Uploaded March 2025 | Updated September 2026, 1 hour ago
Transform your retaining wall into a stunning water feature with a professionally installed spillway. This complete DIY guide shows you how to build a 24-inch spillway feature using the Atlantic-Oase spillway basin kit—from excavation and wall construction to plumbing and final installation.In this video, we demonstrate the complete process of integrating a spillway water feature into a Chateau Wall system. You'll learn proper layout dimensions, how to set level base courses for the basin, the critical plumbing gap placement, flexible liner installation techniques, and how to stack walls around the spillway without wrinkles or leaks. Whether you're adding a water feature to an existing wall or building a new installation, this tutorial covers every step to create a beautiful, functional spillway that brings soothing water sounds to your outdoor space.
You'll learn how to:
- Layout and excavate for a 6-foot by 4-foot spillway installation
- Build level base courses to accommodate the 24" x 48" flexible liner
- Stack walls with proper running bond pattern and minimal adhesive
- Create precise plumbing gaps at the correct distance from corners
- Install flexible liner without wrinkles for a professional finish
- Fit bulkhead fittings and pump following manufacturer specifications
- Fill the basin gradually while working out liner wrinkles
- Apply adhesive correctly around liner holes for maximum strength
- Stack walls to desired height while centering the spillway
- Complete plumbing connections for reliable water flow
We emphasize the importance of filling the basin before completing upper courses—this allows you to work out wrinkles and ensure tight liner placement. You'll also learn why the Atlantic-Oase 24-inch spillway fits perfectly with standard Chateau Wall blocks without requiring cuts, making installation straightforward for DIY homeowners.
Ready to add the soothing sound of water to your landscape? Visit westerninterlock.com to explore our complete line of retaining wall blocks perfect for water features, or subscribe for more professional hardscape installation guides.
Materials Used:
Atlantic-Oase 24” Spillway Kit
Chateau 400 and Chateau 300 wall blocks
SureBond 20 flexible adhesive
… … … … …
0:00 Intro
0:20 Layout & Base
0:51 Base Course
1:43 Subsequent Courses
3:18 Liner
3:55 Initial Plumbing Fittings
4:37 Filling the Liner
5:08 Additional Courses
5:57 Complete Plumbing
6:47 Outro
… … … … …
At Western Interlock, we are dedicated to inspiring and empowering DIY enthusiasts. Our paving stones and retaining wall blocks, combined with our comprehensive guides, tutorials, and tips, help you create stunning outdoor spaces. Whether you're working on patios, driveways, garden walls, or walkways, we provide the materials and knowledge to help you achieve professional-quality results on your own.
Subscribe to our channel for more DIY hardscape tutorials: @WesternInterlock
Visit our website for more products and inspiration: westerninterlock.com
Transform your retaining wall into a stunning water feature with a professionally installed spillway. This complete DIY guide shows you how to build a 24-inch spillway feature using the Atlantic-Oase spillway basin kit—from excavation and wall construction to plumbing and final installation.In this video, we demonstrate the complete process of integrating a spillway water feature into a Chateau Wall system. You'll learn proper layout dimensions, how to set level base courses for the basin, the critical plumbing gap placement, flexible liner installation techniques, and how to stack walls around the spillway without wrinkles or leaks. Whether you're adding a water feature to an existing wall or building a new installation, this tutorial covers every step to create a beautiful, functional spillway that brings soothing water sounds to your outdoor space.
You'll learn how to:
- Layout and excavate for a 6-foot by 4-foot spillway installation
- Build level base courses to accommodate the 24" x 48" flexible liner
- Stack walls with proper running bond pattern and minimal adhesive
- Create precise plumbing gaps at the correct distance from corners
- Install flexible liner without wrinkles for a professional finish
- Fit bulkhead fittings and pump following manufacturer specifications
- Fill the basin gradually while working out liner wrinkles
- Apply adhesive correctly around liner holes for maximum strength
- Stack walls to desired height while centering the spillway
- Complete plumbing connections for reliable water flow
We emphasize the importance of filling the basin before completing upper courses—this allows you to work out wrinkles and ensure tight liner placement. You'll also learn why the Atlantic-Oase 24-inch spillway fits perfectly with standard Chateau Wall blocks without requiring cuts, making installation straightforward for DIY homeowners.
Ready to add the soothing sound of water to your landscape? Visit westerninterlock.com to explore our complete line of retaining wall blocks perfect for water features, or subscribe for more professional hardscape installation guides.
Materials Used:
Atlantic-Oase 24” Spillway Kit
Chateau 400 and Chateau 300 wall blocks
SureBond 20 flexible adhesive
… … … … …
0:00 Intro
0:20 Layout & Base
0:51 Base Course
1:43 Subsequent Courses
3:18 Liner
3:55 Initial Plumbing Fittings
4:37 Filling the Liner
5:08 Additional Courses
5:57 Complete Plumbing
6:47 Outro
… … … … …
At Western Interlock, we are dedicated to inspiring and empowering DIY enthusiasts. Our paving stones and retaining wall blocks, combined with our comprehensive guides, tutorials, and tips, help you create stunning outdoor spaces. Whether you're working on patios, driveways, garden walls, or walkways, we provide the materials and knowledge to help you achieve professional-quality results on your own.
Subscribe to our channel for more DIY hardscape tutorials: @WesternInterlock
Visit our website for more products and inspiration: westerninterlock.com
