Islawr is a Grade II listed building in the Snowdonia National Park local planning authority area, Wales. First listed on 19 June 1990. School house.
Islawr
- WRENN ID
- woven-clay-khaki
- Grade
- II
- Local Planning Authority
- Snowdonia National Park
- Constituency
- Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
- Country
- Wales
- Date first listed
- 19 June 1990
- Type
- School house
- Address
- Islawr, Dolgellau, Gwynedd
- OS grid reference
- SH 728 177
- Coordinates
- 52.74248, -3.88431
- Source
- Cadw listing
Description
Islawr is a pair of three-storey houses built from rubble masonry, featuring a gently pitched slate roof with overhanging eaves and close verges. The roof has stone stacks positioned centrally on both the front and rear slopes, along with water tabling.
On the second floor, there are shallow six-pane sash windows located under the eaves. The first and ground floors have modern windows with stone lintels. The doorways are located at the extreme right and left, each with a plain rectangular fanlight above a four-panel door, while Islawr has a modern door.
The rear elevation is two storeys high, with two twelve-pane sash windows in the centre, a smaller twelve-pane sash window to the right, and a later added small two-light casement window to the left.
Local climate
Islawr sits in one of the wettest parts of the UK, with an average of 1,340 mm of rain a year. This makes it wetter than 96% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 93% of listed buildings.
It experiences an average of 34 freeze-thaw cycles a year, more than 52% of listed buildings. Of these, 17 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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