Can this be installed on a concrete pad?

Hi Thomas, thank you so much for reaching out to us today! We recommend installing a wooden substructure as the frame for your deck into/onto the concrete pad, then installing your Trex deck boards on top of the underframe if that is your plan for installing your deck. We do not recommend directly installing our deck boards into a concrete pad. Attached is a link for tips to install a Trex deck on top of a concrete pad. We hope this helps and feel free to give us a call at 1-800-289-8739 so we can further assist you. -Trex Customer Care https://au.trex.com/deck-ideas/three-building-tips-deck-over-concrete/