Polyurethane Round Curved Arch Model
Technical Specifications
| Material | Polyurethane |
|---|---|
| Surface | Smooth, flat curved surface |
| 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 |
| Diameter | Ø 384 cm |
| Dimensions | 110 × 3840 × 1920 mm |
| Sales Unit | piece |
Details
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Technical drawing: Download DWG (142 KB)
Frequently Used Together
Similar Products(Round Arch Mouldings)
The decorative architectural element with model code P14D50D320VI is a specially designed curved arch for wide doorways and large window tops. Combining the rounded contours of classical architecture with modern manufacturing technology, this product softens sharp corner transitions on facades or interior spaces to create aesthetic harmony. Ideal for large-scale projects, this arch adds depth and a prestigious look to any space.
Boasting superior technical standards, this grand architectural element features a profile width of 110 mm, a span (width) of 3840 mm, and a height of 1920 mm. Manufactured from high-density rigid polyurethane (150-220 kg/m³), it offers the hardness of wood while remaining remarkably lightweight. Thanks to its closed-cell structure, its water absorption rate is below 1%, meaning it will not rot, swell, or warp even in damp environments. Dimensional stability has been tested within -20 °C / +70 °C, and it retains its shape for years.
Visually, the product features harmonious parallel steps along its smooth, flat curved surface. These minimalist lines create a play of light and shadow, adding depth to the arch. Delivered with a factory-applied primer, the surface ensures excellent adhesion for the final topcoat. However, since paint manufacturers do not guarantee applications without their own primers, applying an additional primer coat before painting is optional and entirely at the user's discretion.
With a wide range of applications, this curved molding element is perfect for diverse projects, from luxury villa facades to hotel lobbies, spacious living room transitions, and historic building restorations. For exterior applications, it must be painted with a UV-resistant exterior paint after installation to protect it from the damaging effects of sunlight. Unpainted raw products may yellow over time.
Compared to heavy, fragile plaster or high-maintenance wood alternatives, it is far more durable and practical. During installation, once the surface is cleaned, Polure Polfix adhesive should be applied to the back, and the product must be secured to the wall with mechanical screws. Silicone adhesives should not be used. After filling screw holes and joints with filler and sanding them smooth, the process is completed with two coats of paint.
- This wide curved arch is an excellent choice for creating portal transitions, especially in large-scale architectural projects
- Indoors, it is used to emphasize ceiling height in spacious living room transitions, hotel reception backdrops, interior partitions of luxury restaurants, and hallway passages
- On exteriors, it is preferred for framing large arched windows of mansions and villas, creating grand pediments over main entrance doors, or decorating veranda transitions
- Combined with classical columns and floor moldings, it achieves a cohesive neo-classical style on the facade
- The wall or facade surface must be completely free of dust, dirt, and moisture
- Align and mark the arch pieces on the installation area
- Apply Polure Polfix adhesive to the joint surfaces (silicone adhesives must absolutely not be used)
- Once positioned on the wall, secure the product mechanically with screws until the adhesive cures
- Fill screw heads and joints with an exterior-grade filler
- Once dry, sand smooth with 180-220 grit sandpaper
- Finally, after an optional extra coat of primer, apply two coats of water-based or synthetic paint
- With a water absorption rate below 1%, this moisture-resistant product is exceptionally easy to clean
- It can be wiped down with a damp cloth, a soft sponge, or mild soapy water without abrasive agents
- Avoid using thinners, acetone, strong acid-based chemicals, or stiff wire brushes that could damage the surface
- For outdoor applications, we recommend checking the paint every few years to maintain its vibrancy and ensure ongoing UV protection
Is it weather-resistant for exterior use?
Yes, the product has dimensional stability tested between -20 °C and +70 °C, and with a water absorption rate under 1%, it is suitable for areas with moisture, rain, or frost. However, when used outdoors, it must be painted with UV-resistant exterior paint to protect it from sun damage.
Which adhesive should be used for installation?
Polure Polfix adhesive, specially developed for installation, should be preferred. Silicone-based adhesives should not be used as they can flex over time. Additionally, mechanical screwing is required to ensure secure fastening.
What are its advantages over plaster arches?
Plaster materials are very heavy and fragile, carrying a high risk of cracking during installation. Include the product weight and fixing loads when assessing the substrate and supporting structure.
Is the product delivered painted, and is an extra primer needed?
The product is delivered with a factory-applied white primer, making the surface ready for painting. Since paint manufacturers do not guarantee finishes over third-party primers, applying an additional primer coat is entirely optional. It can be painted directly with water-based or synthetic paints.
Will this 3840 mm wide arch fit any wall?
With a span of 3840 mm and a height of 1920 mm, this model is designed for very wide transitions and large facade windows. Before purchasing, please ensure that the width and ceiling height of your installation area are compatible with these dimensions.