This will depend on what type of interlocking slate you are using and where you are installing it. In many cases our Riven Edgemere slate, which is designed to more closely resemble a natural slate, is accepted by planning departments. However, you will need to check with the local planning office as it will depend on the proposed location.
There is also a new Anthracite colour in our Edgemere range, which is designed to provide a closer aesthetic match to both natural and fibre cement slate. This gives you a cost-effective easy-to-fix option when a slate appearance is required by planning.