Vertical Winding Engine House at the Former Wynnstay Colliery is a Grade II* listed building in the Wrexham local planning authority area, Wales. First listed on 22 February 1995. Hall.
Vertical Winding Engine House at the Former Wynnstay Colliery
- WRENN ID
- plain-tracery-thrush
- Grade
- II*
- Local Planning Authority
- Wrexham
- Constituency
- Montgomeryshire and Glyndwr MP: Steve Witherden (Lab)
- Country
- Wales
- Date first listed
- 22 February 1995
- Type
- Hall
- Address
- Vertical Winding Engine House at the Former Wynnstay Colliery, Plas Madoc, Ruabon
- OS grid reference
- SJ 293 432
- Coordinates
- 52.98225, -3.05342
- Source
- Cadw listing
Description
The Vertical Winding Engine House at the former Wynnstay Colliery is a Grade II* listed building made of sandstone ashlar with cast-iron fixings. The southeast elevation features a tall arched opening with a stone architrave and keystone that nearly reaches the eaves level, flanked by two similar, lower arched openings. The right-hand return has a gabled roof with shaped kneelers and includes two tall arched openings, each with stone architraves and keystones, beneath which are low masonry arches. The left-hand return mirrors the right but lacks the low masonry arches. The rear of the building has one tall arched opening that is flush with a projecting keystone.
Inside, the structure is divided into three chambers by two massive masonry walls, each wall featuring three arched openings with cast-iron boxes set into the wall above each arch. The side chambers contain massive stone engine beds.
Local climate
Vertical Winding Engine House at the Former Wynnstay Colliery receives an average of 880 mm of rain a year. This makes it wetter than 65% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 89% of listed buildings.
It experiences an average of 43 freeze-thaw cycles a year, more than 84% of listed buildings. Of these, 24 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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- No EPC on record for this property
- No sale records on file
- No related consent applications matched
- Detailed attributes — period, style, materials, features
- Flood risk assessment
- Radon risk assessment
- Weather exposure and heating demand — rain and frost month by month and year by year, wind direction, solar and humidity
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