Covering the underside of your deck can provide many benefits. It helps protect the framing and floor joists from moisture damage and rot. It can also make the space under your deck more usable for storage or other purposes. There are several options for covering the underside of a deck, each with their own advantages and disadvantages. In this article, we will examine the most common materials used for deck skirting and provide tips on how to choose the right option for your needs.
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Why Cover the Underside of Your Deck?
Here are some of the key reasons you may want to cover the underside of your deck:
- Protects framing from moisture – Uncovered joists and beams are exposed to rain, snow and irrigation. Covering them helps prevent rot and decay.
- Creates usable storage space – Adding skirting encloses the area under your deck, allowing you to use it for storing patio furniture, tools and more.
- Improves appearance – Skirting gives the deck a more polished, finished look by hiding the structural supports and any items being stored underneath.
- Increases energy efficiency – Skirting can help insulate the deck, preventing heat loss in colder climates.
- Deters pests – Rodents, insects and other pests are less likely to nest under your deck if the area is enclosed.
While covering your deck underside does require an added investment, it is relatively inexpensive and can extend the life and enhance the function of your deck.
Common Materials for Deck Skirting
There are several options when it comes to selecting a material to skirt your deck with. Here are some of the most popular choices:
Lattice
Lattice is one of the most common and affordable materials used for skirting decks. It comes in preassembled panels that typically measure 2×8 feet and are made of interlocking wooden slats.
Pros:
- Inexpensive
- Simple installation
- Allows for air circulation
- Variety of material options – vinyl, composite, wood
Cons:
- Doesn’t fully enclose area under deck
- Offers minimal insulation value
- Wood requires periodic staining or sealing
PVC Panels
PVC skirting panels are made of durable, weather-resistant vinyl. They are sold in sizes that typically range from 4×8 to 4×10 feet.
Pros:
- Low maintenance
- Never needs painting
- Resists moisture, warping and rot
- Easy to clean
Cons:
- More expensive than basic lumber or lattice
- Not as breathable as lattice – moisture can collect between panels
Wood Panels or Planks
You can create skirting using traditional wood panels or planks made of plywood, LP SmartSide or cedar. These should be pre-primed and painted or stained for weather protection.
Pros:
- Natural appearance
- Durable when properly sealed
- Can match existing deck boards
Cons:
- Requires more maintenance – periodic staining and sealing
- Prone to rotting and swelling if moisture isn’t managed
Metal Panels
Metal panels like aluminum and galvanized steel can also be installed as deck skirting. These are lightweight yet durable options.
Pros:
- Long lasting
- Low maintenance
- Resists moisture and rotting
- Variety of colors/finishes available
Cons:
- More expensive
- Heat conduction can be an issue in some climates
- Prone to dents and scratches
How to Choose the Right Material
When selecting a skirting material, here are a few key considerations:
- Climate – In wet, humid areas, choose materials less prone to moisture damage like vinyl, composite woods or metal panels. In hot climates, avoid darker colors that absorb heat.
- Usage – If you plan to use the area under the deck for storage, opt for a solid material like wood panels over lattice which allows debris to fall through.
- Appearance – Select a style and color that complements your existing deck. Curved or decorative panels can add visual interest.
- Budget – Less expensive options like basic lumber and lattice keep costs down. PVC and metal panels are longer-lasting but have a higher upfront cost.
- Maintenance – Some materials like pressure-treated lumber require periodic staining or sealing. Low-maintenance vinyl and metal skirting saves on upkeep.
Analyze your specific needs, climate and budget to narrow down the ideal skirting solution for your deck. Combining materials is also an option to optimize function and aesthetics.
Installing Deck Skirting
Installing deck skirting takes some DIY skills, but is very doable as a weekend project for most homeowners. Here are the basic steps:
What You’ll Need
- Measuring tape
- Circular or miter saw
- Drill/driver
- Level
- Fasteners – exterior wood screws or decking screws
- Selected skirting materials cut to size
Instructions
- Measure the underside perimeter of your deck. Calculate the total square footage to determine how much skirting you need.
- Cut panels to required lengths using a circular saw or miter saw. Pre-drill edges to prevent splitting.
- Start at a rear corner, placing the first panel against a perimeter joist. Use a level to ensure it’s plumb.
- Attach using exterior wood screws, placing one about every 12-16 inches along the top and bottom edges. Predrill holes.
- Install subsequent panels, overlapping edges by at least 1-2 inches to allow for drainage. Stagger seams between rows.
- For lattice panels, secure using deck screws and washers through the open squares into each joist.
- Use silicone caulk to seal any gaps at seams or around posts and skirt edges.
- Consider adding trim boards along the top perimeter for a finished look.
Pro Tip: Allow 1-2 inches of ventilation gap between the bottom of the skirting and ground. This helps airflow and drainage.
Costs and Benefits of Deck Skirting
Installing skirting under your deck is an affordable way to enhance its function and appearance. Here is an overview of typical costs along with the benefits:
Cost Breakdown
| Skirting Material | Average Cost per Sq. Ft |
|---|---|
| Pressure-treated lumber | $1 – $3 |
| Cedar or redwood boards | $3 – $10 |
| Composite lumber | $3 – $12 |
| PVC or vinyl panels | $3 – $7 |
| Aluminum panels | $4 – $10 |
| Lattice panels | $1 – $5 |
These prices do not include any framing lumber, support posts or footings that may be needed. Expect to pay $3 to $15 per square foot when factoring in labor costs of installation.
Return on Investment
While skirting under your deck does require an upfront cost, it pays dividends in the long run:
- Adds usable storage space
- Extends the deck’s lifespan by protecting framing
- Saves on maintenance costs compared to uncovered framing
- Boosts property value for future resale
- Improves energy efficiency and comfort
- Enhances overall appearance
Investing in quality skirting is one of the smartest upgrades you can make to finish your deck space and get the most out of it for years to come.
Conclusion
Covering the underside of your deck keeps your framing structurally sound while also allowing you to utilize the space below your deck for storage or other uses. There are many affordable skirting options to choose from including lattice, PVC panels, plywood, and metal. Consider factors like climate, appearance, maintenance and budget when deciding on the best material for your needs. With proper installation, you can transform the space under your deck with skirting as a smart way to enhance functionality and aesthetics.