1. WHAT IS YOUR DECK USED FOR? The first thing to consider is what you will be using your deck for. Different decking boards will hold better under rigorous use. If you plan on holding nightly barbecues or hanging out outside on chairs that scrape and move around, then a sturdier capped board might be for you. If your deck is a place that will be visited less frequently and by fewer people, then a less rugged pressure treated board with a sealant might offer you the results you need at a better price.