Lighting under the pool coping is one of the most popular and visually impactful installations. In this guide we show you step by step how to perform the installation correctly.
What is Pool Coping?
Coping (also called edging or cantilever) is the perimeter edge of the pool, generally made of stone, ceramic, or concrete, that delimits the boundary between the water and the terrace. Installing LEDs under coping creates an elegant "floating" effect of the pool.
Required Tools
Drill
Diamond bit
Tape measure
Wrench
You will also need: neutral silicone resistant to water, stainless steel clamps, submersible electrical cable, waterproof junction box, and aluminum profile to protect the LED strip.
Step 1: Planning and Measuring
Perimeter Measurement
Precisely measure the total perimeter of the pool where you will install LEDs. Add an extra 10% for unions and waste. Also plan the location of:
- Electrical power supply points
- Junction box (accessible for maintenance)
- RGB/RGBW controller
- Power supply (outside the wet area)
Safety Precaution
All electrical installation must comply with the Low Voltage Electrotechnical Regulations. If you don't have experience with electrical installations, hire a professional electrician.
Step 2: Channel Preparation
Channel Cutting
With the help of a professional (pool builder or mason), make a channel of approximately 15-20mm deep under the coping edge. The width must be sufficient to accommodate:
- The LED strip with its protection profile
- The power cable
- A small margin for silicone sealing
Step 3: Profile and LED Strip Installation
Aluminum Profile Placement
The aluminum profile serves three essential functions:
- Thermal dissipation: LEDs generate heat that must be evacuated
- Mechanical protection: Protects the LED strip from impacts
- Light diffusion: Improves light distribution
Fix the profile with neutral silicone resistant to water. Make sure it is perfectly level for uniform light distribution.
Professional Tip
For a smoother, more continuous effect, use a corner profile (45°) that directs light toward the water at an angle, rather than the flat profile that directs light downward.
Step 4: Electrical Connection
Wiring and Connections
Electrical connection requires special attention:
- Use submersible 3 or 4-wire cable (depending on RGB or RGBW)
- All connections must be inside IP68 waterproof junction boxes
- Apply dielectric grease on connectors to prevent corrosion
- Verify polarity before sealing
- The power supply must be outside the wet area
Step 5: Sealing and Finishing
Final Finishes
Once functionality is verified:
- Apply transparent neutral silicone on all joints
- Seal the profile perimeter to prevent water infiltration
- Verify there are no gaps where water could enter
- Allow to dry completely before filling the pool
Test Before Sealing
Connect and test all colors and controller effects before permanent sealing. It's much easier to make adjustments without sealing.
Common Mistakes to Avoid
- Not using aluminum profile: LED strip overheats and fails prematurely
- Connections without waterproofing: Causes short circuits and electrocution risks
- Power supply inside the pool: Must always be outside the water
- LED strip without IP68: Will fail immediately on contact with water
- Joints without waterproof box: Joints are critical water entry points
Post-Installation Maintenance
To extend your installation's lifespan:
- Periodically visually inspect LEDs
- Verify silicone joint condition annually
- Maintain chlorine levels within recommended range
- Check electrical connections every 2-3 years
Prefer professional installation?
We can take care of the entire process, from planning to commissioning.
