Skirting is basically screening along the bottom of a deck that conceals the underside of the deck frame. It can also keep out animals and debris. Most decks display skirting. You can choose to turn skirting off if you want. If displaying skirting, you can select the skirting material you want to use, such as lattice.
To control the display of skirting on your deck:
Select the deck by clicking on one of its edges.
Right-click and select Properties, or select Edit > Modify Elements > Properties.
In the Decks dialog, select the Accessories tab.
If you want to display skirting on your deck, check the Include skirting on selected edges check box.
Click the Select button in the Skirting area, then select the desired skirting material from the catalog.
Click OK.