Former mill at Knight's Mill is a Grade II listed building in the Brecon Beacons National Park local planning authority area, Wales. First listed on 21 October 1998. Mill.

Former mill at Knight's Mill

WRENN ID
deep-flint-tallow
Grade
II
Local Planning Authority
Brecon Beacons National Park
Constituency
Brecon, Radnor and Cwm Tawe MP: David Chadwick (LD)
Country
Wales
Date first listed
21 October 1998
Type
Mill
Address
Former mill at Knight's Mill, Pont-Y-Bryn-Hurt, Llanfihangel Cwmdu with Bwlch and Cathedine, Powys
OS grid reference
SO 194 199
Coordinates
51.87236, -3.17193
Source
Cadw listing

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

Description

The former mill at Knight's Mill is a small, one-storey building with a loft and a low, parallel one-storey wing extending forward on the right side. Constructed from rubble sandstone, it features a stone tile roof that is hipped at the rear. The gable end facing north has a boarded loft door on the left and a two-light 19th-century casement window below it, set in an earlier timber-lintelled doorway. The wing includes two three-light 19th-century wood casements, with the left window having a brick-repaired jamb, and it has boarded doors on the right and at the left end. At the back, there is a 19th-century stone stack.

The right side wall of the mill has a dormer at the rear end, which is fitted with a boarded shutter. The left side wall is a 19th-century rebuild, featuring a stable door offset to the right, flanked by two-light small-pane casements, all beneath wooden lintels. At the left end, there is a small opening under a stone lintel. The rear wall contains a wheelpit with a cast iron overshot waterwheel that has rotten wooden buckets, along with a wooden sluice box. The mill retains a pit wheel and wallower, and it is also said to have a pair of mill stones.

Local climate

Former mill at Knight's Mill sits in a wetter-than-average part of the UK, with an average of 1,100 mm of rain a year. This makes it wetter than 87% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 74% of listed buildings.

It experiences an average of 54 freeze-thaw cycles a year, more than 94% of listed buildings. Of these, 30 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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Nearby listed buildings

  1. Knight's Mill Grade II 14 m
  2. 5 Pont-y-bryn-hurt and former Wash House Grade II 165 m
  3. 4 Pont-y-bryn-hurt Grade II 185 m
  4. 3 Pont-y-bryn-hurt Grade II 194 m
  5. Tower Lodge and Glanusk Bridge (partly in Llanfihangel Cwmdu with Bwlch and Cathedine community) Grade II* 218 m
  6. 2 Pont-y-bryn-hurt Grade II 221 m
  7. 1 Pont-y-bryn-hurt Grade II 230 m
  8. North Lodge aka Glanusk Lodge Grade II 303 m
  9. Walled Kitchen Garden Grade II 314 m
  10. Frame Yard Grade II 340 m