There are many advantages to choosing LED strips to decorate the ceilings. But how to install LED strip lights on ceiling?
Table of Contents
Firstly, LED strips can help to create an atmosphere that is compatible with the environment. Secondly, the cost of the LED strip is relatively lower than other kinds of lights such as. Besides, LED strips are flexible and straightforward, which makes it easy for users to install them by themselves.
Many differences need to be noticed on various occasions of installation. This article will introduce three main occasions that are mostly common in life.
1. How to Install LED Strip Lights on Ceiling Without Crown Molding
This is the first method of the LED strip installation. It will be introduced in four parts, which are necessary tools, installation process, useful tips and extension about creating a floating light effect.
Tools
- Bluetooth-supportive LED strip lights are recommended, which allows people to control the strips via a smartphone app and adjust colors, brightness and lighting modes easily.
- A pair of sharp scissors designed would be necessary.
- A damp cloth or alcohol – soaked cotton pad should be prepared to help remove dust, grease and other contaminants from the ceiling surface.
- A measuring tape is important for accurate measurements.
- Adhesive promoter is also optional. It can significantly improves the adhesion of the strip lights, especially on rough or porous surfaces.
Installation
1. Measure the size
- Determine the perimeter: Measure the total length of the four sides of the ceiling. For example, in a rectangular room with length L = 5 meters and width W = 4 meters, the perimeter P = 2 (L + W)=18 meters. Besides, it’s wise to add an additional 10% length for backup.
- Locate the power source: Identify a convenient location for the power adapter. The best position should be near the electrical outlet, which reduces the length of the power cord and minimizes the risk of tripping hazards.
- Hide the wiring: It is reasonable to install the strip lights along the inner edge of the ceiling, which is approximately 5 – 10 centimeters away from the wall.
2. Clean the Surface
Thoroughly wipe the edge of the ceiling with a damp cloth or alcohol – soaked cotton pad. This step is crucial since even a small amount of dust or grease will prevent the adhesive from bonding tightly. Besides, moisture will weaken the adhesive, so please wait until the surface is totally dry.
3. Test the Strip Lights
Before installation, power the strip lights and use the remote control or smartphone app to test if all colors and lighting modes are available. What’s more, inspect the entire roll of the strip to check if there is any damaged segments.
4. Install the Strip Lights
- Fix the starting point: Peel off approximately 20 centimeters of the 3M adhesive backing and carefully align the strip light with the ceiling edge. Please start from near the power source. After that, press the strip firmly to ensure a secure bond. We suggest pausing every 30 centimeters to prevent the strip from sagging.
- Deal with the corners:
- Simple folding method: Leave a 5 – centimeter length of strip at the corner and gently fold it into a right – angle. Please avoid excessive bending, which will damage the internal circuitry and cause the malfunction.
- Professional approach: Use a right – angle connector (which needs to be purchased separately). Trim the strip according to the cutting marks and insert it into the connector to reach a seamless transition.
- Conceal the power wire: Use transparent cable clips or a cable management track to fix the power wire to the wall This not only keeps the appearance tidy but also reduces the risk of accidents.
5. Trim Extra Strip Lights
If the strip is too long, cut it at the marked points (which is identified by a scissor icon). Use sharp scissors for a clean cut, otherwise, the ragged edges can cause short – circuits.
6. Bluetooth Connection and Adjustment
Download the specific app (e.g., Luminea, Govee) and connect your smartphone with the strip lights via Bluetooth. You can choose a gradual color-changing mode for a relaxing evening or schedule different brightness in different times of the day. Activate music – syncing modes for parties is also available.
If you are interested in Govee led lights, please check the related blogs below
Below is the video which shows how to install the LED strip without crown molding in detail.
Tips
- Prevent detachment: If the surface of the wall is uneven, reinforce the strip by NANO tape or strip light clips.
- Enhance the atmosphere: Install the LED strip diffuser (which is available online for a few dollars per meter) to create a more even glow. This is especially useful in bedrooms and living rooms where a softand relaxing atmosphere is desired.
