Don some Skirting heaters have a separate front panel to keep the surface cool?
Yes, they have slots top & bottom to allow air to pass through them over a series of fins or grilles. They rely on air movement (convection) to distribute the heat. Unfortunately they also distribute the dust and eventually get clogged with cobwebs and dirt and can stain your walls. ThermaSkirt can be wiped clean with a cloth – just like your existing skirting boards.