Polyurethane Indirect Lighting Profile for Modern Ceilings
Technical Specifications
| Material | Polyurethane |
|---|---|
| Surface | Flat, smooth |
| Color | White |
| Density | 150-220 kg/m³ |
| Water Absorption | below 1% |
| Dimensional Stability Test | -20 °C / +70 °C |
| Fire Class | B2 (DIN 4102-1) |
| Paintable | Yes |
| Usage | Indoor + Outdoor |
| Water Resistant | Yes |
| Dimensions | 97 × 2400 × 200 mm |
| Weight | 3.15 kg |
| Sales Unit | piece |
Details
Support
Technical drawing: Download DWG (115 KB)
Similar Products(Cove Lighting Profiles and Fixtures)
The P81378A is a high-performance architectural moulding engineered to integrate indirect LED illumination into contemporary ceilings. By concealing the light source, this profile allows for a soft, glare-free ambient glow that enhances the perceived height and volume of any room. It serves as a seamless bridge between wall and ceiling, eliminating harsh shadows and delivering uniform light distribution.
Manufactured with a density of 150-220 kg/m³, this rigid polymer profile offers exceptional structural integrity while remaining remarkably lightweight. With dimensions of 97 mm in width, 2400 mm in length, and a height of 200 mm, it is perfectly proportioned for medium to large-scale residential and commercial projects. Unlike fragile plaster or moisture-sensitive MDF, this material does not warp, crack, or decay over time, even in humid environments.
Visually, the profile features a clean, minimalist geometric design. Its sharp, multi-stepped L-shaped block structure is tailored specifically for modern interior trends. The integrated recessed channel is optimized to house LED strips securely, directing light upward and outward at an ideal angle. This functional geometry ensures that the lighting remains the focal point without any visible fixtures.
This versatile profile is highly suited for a variety of interior settings, including living rooms, master suites, corridors, and high-traffic commercial spaces like hotels and restaurants. Because of its outstanding moisture resistance, it can also be safely installed in wellness zones or semi-outdoor areas, provided it is finished with appropriate protective coatings.
Installation is straightforward and far cleaner than traditional plasterwork. The profiles are mitered at 45 degrees, secured using a polyurethane (PU) assembly adhesive, and mechanically reinforced with screws. The factory-applied primer prepares the surface for painting. However, because paint manufacturers do not guarantee adhesion on unprimed surfaces, applying an optional extra primer coat is recommended based on your chosen paint brand's guidelines.
Ultimately, the P81378A combines modern aesthetics with advanced material science to deliver an efficient lighting solution. It eliminates the labor-intensive sanding and drying times associated with plaster, allowing architects and installers to achieve clean lines and premium lighting effects with minimal effort.
- As an indirect lighting cornice, this profile is highly versatile for both interior and exterior applications
- Indoors, it is ideal for creating soft ambient lighting in living rooms, bedrooms, and long hallways where direct ceiling fixtures might feel too harsh
- It is also widely used in commercial spaces like hotel lobbies, luxury retail stores, and modern offices to define architectural boundaries
- For outdoor applications, such as under-eave lighting on villa facades or covered terrace ceilings, it provides a striking wash of light
- When used outdoors, finishing the profile with a high-quality UV-resistant paint is mandatory to prevent yellowing
- For the best visual results, position the LED strip deep within the integrated channel to avoid hot spots and ensure a completely smooth gradient of light across the ceiling surface
- To maximize the aesthetic impact, pair this profile with dimmable smart LED systems, allowing you to transition from bright task lighting to a relaxed evening glow
- Begin by ensuring the installation surface is clean, dry, and free of dust
- Measure and cut the profiles at a 45-degree angle using a fine-toothed saw for precise miter joints
- Apply a generous bead of polyurethane (PU) assembly adhesive along the mounting surfaces of the profile
- Press the profile firmly against the wall and ceiling, and secure it mechanically with screws to ensure stability while the adhesive cures
- Once cured, fill all joints and screw holes with a high-quality acrylic filler
- Lightly sand the joints using 180-220 grit sandpaper for a seamless finish
- The factory primer prepares the surface, but applying an optional extra primer is highly recommended to comply with your paint manufacturer's warranty before applying two coats of water-based paint
- Maintaining the pristine appearance of this rigid polymer profile is simple
- Regularly dust the interior channel where the LED strip rests to prevent dust buildup from dimming the light output
- For general cleaning, wipe the exterior surface with a soft, damp cloth
- Avoid using harsh abrasive chemicals or solvent-based cleaners, as they can damage the paint finish
- If installed in high-traffic or outdoor areas, inspect the joints periodically and apply a fresh coat of paint if necessary to maintain UV protection
Can this profile be installed in high-humidity areas like bathrooms?
Yes, the rigid polymer material has low water absorption (below 1%), making it highly resistant to moisture, rot, and swelling. It is an excellent choice for spa areas, bathrooms, and kitchens.
What type of adhesive should be used for mounting?
You must use a high-quality polyurethane (PU) assembly adhesive along with mechanical screws to secure the profile firmly to the wall and ceiling while the adhesive cures. Do not use standard silicone.
Does the profile require an extra coat of primer before painting?
The profile comes with a factory-applied primer that prepares the surface. However, since paint manufacturers do not guarantee paint adhesion without their own primer, applying an optional extra primer is recommended and is at the customer's discretion.
How does this profile compare to traditional gypsum or plaster cornices?
It is significantly lighter, shatterproof, and easier to install, reducing labor costs. Unlike plaster, it will not crack due to building settling or absorb moisture over time.
Can I use this lighting profile on an outdoor facade?
Yes, it is suitable for outdoor use, such as under roof eaves. However, you must coat it with a high-quality, UV-resistant exterior paint to protect the material from sun damage and yellowing.