How to measure this project
Measure the deck perimeter where skirting will actually be installed and record access doors, stairs or intentionally open sections as separate deductions. Measure skirt height at representative points. If grade changes substantially, divide the perimeter into shorter zones with their own heights rather than relying on one average that hides a large triangular or stepped condition. Preserve each zone so later product changes do not require remeasuring the deck.
Before you buy materials
Use the actual panel face dimensions or usable lattice sheet size for the selected material. The area method is a purchasing reference and does not optimize seam placement, panel orientation, ventilation openings or access framing. Large offcuts may be reusable when the pattern and frame layout permit, but do not assume they fit every bay. Confirm ground clearance, ventilation and fastening requirements before the final order.