How to Build a Deck Around a Round Pool: DIY Tips for Beginners

Leah Hughes
Sep 21
2 min read

Learning to build a deck around a round pool requires proper planning and the right approach. A trusted pool builder would recommend starting with careful measurements and quality materials. This guide covers all the steps you need to complete this project successfully. From measuring your pool to installing the final boards, each phase is important for good results. These techniques help homeowners create a beautiful and safe deck space.

Pool Measurement and Planning

Before starting your project to build a deck around a round pool, measure the pool's size carefully and plan your layout. Use a tape measure to find the exact diameter of your pool—Mark where the deck will go, leaving enough room for walking and sitting areas. Create a simple drawing to see how the finished deck will look. Good planning helps you avoid problems during construction and makes the building process smoother.

Selecting the Right Materials

Choose high-quality materials that will last for years around water and weather. Pressure-treated lumber works well for the frame and deck boards because it resists rot. Cedar and redwood are good options that look great and last long naturally. For railings, aluminum or composite materials need less care over time. Use stainless steel screws and hardware to prevent rust and keep your deck strong.

Building the Deck Foundation

Start by marking exactly where your deck will connect to the pool area. Use stakes and string to outline the deck shape, making sure everything is level. Dig holes for support posts around the marked area, going below the frost line in your region. Set the posts in concrete to create a solid base. Check that all posts are straight and level before the concrete hardens completely.

Constructing the Deck Frame

Place your lumber beams in a circle around the pool, spacing them evenly for good support. Connect the beams using joist hangers for a strong connection. Cut and install joists inside the frame, making sure they're straight and evenly spaced. Attach all pieces securely with the right hardware. Double-check your measurements and angles to keep everything square and stable throughout the building process.

Installing the Decking Boards

Pick good-quality deck boards that are made for outdoor use and fit your pool deck size. Here are the key steps for installation:

Start from the outer edge: Begin placing boards from the deck's outside edge and work toward the pool for a clean look.
Use proper spacing: Keep consistent gaps between boards to let water drain and prevent wood warping.
Secure boards properly: Use stainless steel screws to attach boards firmly to the frame for long-lasting strength.

These steps will help you build a sturdy and attractive deck around your pool.

Adding Finishing Touches and Maintenance

Add lighting, railings, and seating to make your deck both pretty and useful. Regular cleaning keeps your deck looking good and prevents dirt buildup. Check for damage or wear regularly and fix problems quickly. Treat the wood with protective coating to shield it from weather damage. With proper care and nice finishing touches, your round pool deck will stay beautiful and functional for years to come.

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