The technology of ceiling finishing with a built-in aluminum LED profile requires special care to ensure that the light from the strip does not highlight even the slightest irregularities.

Main stages of applying putty:

1. Preparation and profile protection

• Installing a diffuser: Before starting dirty work, insert a plastic diffuser into the profile so that putty does not get inside the channel. If you don't have one, seal the cavity with painter's tape.

• Priming: Be sure to treat the edges of the drywall and the profile shelves with primer for better material adhesion.

2. Reinforcing joints

• Using mesh: Apply mesh tape or fiberglass mesh ("spider web") to the joint between the profile and the drywall sheet. This will prevent cracks from vibrations or thermal expansion of the metal.

• Filling seams: Using a narrow spatula, press the putty through the mesh as tightly as possible into the gap between the profile and the ceiling.

3. Putting the surface

• Layers: Apply a minimum of two layers: a starter (leveling) layer and a finishing layer (for perfect smoothness).

• Technique: Use a wide spatula, moving it along the profile. Press the tool firmly so that the layer is even and does not create "bumps". The thickness of the finishing layer should not exceed 2-3 mm.

• Sanding: After each layer is completely dry, the surface should be sanded with fine-grit sandpaper.

Important details:

• Light inspection: Since the LED strip provides directional side light, it will reveal any defects. It is recommended to check the evenness of the ceiling by shining a flashlight or spotlight at a sharp angle to the surface.

• Shrinkage: In new buildings, it is better to use polymer or acrylic putties — they are more elastic and less prone to cracking due to house settlement.