Building an outdoor shower at your beach house or coastal property? Proper drainage is essential to prevent water pooling, erosion, and foundation issues. This Outdoor Shower Drainage Gravel Calculator helps homeowners, contractors, and DIY enthusiasts determine exactly how much crushed stone or drainage gravel you need for a functional, long-lasting shower sump.

Whether you're installing a simple rinse-off station after beach days or a full outdoor shower enclosure, this calculator takes the guesswork out of material ordering. Simply enter your shower base dimensions, desired sump depth, and stone specifications to get an accurate cubic yard or cubic foot estimate—plus recommendations on the right type of drainage stone for coastal environments.

Why proper drainage matters for outdoor showers: Outdoor showers, especially in sandy coastal areas, need excellent drainage to handle daily use without creating mud pits or drainage issues. A properly sized gravel sump allows water to percolate into the ground naturally while providing a stable, non-slip surface. Using the right amount of crushed stone (typically ¾" to 1½" clean stone) ensures efficient drainage and longevity.

Perfect for:

• Beach house owners planning DIY outdoor shower installations
• Contractors and landscapers estimating materials for coastal projects
• Property managers maintaining rental properties with outdoor amenities
• Home improvement enthusiasts upgrading existing outdoor showers

How Paperform makes this calculator smarter: This calculator uses Paperform's live calculation engine to instantly compute gravel volumes as you adjust dimensions. You can save your results, receive a detailed material list via email, and even connect the form to your preferred suppliers or project management tools using Stepper for automated material ordering workflows.

Get accurate drainage gravel estimates in seconds and build an outdoor shower that handles water properly for years to come.