Whether it’s to beautify a home, create more usable outdoor space, or increase the resale value of a home, new decking and railing products can help. But it’s not just wood decking products that customers want. In fact, discerning homeowners and home buyers are increasingly looking for more-durable decking and railing products.

Because of this, interest in composite-decking products is growing, according to a report from ReportsnReports.com, which states that the composite-decking and -railing market will grow to $3.09 billion in 2020, up from $1.7 billion in 2015. There are several reasons for this growth. First, composite-decking products are durable—especially those made with polypropylene (PP) resin, which resists thermal expansion and contraction and enables the decking to better withstand extreme temperature swings, from freezing winters to sweltering summers. This enables homeowners to enjoy their decks for longer periods of time, with less maintenance, compared with other materials. Additionally, PP resin is stiffer than other resins, enabling manufacturers to create longer decking boards.

Due to these properties, PP composite-decking and -railing products are expected to grow at the highest annual growth rate of all composite-decking materials, including high- and low-density polyethylene resin, at least until 2020, according to the report.

Of course, durable products can come from different types of materials, including metals. That’s why some decking and railing manufacturers are incorporating aluminum and steel into their new products as well. So, if durability is what your customers want, consider these new decking and railing options:

Aluminum Under-Deck System

Designed to keep the area beneath an elevated deck dry, the Haven Underdeck System uses lightweight, durable aluminum panels to channel water to a gutter system and downspouts. Individual panels can be removed without disturbing adjacent ones. havenunderdeck.com

Sleek Steel Framing

Fortress Building Products’ new Evolution light-gauge–steel deck framing features an interlocking joist-and-ledger system that’s engineered to look and install like wood while providing a flat surface that won’t twist, warp, rot, or crack. fortressframing.com

Strong Composite Decking

Deckorators’ new Voyage line of composite decking features the company’s “Eovations technology,” a fiberlike interior structure made from a blend of polypropylene and mineral filler. The manufacturer claims the configuration delivers the industry’s best strength-to-weight ratio, absorbs virtually no moisture, and minimizes thermal expansion or contraction. deckorators.com

Durable Rod Railing

Viewrail’s new, 1/4-inch rod railing is made with 2205 duplex stainless steel and is engineered to resist sagging and be more corrosion resistant than marine-grade 316 stainless steel. The rods are available in lengths of 2 to 20 feet in 1-foot increments. viewrail.com

Composite Decking and Cladding

Terraza’s 4-foot-by-8-foot composite decking and cladding features a resin core and a high-pressure laminate top skin imprinted with a wood texture for slip resistance. The company can CNC-cut the panels into unique shapes to spec or simply rip them to 6-inch, 8-inch, or 12-inch widths for decking. terrazausa.com

Code-Compliant Deck Bracket

Metwood’s MTW deck bracket is code-compliant hardware that can be used to provide a deck-ledger connection on structures with stone or masonry veneer siding. The cold-formed galvanized-steel brackets can also be used to support a ledger in the construction of an energy-efficient house wrapped with a thick layer of rigid foam insulation. metwood.com