In general, deck builders recommend using screws - particularly deck screws - when joining decking boards. Screws are better at holding things together - they don't rust as easily and don't pop up eventually. Nails that rise or pop up are dangerous, so it's best to avoid using them. If you'd like to DIY your decking project, we suggest consulting with a decking contractor near you beforehand. They'll help you pick the best building materials or even build the deck for you and your family!