Tyn ffordd fawr is a Grade II listed building in the Snowdonia National Park local planning authority area, Wales. First listed on 25 February 2005. Farmhouse.

Tyn ffordd fawr

WRENN ID
muted-bracket-flax
Grade
II
Local Planning Authority
Snowdonia National Park
Constituency
Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
Country
Wales
Date first listed
25 February 2005
Type
Farmhouse
Address
Tyn ffordd fawr, Vale of Ffestiniog, Maentwrog, Gwynedd
OS grid reference
SH 668 414
Coordinates
52.9535, -3.98302
Source
Cadw listing

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

Description

Tyn Ffordd Fawr is a two-storey farmhouse constructed from mortared rubble masonry, featuring large stones as quoins and lintels. It has a slate roof with slightly advanced eaves and slate-hung verges. The building includes a rectangular stone stack with capping on the right (eastern) gable and an external square stack on the left. The principal elevation faces south towards the road and river valley, showcasing a central boarded door flanked by two-light timber casement windows. The wing on the left likely replaces an earlier service wing and has smooth rendered elevations with modern timber casement windows. The interior was not inspected during the survey conducted in June and July 2003.

Local climate

Tyn ffordd fawr sits in one of the wettest parts of the UK, with an average of 1,440 mm of rain a year. This makes it wetter than 98% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 96% of listed buildings.

It experiences an average of 40 freeze-thaw cycles a year, more than 78% 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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  • Detailed attributes — period, style, materials, features
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  • 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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