If it is just one wall and you have just 'Subtracted' the ramp from the wall, there is not much you can do - as it is all one wall still.
However if you duplicate the wall and 'Subtract with upward extrusion' for one wall and 'Subtract with downward extrusion' for the other wall, you will now have 2 walls that you can change the surface of separately.
Barry.
One of the forum moderators.
Versions 6.5 to 27
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