Home Improvement Outdoors Decks & Patios

How to Install Lattice Under a Deck

Wood vs. Plastic, Lattice Alternatives, and Installation Instructions

Updated on 12/06/22

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Basics of Installing Deck Lattice

Lattice is available in either plastic or wood. Since both are commonly available in 2-foot and 4-foot heights, you can cover a deck up to that height with a single piece of lattice, add more lattice for higher decks, or cut down the lattice for lower decks.

When installed by a professional, deck skirting typically costs between $2 and $50 per linear foot depending on the type of skirting used. Most lattice is sold in 8-foot long sections. The cost to install lattice under your deck will also be influenced by its height: For example, a panel of 2-foot tall wood lattice costs about $12 to $16, while a 4-foot tall panel costs about $30 to $35. Plastic lattice costs $16 to $20 for a 2-foot tall panel and about $26 to $36 for a 4-foot tall panel.

A few solid attachment points for lattice are found on the deck. On top, the lattice can be fastened to the deck's rim joist or beam. On the sides, it can be attached to the vertical posts. Because horizontal support is needed for the bottom, you will need to install a two-by-four stringer from post to post.

Plastic Lattice for Decks

Pros

Impervious to insects or rot
Molded as one piece
Available as a deck kit

Cons

Paint does not stick well
Limited color choices
Must be cleaned rather than painted over

Plastic lattice is made of vinyl and comes in 8-foot lengths that are 2 to 4 feet high. Both diamond and square styles are usually available. While white lattice is often in stock at many home centers, a few other colors such as black, green, gray, or brown are available by special order.

Molded as one piece, plastic lattice holds together well when cut. Because the lower area of decks is often in contact with vegetation, vinyl's durable, water-resistant nature reduces maintenance.

Yet plastic lattice provides fewer style choices than wood lattice. It cannot be stained. Painting plastic lattice is possible to some degree. But you lose the benefit of plastic's baked-in color by painting it. When plastic lattice has become discolored, the solution is to clean it since it cannot be painted.

Wood Lattice for Decks

Pros

Stainable to wood tones
Paintable
Rigid, sturdy

Cons

Requires regular maintenance
Slats can dislodge from the lattice
May twist out of square

Wood lattice is typically constructed in the factory from cedar or another hardy species of wood. Wood lattice comes in 8-foot lengths that are 2 to 4 feet high.

A chief advantage of wood lattice is that you can control the style. Since the wood comes uncoated, it can be stained, painted, or left to weather on its own. Wood is rigid, so it won't bend as much as plastic lattice.

Wood lattice, though, does require frequent maintenance by repainting or applying more protective coating. Since wood lattice is made from individual slats, these slats can become detached when you are cutting it.

Lattice Alternatives for Under Decks

Even if you're not interested in using wood or plastic lattice, there are plenty of ways to add privacy below your deck. Instead of lattice, you can use any of the following options as deck skirting:

Faux or natural stone
Metal or plastic decorative screens
Wood pressure-treated boards (vertical or horizontal)
Decorative wood panels
Wire fencing
Trellis

In any case, your choice of deck skirting should allow for plenty of air ventilation. The buildup of moisture below your deck can quickly lead to wood rot and mold, shortening the life of your deck. Plan for gaps between wood boards, opt for decorative screens with holes designed into the product, or leave spaces between stones to make any of these lattice alternatives effective for years to come.

Codes, Regulations, and Permits

Building a deck often requires a permit in many areas. Installing lattice under a deck may not require a permit, but you should always check with your building department for confirmation.

Safety Considerations

Always wear eye and hearing protection when cutting or fastening plastic or wood lattice to a deck.

Equipment / Tools

Cordless drill
Circular saw
Electric miter saw
Tape measure
Pencil
Square

Materials

Plastic or wood lattice
3 Flat wood or PVC 1-3/4 inch by 8 foot molding strips
2 Galvanized reinforcing L-angles
1 Pressure-treated two-by-four
1/2-inch stainless steel screws

How to Install Lattice Under a Deck

Measure and Cut the Stringer

With the tape measure, measure the inside distance between two of the deck posts. Transfer this measurement to the two-by-four. Cut the two-by-four with the circular saw or miter saw.
Install the L-Angles

With the cordless drill, attach the L-angles to the sides of deck posts. Step back the L-angles by 1 1/2 inches from the front of the posts. For height, the L-angles should be kept as low as possible, but not so low as to interfere with deck piers or to touch the ground.
Install the Stringer on the Deck

Have an assistant hold the two-by-four as a stringer against the L-angles while you go under the deck with the cordless drill. Drill the two-by-four into place against the L-angles.
Measure the Coverage Area

The lattice should reach the bottom of the stringer two-by-four and 1/2-inch below the deck floorboards. On the side, the lattice should reach the center of the posts, less 1/4-inch.
Cut the Lattice to Size

Transfer the measurements to the lattice. For vinyl lattice, use a blade suitable for cutting plastics. For wood lattice, use a fine-toothed blade.
Attach the Lattice to the Deck

Pre-drill holes every 24 inches around the perimeter of the lattice. The holes should be slightly larger in diameter than the screws that you'll use to fasten the lattice to the deck. Hold the lattice against the installation area and screw it into place. The lattice should be able to slightly move to allow for expansion and contraction.
Attach the Moulding Around the Lattice

Measure all four sides of the lattice. Transfer those measurements to the molding (which can be either plastic or wood) before cutting the moulding.

Frame the lattice under your deck by attaching the moulding with screws. Each screw should run from the moulding to the rear attachment point, but not piercing the lattice. The lattice should be free to move.

FAQ

How do you secure lattice to the ground?

Lattice is typically installed inside a frame. Attach your lattice to the bottom edge of the frame to secure it to the ground, ensuring the frame itself is anchored either between existing posts or newly installed posts.
Can you staple vinyl lattice?

Staples can be used for both vinyl and wood lattice. Choose large staples to hold the lattice securely in place if heavy wind or other potentially damaging factors are expected. In most cases, you can simply use stainless steel screws or nails to attach lattice to the frame.
How do you attach lattice to a concrete foundation?

Attach the frame for your lattice to a concrete foundation by drilling into the foundation with a masonry bit. Use masonry screws to secure the wood to the concrete before installing your lattice.
How do you cut PVC lattice?

A circular saw or miter saw can be used to cut plastic lattice. Opt for a medium- or fine-toothed blade rather than a blade with large teeth designed for wood, which can cause rough edges or breaks in the plastic lattice.

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