- Prioritize the safety: Keep the strip lights away from flammable materials like curtains and paper. Unplug the lights when they are not in use to reduce the risk of fire.
How to Create a “Floating” Light Effect
Hide strip lights in the small gap between the ceiling and the wall and you will get a “floating” ceiling.
Measure the Gap Depth:
- If the gap is ≤5mm, choose a ultra – thin aluminum channel (3 – 4mm thick) and insert it into the gap. Attach the strip lights to the inside
- If there’s a wider gap or no gap at all, install an L – shaped PVC channel. Put the channel close to the ceiling edge and extend down 1 – 2 centimeters to create an artificial gap.
Position the Strip Lights:
- The distance between LED strip lights and the wall should be at least 2 – 3 centimeters to avoid light spots.
- Tilt the strip lights 30° upward and take use of the inner side of the aluminum channel to reflect light to get a better
Diffuse the light:
- An aluminum channel with a frosted cover is recommended (e.g., DotStone brand) to reduce the granularity of the light.
- As a DIY alternative, apply frosted PVC film whoselight transmittance rate is over 80% to the strip lights.
Test the Brightness
Use an lux measuring instrument to measure the brightness at a height of 1 meter below the ceiling. The ideal brightness is 150 – 200 lux, which can guarantee a comfortable atmosphere.
Tips
Please clean the surface of the wall by using alcohol, otherwise the led strip will get loose easily.
2. How to Install LED Strip Lights on Ceiling Corners
Tools
- Flexible strip lights. (IP65 waterproof strips are recommended).
- Corner connectors to join the strips at corners.
- A hot – melt glue gun to secure the connections.
Installation
- Measure the angle of the corner. This is crucial step to ensure a perfect fit of the strip lights.
- Bend the strip lights in advance or cut them into segments as needed. Be careful not to over bend the lights, which will damage the internal circuitry.
- Use L – shaped connectors to join the strips at the corner. Insert the strips into the connectors and connect them by hot – melt glue.
- Seal the joints with hot – melt glue to protect the strips from moisture and dust.
Note: The bending radius of flexible strip lights should be more than 3cm to avoid the circuitry damage.
For more information about how to install led strips around corner, please check the blog: How To Install LED Strip Around Corners
Below is the table which compares different corner connectors and their corresponding applications.
| Corner Type | Compatible Strip Model | Key Parameters | Installation Tips | Applicable Scenarios | Easily Overlooked Details |
|---|---|---|---|---|---|
| Straight (90°) | 5050 RGB | - Size: 5.0x5.0mm - Brightness: 1400lm/m - Waterproof: IP65 |
Use L-shaped connectors or solder after cutting | Indoor cabinets, Ceiling edges | Leave 1-2cm margin to avoid tension |
| Arc (Curved) | Flexible COB | - Width: 10mm - Brightness: 1200lm/m - Waterproof: IP20 |
Apply directly along curve without connectors | Round furniture, Curved ceilings | Avoid repeated bending at same position |
| Acute (<90°) | 2835 High Density | - Size: 2.8x3.5mm - Brightness: 1600lm/m - Waterproof: IP65 |
Cut segments and install with heat sink channel | Stair handrails, Decorative trims | Requires aluminum heat sink channel |
| Compound Corner | RGBW Tunable | - Width: 8-10mm (with sleeve) - Brightness: 1400lm/m - Waterproof: IP67 |
Use custom corner slots for fixation | Commercial spaces, Stage backdrops | Requires transformer power redundancy |
3. How to Install LED Strip Lights on Ceiling with Crown Molding
Tools
- LED strip lights. The length of the strips should be 15% longer than the circumference of the ceiling.
- Crown molding that matches the length of the LED strip lights. Choose a style that complements the overall decor of the room.
- Two pieces of wooden strips to support the strips. Cut the wooden strips at the same angle as the crown molding (usually 42° or 45°). This will provide a stable base for the crown molding and the strip lights.
- A miter saw for precise cutting.
- A nail gun and an electric drill for installation.
- A dimmer switch to adjust the brightness.
