I just last night installed black foam board as skirting for my layout. I used extra long thumb tacks with a clear head to hold it in place. Using the clear thumb tacks makes it easy to remove a panel/s when I have to get under the layout. It looks good ... at least to me.
Over the Thanksgiving holiday I'll easily remove the panels and paint the wood facia black then reinstall the panels after the paint drys. Later today, I'll try to get a photo up of what I have done so far.
