East and South Barns at Whelpley Ash Farm is a Grade II listed building in the Dacorum local planning authority area, England. First listed on 2 December 1986. Barn.

East and South Barns at Whelpley Ash Farm

WRENN ID
ancient-chalk-bracken
Grade
II
Local Planning Authority
Dacorum
Constituency
Hemel Hempstead MP: David Taylor (Lab)
Country
England
Date first listed
2 December 1986
Type
Barn
Address
East and South Barns at Whelpley Ash Farm, Chesham Road, Bovingdon
OS grid reference
TL 004 033
Coordinates
51.71982, -0.54789
Source
Historic England listing

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

Description

The East and South Barns at Whelpley Ash Farm are two barns that are joined at right angles, dating from the mid-17th century for the southern barn and the later 17th century for the eastern barn. They feature timber frames resting on brick sills, with dark weatherboarding and steep red tile roofs.

The older southern barn consists of six bays and has a gabled porch that projects to the south, positioned off-centre to the west. It has jowled posts with long straight braces connecting to the tie-beams. The roof is supported by inclined queen-posts that hold a clasped-purlin on each slope, with the principal not diminished above the notch that houses the purlin. There is a collar truss in the porch area.

The eastern barn has three narrow bays at the northern end, featuring jowled posts and curved inclined queen-posts in the roof. There are housings for former axial floor beams located between the tie-beams, and mortices in the posts indicate a former floor structure. A lower floor has been added to this barn. The bays at the southern end have unjowled posts, while the northern bay next to the road has been largely rebuilt in the 19th century.

Local climate

East and South Barns at Whelpley Ash Farm sits in a drier-than-average part of the UK, with an average of 720 mm of rain a year. This makes it drier than 84% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 83% of listed buildings.

It experiences an average of 33 freeze-thaw cycles a year, fewer than 54% 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.

More on this building

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