- A power outlet box.
- Cork filler strips and sealant.
- A measuring tape, a spirit level and a stud finder.
Installation
1. Measure the Length and Prepare Materials
- Calculate perimeter of the room: Measure the length along the ceiling edge to determine the required length of the crown molding. For example, in a square room with a side length of 4 meters, the perimeter will be 16 meters. Add extra 15% for backup and the total length should be around 18.4 meters.
- Purchase LED strip lights: Select connectable LED strip lights with alternative colors. Ensure the length of the strip does not exceed the maximum connection length specified by the manufacturer.
2. Install the Backer Wooden Strips
- Cut the backer strips: Use a miter saw to cut the 2 pieces of wooden strips at the same angle as the crown molding (42° or 45°). These strips will serve as a hidden support structure for the strip lights.
- Mark the installation location: Assemble a short section of the crown molding and support strip. After testing the lighting effect, determine the optimal distance between the backer strip and the ceiling (usually a few inches). Mark the installation line along the wall with the help of a spirit level.
- Fix the backer strips: Use a stud finder to locate the wall studs. Fix the backer strip to the studs along the marked line by using a nail gun. Leave a few inches of space at the corners for adjustments.
3. Electric Circuit Installation
Install the power outlet:
- Turn off the main power supply. Cut an outlet hole on the backer strip at the position close to a stud.
- Connect wires from an existing ceiling circuit (such as a chandelier or fan) to the new outlet location. Connect the live wire and neutral wire to the outlet terminals.
- Fix the outlet box and install the cover plate. Test the outlet to ensure it works before the installation.
4. Install Crown Molding
- Cut the crown molding:
- Inner corner treatment: Place the crown molding upside-down and backwards on the miter saw. Cut the inner corner of the crown molding at the same angle as the backer strip. The cut direction is towards the main body of the molding.
- Outer corner treatment: Cut in a direction away from the main body of the molding.
- Fix the crown molding: Attach the crown molding to the backer strips by using a nail gun. Be sure the crown molding is parallel to the wall. Seal the joints at the inner corners with cork filler strips to prevent the leakage of light.
5. Lay Out the LED Strip
- Hide the strip lights: Insert the LED strip lights into the groove behind the crown molding. Connect the strips continuously along the room. Please take care not to exceed the maximum length.
- Connect the dimmer switch: Connect the power cable of the strip lights to the dimmer switch and fix it within easy reach.
6. Final Testing
- Seal the gaps: Fill the gaps between the crown molding, wall and ceiling by using a sealant to prevent light leakage.
- Test the lighting effect: Turn on the power and adjust the brightness via the dimmer switch to achieve the desired ambiance.
Precautions
- Safety first: Always turn off the power before working on electrical installations. Hiring a licensed electrician for high – risk tasks is highly suggested.
- Heat dissipation: Ensure there’s enough space around the LED strip lights for heat dissipation to prevent overheating, which will reduce the lifespan of the lights and pose a fire hazard.
- Crown molding style: Multi – layer crown molding designs can enrich the lighting effect. Select a style which complements the overall decor of the room.
After all the steps above, you will create a soft and elegant lighting effect for rooms with the help of LED strips and crown molding.
If you need more detailed information on the usage of tools such as the Miter saw, we suggest you learning from videos of professional carpenter.
Note: Please test the color of LED strips in advance! Warm white is more suitable to be hidden behind the crown molding.
Product Recommendation: Ultra-thin LED strip suitable for narrow slot installation
90% DIYers Forget These!
- Power calculation: Match the length of the strip lights with the transformer. Using a transformer with insufficient power will lead to malfunction or dim light.
- Remote control: Choose the location of the remote control carefully to avoid signal interference. Rooms with metal ceilings will reflect and absorb the signal, reducing the effectiveness of the remote control.
Final Words
All in all, installing LED strip lights on the ceiling is a rewarding DIY project that significantly enhances the ambiance and aesthetics of rooms. By following these three methods and taking the necessary precautions, I believe you are capable of creating a beautiful and functional lighting design that meets your needs and preferences.