Thwaites Mill is a Grade II listed building in the Lake District National Park local planning authority area, England. First listed on 14 July 1989. Mill.

Thwaites Mill

WRENN ID
upper-mantel-fog
Grade
II
Local Planning Authority
Lake District National Park
Constituency
Barrow and Furness MP: Michelle Scrogham (Lab)
Country
England
Date first listed
14 July 1989
Type
Mill
Address
Thwaites Mill, Millom Without, Cumberland
OS grid reference
SD 182 866
Coordinates
54.26886, -3.25702
Source
Historic England listing

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

Description

Thwaites Mill is a cornmill and sawmill located in Millom Without, likely built in the 19th century, with a sawmill added in the late 19th century. The structure is made of stone rubble with some ashlar dressings and features slate roofs. The cornmill section to the west has gabled wings on the south and north sides, with small square windows, some of which are boarded. Two first-floor windows have small-paned fixed glazing, and the entrances on the south and west sides are fitted with plank doors. The north wing is built into the slope of the ground.

To the east, there is a gabled wheelhouse that contains an iron and timber wheel, which is fed by an enclosed concrete channel coming from the north. The sawmill is attached to the east of the cornmill. The gable ends of the building feature ball finials. The large south wing, which was originally open-fronted, has now been infilled with corrugated iron. The rear of the building has a large entrance with a pentice and a boarded window. The interior has not been inspected but is said to retain its machinery.

Local climate

Thwaites Mill sits in one of the wettest parts of the UK, with an average of 1,600 mm of rain a year. This makes it wetter than 99% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 99% of listed buildings.

It experiences an average of 21 freeze-thaw cycles a year, fewer than 78% of listed buildings. Of these, 9 follow at least 1 mm of rain in the preceding 48 hours. Average temperatures at this location have risen by 0.2°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
  • Flood risk assessment
  • Radon risk assessment
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