20x20 Floating Deck Plans

Embarking on a project to build a 20x20 floating deck can seem daunting, but with the right plans and steps, it can become a rewarding endeavor. A 20x20 floating deck, typically made of wooden or composite materials, can serve as an elegant addition to your home, providing an extra living space that overlooks your backyard's beauty. This comprehensive guide will walk you through the process, from planning to execution, ensuring you achieve a functional and aesthetically pleasing outcome.

Before you dive in, ensure you have a clear understanding of local building codes and regulations regarding deck construction, especially for floating decks. Also, assess your property'sunique terrain and consider hiring a professional if necessary. Now, let's jump into the plans and creation of your 20x20 floating deck.

Planning Your 20x20 Floating Deck

Planning is the backbone of a successful project. Here's what you should consider before you start building:

Firstly, decide on the deck's material. Pressure-treated wood, cedar, and composite materials are popular choices. Each has its advantages, so choose based on your needs, budget, and maintenance preferences.

Design and Layout

Sketch your dream deck, including any railings, stairs, or built-in features like planters or benches. For a 20x20 deck, consider a simple rectangular layout, or incorporate curves or angles for a more unique look.

Use graph paper or a deck design software to create a to-scale drawing, including dimensions and any cut-outs for doors or windows. This will help you visualize the space and plan your material needs.

Budget and Material Estimates

Once you have a design, estimate the materials needed. For a 20x20 deck, you'll need:

• Decking boards (around 70-80 2x6 pressure-treated lumber, 16' long)
• Joists (around 36 2x8 pressure-treated lumber, 12' long)
• Beams (around 6 2x8 pressure-treated lumber, 12' long)
• 4x4 posts (around 16 pieces)
• Ledger board (1 2x12 pressure-treated lumber, 12' long)
• Railings and balusters (if applicable)
• Hardware and fasteners

Composite materials will cost more but require less maintenance. Also, consider primed or pre-colored materials to save time on painting.

Preparation and Foundation

Before you begin construction, prepare your site and gather your tools:

Clear the site of debris and vegetation. Mark the deck's outline using stakes and string. Ensure your deck will be level, using a laser level if necessary.

Preparing the Ground and Foundation

For a floating deck, ensure the ground is level and well-draining. If necessary, build a gravel pad to support the deck and keep it off the ground. Use concrete pier blocks to elevate the deck slightly and keep it level.

To anchor the deck, install ledger board brackets along the wall, ensuring they are level and meet local building codes. Once anchored, your deck is ready for framing.

Framing the Deck

Start by laying out and attaching your ledger board, if applicable. Next, install your posts, ensuring they are level and square. Use ½" post-to-beam hangers to attach the beams securely.

Install the joists, spacing them evenly (around 16" on center) and attaching them with joist hangers to the beams. Ensure your joists are level and square for a stable base.

Building the Deck Surface

With the frame complete, it's time to create the surface of your 20x20 floating deck:

Attach apoyle joist brackets to the outer edges of your joists. This will hold your decking boards securely and give your deck a finished look.

Installing Decking Boards

Start in one corner, laying your first board and securing it with hidden decking screws. Ensure the board is level and matches the desired layout. Continue along one edge, staggering the seams between boards for greater strength and longevity.

Once the first row is complete, move perpendicularly, starting a new row and continuing across the deck. Ensure your seams are staggered and your decking boards are level throughout.

Adding Railings, Stairs, and Finishing Touches

If your design includes railings, now is the time to install them. Attach your bottom rail first, ensuring it's level and square. Install your balusters evenly spaced (around 4" on center).

If your deck requires stairs, build them now, paying close attention to the rise and run to meet building codes. Ensure your stairs are secure and well-supported.

Finally, apply a waterproofing sealant to protect your deck from moisture and weathering. Choose a stain or paint to complement your home's exterior, applying it evenly for a professional finish.

Building a 20x20 floating deck can seem like a massive undertaking, but with careful planning and execution, it can become a reality. Enjoy your new outdoor living space and the satisfaction that comes from a job well done.