Decking Buying Guide

Your home's outdoor space is an extension of the interior, a place to be enjoyed many months out of the year and some places all year. It makes sense that building or updating a deck can boost the value of your home and provide a peaceful retreat. 

Wood decking is the overwhelming choice for homeowners. But synthetic plank decking offers good looks with less upkeep. Composites, which blend ground-up wood and plastic, have chipped away at wood's popularity. Some even contain recycled plastic.

With so many materials available, it’s tough to know which will stand the test of time. Use this buying guide to consider smart options that fit your budget and help create a space that's both relaxing and easy to care for.

CR members with digital access can see our Decking Ratings, which reflect our updated, two-year exposure score.

Repair or Replace: Is It Time for a New Deck?

If your decking has cracks, looks dirty, or suffers from mildew, it's time to decide whether to refinish or replace it entirely.

Signs of an unsafe deck may not be obvious so safety checks are critical when deciding to repair or replace. Also, if your deck was built before 2004, it's probably made of lumber treated with chromated copper arsenate. Regular refinishing helps to seal in the toxic arsenic that CCA decking contains. But if the finish is flaking or worn off in spots, we suggest hiring a pro who's equipped to safely remove the old finish, dust, and debris and then refinish it. Here are some other considerations to keep in mind.

Weigh Costs
You can save hundreds by replacing the decking yourself. Along with a circular saw you'll need a drill, preferably cordless. Don't skimp on support joists if you choose heavier composites or less-rigid plastics. For wood, solid stains typically yield longer-lasting results. When pricing the materials, be sure to figure in the cost of railings, stairs, and supporting structure as well as the planks under foot. If you're hiring a pro, note that the cost of labor—either to build a new deck or to replace worn planking on an existing structure—can easily exceed the cost of the materials.

Complement Your Home’s Design
The width of the decking, its color and finish, and the design of the railing are important design elements. A ranch, raised ranch, or contemporary house style can work well with many deck designs. It's more challenging to make a deck work with older styles, such as Tudor, colonial, or 1920s bungalow. Many manufacturers of synthetic decking offer a variety of railings, such as provincial or Mission style, that can help the deck fit with the rest of the house.

Sidestep Missteps
Nails and screws are inexpensive, easy to handle, and suitable for nearly any material. But nails can pop loose over time, while screws are more permanent. Ceramic-coated screws come in several colors, which helps them blend in.

To avoid splitting planks, drill pilot holes for nails, countersink screws in wood, and predrill screw holes into composite. Choose zinc-coated or other corrosion-resistant fasteners, and use the right fasteners for composites. Also consider hidden fasteners or systems that hide the attachments.

Before staining, pressure-wash or brush the old surface with a cleaning solution. If there’s any remaining mold and mildew, remove it using a solution of 1 part bleach and 3 parts water. When staining, use as many coats as the manufacturer recommends. And be sure it's at least 50 degrees F from the time stain is applied until it dries completely.

Decking types, including wood, composite, plastic, and aluminum deck boards.
Decking types (from left to right) wood, composite, plastic, and aluminum. For more details see below.

Decking Types

While wood is the most popular type of decking, other materials are catching on with homeowners. Here are four types of decking material to consider. Price estimates are per 100 square feet of decking board, and don't include the cost of other deck-building components.

Wood Decking
Pros: Authenticity. Most is pressure-treated pine, but more expensive options include cedar, redwood, and tropical hardwoods.
Cons: Wood tends to change color, crack, and stain if it isn't refinished. Hardwoods and exotic choices can be expensive.
Price: About $200 to $1,100 or more per 100 square feet.

Composite Decking
Pros: Best for the look of wood without the need to stain. It's made of plastic and wood fiber and sometimes can be stained to change its color. Most now also come with some or all sides encased in plastic to prevent mildew growth.
Cons: Some offered far less resistance to slips, stains, and mildew in our tests. Most choices are heavier and more expensive than the usual pine.
Price: About $300 to $700 per 100 square feet.

Plastic Decking
Pros: Best for resisting the elements without staining. Choices include PVC and polyethylene. It's also lightweight.
Cons: Some can look cheap, some is slippery, and all sagged more than wood.
Price: About $525 to $1,200 per 100 square feet.

Aluminum Decking
Pros: Toughness, rigidity, and slip resistance. Its baked-on or anodized finish should last a long time, and its textured surface added traction in our tests. Sections sometimes interlock so that rain won't drip through.
Cons: It's expensive, and no one would mistake it for wood.
Price: About $500 per 100 square feet.

Deck-Wise Features

For three years, we expose our test boards to harsh weather at test sites in hot and humid Florida, and in hot and dry Arizona. Each year we have the boards sent back to our Yonkers, N.Y. labs and test them on a variety of attributes, including resistance to flexing, slipping, spills and surface damage from dents and wear. Our exposure scores reflect how each model compares with the others in our tests.

CR members with digital access can see our Decking Ratings, which reflect our updated, two-year exposure score. Our tests showed that some synthetic decking didn't make the grade for rigidity, and some tonier wood products look worse for wear.

Here are some more decking features and considerations:

Synthetics Generally Better at Resisting Sun and Spills
Most of the composite, plastic, and aluminum decking we tested kept its original color better than unfinished wood. Many also fended off mustard, wine, and other stains.

Wood Is Stiffer and Surer
Wood resisted slips best in our wet and dry friction tests. Wood also was excellent at resisting bending and sagging. A few plastics and composites came close in those tests, but several flexed or sagged noticeably.

Synthetics Offer a Range of Design Options
Many of the synthetic products are available in colors such as white, gray, and several shades of brown. Surface textures include smooth (like plastic lawn furniture, in some cases), subtle wood grain, ridges, and other decidedly nonwood-like patterns. Some composite planks are flexible enough to be easily curved into patterns or shapes that would be expensive to duplicate in solid wood.

New Fasteners Improve Looks and Ease Installation
TrapEase is one brand of special-purpose screw intended for use with plastic and composite decking. It has coarse threads at the tip to bite into the deck's supporting joist and finer threads toward the head to stop the decking material from bulging out.

Invisible fasterners suitable for wood or plastics come in three types: metal clips with sharp prongs that dig into the deck planks and the joist, elliptical wafers that fit into a slot cut into the sides of the planks and are held with a screw driven into the joist, and strips that fasten to the joist and underside of the plank. When all the planks are in place, the fasteners don't show.

Snap-in-place fasteners are easy to install but unique to specific brands. One brand of aluminum decking we tested snaps together, much the way tongue-and-groove flooring does. A vinyl decking product we reviewed snapped in place over metal clips screwed onto the joists.

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