posts. The roof is designed with clasped purlins, collars, and one purlin on each slope. The arcade plates over the posts are joined with face-halved bladed scarf joints. Additionally, spaced battens are installed under the eaves to allow for ventilation. There is a 20th-century shed attached to the south, which is not considered of special interest.

Local climate

Big Barn at Corneybury sits in one of the driest parts of the UK, with an average of 700 mm of rain a year. This makes it drier than 92% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 78% of listed buildings.

It experiences an average of 35 freeze-thaw cycles a year, more than 59% of listed buildings. Of these, 17 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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  • Detailed attributes — period, style, materials, features
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