If you’re building a deck in the United States today, it’s almost a foregone conclusion that the frame will be made from pressure-treated lumber. It’s how decks have been made for a very long time, and builders, contractors, designers, and homeowners alike don’t usually give this step a second thought. Fortress Building Products, however, is a company that consistently breaks barriers and thinks outside the box, and they have devised a better way to approach deck framing systems.

It’s no secret that issues of sustainability and eco-friendly materials have been increasingly on consumers’ minds. Price and aesthetics are obviously always going to play a huge role in any purchasing decision, but all other factors being equal, sustainability is becoming more and more prevalent in the decision about where to spend hard-earned dollars. If you’re thinking about adding a deck to your home or giving an existing outdoor living space a facelift, here are five eco-friendly options to incorporate into your design.