![](https://www.sigroofing.co.uk/wp-content/uploads/2021/07/Prestige.jpeg)
Penrhyn Heather Blue
Offering one of the traditional Penrhyn colours, also known as Bangor Blue, and perhaps the best well known Welsh Slate colour.
![](https://www.sigroofing.co.uk/wp-content/uploads/2021/07/Welsh-Penrhyn-Slate-Stack-Edit.jpeg-2.png)
Product Specifications
Performance
Samples have been tested in accordance with, and comply with, the relevant sections of EN12326-1:2014.
- Thermal Cycling T1
- Exposure S02 S1
- Water Absorption W1 (? 0,6%)
- Meets the requirements of NHBC Standards.
- Tested in accordance with ASTM C406-06 classified as Class S1 (expected use 75 years plus). Belgian natural slate technical assessment and approval ATGH747.