Skirting height can be difficult to judge because the skirting profiles are often different sizes themselves. Generally, the flat portion of the board is what changes, not the profile — there are some profiles of different sizes, ranging from a few mm up to 80mm or even more. If you have a specific requirement in this regard, please let us know, otherwise, the skirting height will usually reflect a change in overall skirting board height as shown below. *
* Not actual size, but for visual comparison, only.