How to Build a Floating Deck Over a Concrete Patio
Transforming your concrete patio into an elevated, stylish outdoor living space is an exciting home improvement project. Building a floating deck over your concrete surface is a relatively simple task that can be completed with a bit of planning and preparation. Here's a comprehensive guide to help you create a stunning floating deck that will enhance the aesthetic appeal and functionality of your outdoor area:
Materials You'll Need:
- Pressure-treated lumber for framing and joists (2x6 or 2x8)
- Decking boards (5/4 x 6 or 1x6)
- Concrete shims or leveling blocks
- Deck screws (2.5-inch and 3-inch)
- Plastic or metal joist hangers
- Plastic or rubber deck spacers
Steps to Build a Floating Deck Over Concrete:
1. Prepare the Concrete Surface:
Clean the concrete surface thoroughly to remove any dirt or debris. Check for any uneven areas or slopes and use concrete shims or leveling blocks to create a level base.
2. Layout the Framing:
Determine the size and shape of your floating deck and lay out the pressure-treated lumber for the framing. Secure the perimeter beams (outermost joists) to the concrete using deck screws.
3. Install the Joists:
Space the joists evenly across the framing, typically 12-16 inches apart. Use joist hangers to attach the joists to the perimeter beams. Double-up the joists where needed for added support.
4. Level the Joists:
Use a level to ensure that the joists are perfectly level. Adjust the concrete shims or leveling blocks beneath the joists as needed to achieve a flat surface.
5. Install the Decking Boards:
Start installing the decking boards from one corner, leaving a small gap (about 1/8 inch) between each board using deck spacers. Secure the decking boards to the joists with deck screws.
6. Trim and Finish:
Trim any excess decking boards and install any desired railings or stairs. Apply a sealant or finish to protect the deck from the elements and enhance its appearance.
Tips for Success:
- Use pressure-treated lumber rated for outdoor use to ensure durability.
- Pre-drill holes for deck screws to prevent splitting the wood.
- Leave sufficient gaps between decking boards for drainage.
- Check for level regularly throughout the construction process.
- Allow the deck to cure for a few days before applying sealant or finish.
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