Shower niche lighting is a consistent upsell opportunity for bathroom remodels - but the wet environment requires specific precautions to pass inspection and avoid callbacks. Here's what you need to know to spec and install it correctly.
Due to the wet environment, key considerations include waterproofing, proper wire placement, and compliance with local electrical codes. Getting these details right during rough-in prevents problems after the tile is set.
Waterproofing
Waterproof strip lights are essential for shower niche installations. The entire setup needs to be thoroughly sealed to prevent water ingress. Use clear RTV silicone to seal all connections and ensure durability.
Pro tip: Crimp connectors and wire nuts fail in humid environments. Solder your connections and seal with clear RTV silicone plus heat shrink, it takes an extra few minutes but eliminates callbacks.
Placement
Install at the top of the shower niche, wire entry behind. This keeps the strip out of direct water contact and simplifies your rough-in, one less penetration point to waterproof. The point of entry for the strip light should be positioned behind the niche so it is not directly exposed to water, maintaining both safety and longevity.
For Schluter or Tile Redi shower systems, confirm compatibility before spec'ing. Verify that the lights will work with the membrane system during planning, not during installation.
Power Supply, Safety, and Code Compliance
Code Requirements
A GFCI outlet is required in most jurisdictions and is the first thing inspectors check. The power supply and any controllers or switches must be located remotely, in a dry area, plan wire routing from the niche to the controller location during rough-in.
Code note: Low voltage lighting falls under NEC Article 725. Always verify with your local AHJ (Authority Having Jurisdiction) - NEC editions vary by municipality. Some areas are still on 2020, others have adopted 2023. Your inspector has final say on what's compliant.
Class 2 Power Supply Advantages
We recommend constraining your system to Class 2, meaning the power supply does not exceed 96 watts of output (at 24V DC). Beyond the safety benefits of reduced shock risk, Class 2 designation provides significant installation advantages under NEC Article 725.
Class 2 Benefits for Contractors:
- Open wire connections are permissible - no junction boxes required
- In most jurisdictions, homeowners don't need a permit for Class 2 circuits
- On commercial jobs, apprentices can handle Class 2 wiring - a real labor cost savings on multi-bathroom hospitality projects
- Simplified inspection requirements compared to Class 1 line voltage
Wiring Connections
Soldering the wire connections is best and will ensure they are secure and reliable. All connections need to be thoroughly sealed which can be accomplished with silicone and heat shrink tubing to prevent water intrusion.
Additionally, we advise incorporating a drip loop. A drip loop is a loop in the wire that directs any dripping water away from the electrical connections. Position the drip loop where it won't create moisture pockets that lead to mold - a common inspection flag and warranty issue.
Accessibility for Maintenance
When planning the installation, consider access for future maintenance. Ensure that the lights can be reached for repairs or adjustments without tile removal.
Pro tip: For hospitality or commercial projects, maintenance access is critical. Hotel engineers need to swap components without calling in a contractor. Plan access points during rough-in, not after tile.
LED Color Temperature
Adjusted Color Temperature for Waterproof Strip Lights:
- Soft White: 3500K
- Warm White: 3800K
- Cool White: 4900K
- Day White: 7000K
Pro tip: If you're matching existing 3000K vanity fixtures, spec the 3500K waterproof strip to compensate for the coating's cooling effect.
Recommended LED Strips for Shower Niche Lighting
All strips listed below run up to 16 feet on a single power feed without visible voltage drop. For longer runs or multi-niche installations, plan power injection points during rough-in - not after tile is set.
The types of strip light we would recommend for a shower niche, based on light color preference are:
- Single Color: Waterproof N-Series (Narrow) Flexible LED Strip Light - Ultra Bright
- RGB: Waterproof W-Series RGB Color Changing Flexible LED Strip Light
- RGBW: Waterproof W-Series RGBW 4-in-1 Color Changing Flexible LED Strip Light
- Tunable White: Waterproof W-Series Dynamic Variable White Color Tuning Flexible LED Strip Light
Dimming Options?
All of our strip lights are dimmable. For dimming single color LED strip lights using a standard, in-wall dimmer switch, you will need a dimmable power supply. If using color-changing strip lights, or tunable white strip lights, use a non-dimmable power supply along with a controller as all the dimming will be done through the control unit.
Smart Lighting Controls
Smart lighting control offers versatility to maximize both convenience and functionality.
App-Based Control
Our Casambi Bluetooth 4 Channel PWM Controller uses a mobile app that can be downloaded on phones and tablets. This type of control allows users to adjust light colors, dim the lights, configure presets, activate scenes, manage multiple zones, and utilize timer functions. The Casambi App can be used on multiple devices for shared control and is able to be paired with the Casambi Xpress Wireless Wall Controller. The Xpress is a wireless wall switch with buttons for dimming and 4 preset buttons that can be programmed in the app.
Smart Home Integration
For whole home integration, the Lutron Caseta ELV+ PD-5NE Smart Home Dimmer Switch paired with the Lutron Caseta Wireless Smart Bridge connect with smart home technology including Amazon Alexa, Apple HomeKit, Google Assistant, and more. The Lutron Caseta is only compatible with single color lights, it is not compatible with color changing, or tunable white lights.
DMX Control
Digital Multiplex (DMX) controllers are overkill for most bathroom applications. DMX is typically reserved for commercial environments requiring precise zone control and professional programming.
Pro tips to avoid callbacks:
- Don’t skip the drip loop. Mold from improper drainage voids warranties.
- Solder and seal all connections.
- Verify GFCI protection before finishing the job. It’s the first thing inspectors check.
- Confirm system compatibility with shower membrane systems (Schluter, Tile Redi) during planning, not installation.
Join the aspectPRO Program
If you're regularly spec'ing LED lighting for bathroom remodels or commercial projects, our Pro Program is built for the way you work.
Pro members get:
- Trade pricing on the products you use most
- Consistent stock and dependable fulfillment - no project delays
- Spec sheets and documentation formatted for bids and submittals
- A supplier partnership built around repeat jobs, not one-off sales
