12x20 Floating Deck Material List: Complete PDF Download

Planning to build a 12x20 floating deck? The right materials can ensure your project's longevity and aesthetics. Here's a comprehensive, SEO-optimized guide to help you create the perfect material list for your floating deck. We'll break down the essential materials, their purposes, and why they're crucial for your 12x20 floating deck project.

Before digging into the material specifics, consider the advantages of a 12x20 floating deck. This size provides ample space for entertaining, relaxing, or enjoying your outdoor space. Plus, floating decks don't require permits in many areas, making them an attractive DIY option. Now, let's dive into the materials you'll need to bring your 12x20 floating deck dreams to life.

Deck Frame and Structure

The frame and structure of your 12x20 floating deck provide the foundation for your entire project. Using durable, weather-resistant materials is essential for ensuring the longevity and safety of your deck.

Start by choosing the right lumber for your deck frame. Pressure-treated lumber is an excellent choice for outdoor structures as it resists rot, decay, and insect damage. Here are the necessary materials for your deck frame:

Joists and Beams

For a 12x20 floating deck, you'll need 2" x 10" pressure-treated lumber for the joists and beams. The joists support the decking boards, while the beams provide the framework for the entire structure.

Here's a rough estimate of the lumber you'll need:

• 45 pieces of 2" x 10" x 12' for joists
• 11 pieces of 2" x 10" x 20' for beams

Footing and Ledger Board

Floating decks don't require concrete footings, but you'll still need a ledger board to attach your deck frame to your house. Use pressure-treated 2" x 10" lumber for the ledger board.

You'll also need blocking to connect the joists to the ledger board, ensuring a stable and secure attachment. Use 2" x 6" pressure-treated lumber for blocking:

• 30 pieces of 2" x 6" x 9" for blocking

Decking Boards and Railings

The decking boards determine the aesthetics and functionality of your 12x20 floating deck. Choose from various materials, finishes, and patterns to create the perfect outdoor living space.

Here's a material breakdown for your decking boards and railings:

Decking Boards

Pressure-treated lumber is an economical choice for decking boards, but composite or Cedar materials offer lower maintenance and increased durability. Here are your options for 12x20 floating decking boards:

• Pressure-treated lumber: 5/4" x 6" x 12' or 16' boards (around 750 linear feet needed)
• Composite decking: 1" x 6" or 5/4" x 6" boards (around 750 linear feet needed)
• Cedar decking: 5/4" x 6" x 10' or 12' boards (around 750 linear feet needed)

Also, consider composite or metal deckFasteners to secure your decking boards in place. Stainless steel or galvanized fasteners provide the best resistance to corrosion and weathering.

Railings

Railings add safety and style to your 12x20 floating deck. Choose from various materials, including pressure-treated lumber, composite, aluminum, or vinyl.

Here's an estimated material list for your deck railings using pressure-treated lumber and composite railings as examples:

• Pressure-treated lumber: 2" x 4" x 8' and 4" x 4" x 8' for rail posts, top and bottom rails, and balusters (around 300 linear feet needed)
• Composite railings: 2" x 6" and 4" x 4" composite rail posts, balusters, and capping (around 300 linear feet needed)

Hardware and Fasteners

A variety of hardware and fasteners are essential for constructing your 12x20 floating deck. Here's a list of the necessary items:

• 3-1/4" and 2-1/2" deck screws (around 4,000 screws)
• Galvanized or stainless steel hangers and joist brackets
• Ledger lock (to secure your deck to your house)
• Plastic barriers or Flashing to prevent moisture buildup

Don't forget to account for additional materials like concrete screws for attaching ledger boards to your house, hidden fasteners for composite or Cedar decking, and post-to-post connectors for railing assembly.

Building a 12x20 floating deck is an exciting project that adds value and functionality to your home. By using the right materials and following best practices, you can create a durable, visually appealing outdoor space for years of enjoyment. Happy building!