Barn at Maindiff Farm is a Grade II listed building in the Monmouthshire local planning authority area, Wales. First listed on 5 February 1998. Barn.

Barn at Maindiff Farm

WRENN ID
stubborn-cupola-cream
Grade
II
Local Planning Authority
Monmouthshire
Constituency
Monmouthshire MP: Catherine Fookes (Lab)
Country
Wales
Date first listed
5 February 1998
Type
Barn
Address
Barn at Maindiff Farm, Abergavenny, Llantilio Pertholey
OS grid reference
SO 312 151
Coordinates
51.83033, -2.99899
Source
Cadw listing

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

Description

The barn at Maindiff Farm is a Grade II listed structure built from roughly squared red sandstone rubble, featuring some red brick dressings and a Welsh slate roof. It has central opposed doors with a large gabled porch on the outside, which includes diagonally boarded doors, while the yard side has plain double doors. The Victorian end of the barn displays three long vertical slits on either wall, along with an additional slit beyond the doors that are divided in two for the tallet. Any earlier openings in the walling are now blocked. The Victorian gable end features a large elliptically headed window measuring 3 by 4 feet, with a slit vent below, which likely served as a taking-in door to the tallet.

Inside, the barn is very spacious, consisting of nine bays. At one end, there are two principal rafter trusses that are probably from the 18th century, while the other six are machine-sawn Victorian Queen post trusses with iron straps. The structure includes two tiers of staggered purlins and secondary rafters, which are likely all from the late 19th century.

Local climate

Barn at Maindiff Farm receives an average of 960 mm of rain a year. This makes it wetter than 74% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 71% of listed buildings.

It experiences an average of 45 freeze-thaw cycles a year, more than 86% of listed buildings. Of these, 22 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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