The use of high powered jet washes is not recommended as it can damage the surface of the slate or tile, thus reducing its expected life considerably.
We recommending reading the Roof Tile Association document of "Care, Maintenance & Repair of Clay and Concrete Roof Tiles" for further guidance.
If you have any more questions, feel free to get in touch with our Technical Department at roofing@marley.co.uk
Disclaimer - The information shared in this blog is correct at the time of publication. Guidance, standards, and best practices may change over time, so if you’d like further clarification or the latest updates, please get in touch with the Marley Technical Advisory Team, who will be happy to help.