Construct the Perfect Floating Deck on Bumpy Terrain in 9 Simple Steps

For homeowners with uneven or sloping yards, building a traditional attached deck can be challenging. But with some planning and the right techniques, a floating deck allows you to create a gorgeous outdoor living space no matter the terrain. By essentially disconnecting from the house and "floating" above the earth on blocks or piers, bumps and dips in the yard can easily be accommodated. We'll walk through the 9 key steps to construct your dream floating deck over less-than-ideal ground.

With smart design choices and rugged building materials made for uneven sites, you can have a safe, solid floating deck perfect for entertaining and outdoor fun even on bumpy earth. Follow this guide to level out your yard and open up new backyard possibilities.

Step 1: Choose the Location

When planning a floating deck location, consider these key factors:

• Sunlight and views
• Wind exposure
• Drainage patterns
• Accessibility from house
• Local building codes

Pick a spot with maximum sunlight to enjoy the deck longer. Think about prevailing winds so you can add screening if needed. Check drainage flows across the site after heavy rain to avoid flooding issues underneath. Ensure easy access to/from indoor living spaces via potential stair or walkway connections. Research local regulations for deck construction.

Step 2: Determine the Size and Layout

Measure the build area to conceptualize potential shapes and orientations. Sketch a few different deck size and shape options based on family needs and backyard dimensions. Finalize the ideal footprint, accounting for existing trees or landscaping to preserve. Careful planning of the layout ahead of time will ensure you construct the optimum floating deck.

Consider the Planned Uses

Think about your family's needs for space, seating, play areas etc. Decide if you'll host larger groups or mainly need a cozy lounge zone. This helps tailor the proportions. Also factor where you may add stairs, planters, and other features later to complete your floating deck oasis.

Maximize Remaining Yard Space

Find the deck sweet spot that capitalizes on level yard patches while opening up new zones in bumpy areas. Use string or spray paint when laying out the deck to visualize how it will interface with the rest of the property.

Step 3: Clear and Level the Ground

Now that deck plans are set, you're ready to prep the site. Remove turf or plants via sod cutter or shovel. Scout high and low points using a screed board and level. Fill in dips or hollows with compactible gravel. Dig out humps and ridges. Tamp down freshly disturbed soil to prevent settling later.

Leveling the earth under a floating deck is simpler than traditional builds since the deck itself will be detached and elevated on solid supports. But stabilizing the ground still provides a sound framing foundation.

Account for Drainage

Always enable adequate runoff flow under your floating deck. Use crushed stone to backfill under low areas instead of clay-heavy soil. And consider sloping the plot slightly to encourage water diversion away from the house.

Step 4: Install Deck Blocks

Deck blocks provide adjustable height columns on which the deck rests. Set the first course of blocks around the perimeter and at interior support points as needed. Use landscape string lines to ensure block alignment, and verify tops will be level across the whole layout. Leave small gaps between blocks to facilitate drainage below the finished deck.

Types of Deck Blocks

Composite, concrete and galvanized steel blocks are common options. Select style and verify load capacity will match planned deck size, potential additions like roof covers, and occupancy uses.

Secure Stable Footings

It's smart to embed deck blocks or piers well below frost lines to prevent shifting. Anchoring initial courses of adjustable blocks in compacted gravel also resists settling. Check manufacturer guidelines for ideal footing specifications in your climate.

Step 5: Set Support Posts

Insert posts into integrated block notches or secure to stand-alone piers. Verify posts stand perfectly plumb with levels, and adjust pier height until properly oriented. Temporary bracing helps keep posts steady if needed while aligning deck support network.

Consider Post Anchoring

For maximum stability, anchor deck posts by boring down inside and securing the bottom with concrete backfill or special metal brackets. This optional extra step combats lifting forces from freezing ground or very uneven terrain under the floating structure.

Step 6: Install Beams

Connect a ledger board to house if attaching (non-floating), or start securing horizontal support beams to posts otherwise. Use properly-sized beams and specialized connectors to tie the pieces securely together. For floating decks, allow beams to simply span across rather than notching for a cleaner look.

Pick Beam Materials

Pressure-treated lumber is common for deck beams, but steel or higher-grade composites also work well. Ensure capacity suits predicted occupancy and potential additions like overhead sun shades or plant trellises later on.

Step 7: Add Joists

Construct the floor framing skeleton by fastening joists to beams with more metal ties or ledger strips. Space joists per code for rigidity. Blocking set between also helps minimize bounce. Make sure joists run the most efficient direction based on planned decking board orientation.

Maximize Strength

Using thicker joists on 12-16" centers or closer spacing between thinner boards enhances strength for a floating deck's shifted weight. Speak to local building experts for structural performance guidance given soils and loads in your climate if unsure.

Step 8: Put Down Decking

It's starting to look like a real deck now! Choose decking to suit personal style, price and performance needs. Grooved composite boards offer excellent durability and drainage passageways. Exotic hardwoods provide unbeatable beauty. And softwoods like cedar are a budget-friendly option.

Allow Proper Spacing

Make sure to gap decking slightly front-to-back for water flow through and side-to-side to enable expansion/contraction in fluctuating weather. Use hidden fastener systems between decking and joists for a clean look. Follow all manufacturer spacing and fastening specifications for optimal results.

Step 9: Complete the Deck

You did it! With the structural work complete, it's time for railings, stairs and final touches. Open up access points with graceful stairs or sleek ramps. Incorporate planters, benches or storage lockers. And finish safety features like railings to suit family needs and design style.

Don't be afraid to think outside the box when it comes to railings, plant integration and specialty lighting effects. The beauty of a floating deck is flexibility - make the most of it with personalized completion details!

Now relax and enjoy your custom-crafted floating deck sanctuary. No bumpy yard is match for smart planning, the right building methods, and a dash of creativity sprinkled in. We hope this guide gave you the confidence and know-how to construct the perfect floating deck oasis over less-than-level land. Get ready to host vibrant gatherings outdoors and expand your home's livable space, regardless of the terrain beneath!