Polyurethane Decorative Carved Door and Window Pediment
Technical Specifications
| Material | Polyurethane |
|---|---|
| Surface | Relief-worked, acanthus leaf and classic carved detail |
| 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 | 101 × 846 × 285 mm |
| Weight | 0.72 kg |
| Sales Unit | piece |
Details
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Technical drawing: Download DWG (221 KB)
Similar Products(Architectural Pediments and Crowns)
The P2834 is a high-density architectural pediment designed to crown doorways, window frames, and prominent wall features with classical structural weight. This decorative element serves as an excellent architectural cap, delivering clean definition and historic depth to both interior and exterior elevations. Crafted for premium residential and commercial applications, it provides an efficient way to elevate standard portals into grand, architecturally significant entryways.
Engineered from rigid polyurethane with a density of 150-220 kg/m³, this pediment matches the hardness and structural feel of traditional timber while remaining remarkably lightweight. With a width of 846 mm, a height of 285 mm, and a bold projection depth of 101 mm, it offers a robust three-dimensional presence. Its closed-cell composition ensures less than 1% water absorption, rendering it resistant to moisture, rot, and swelling. It remains dimensionally stable across a wide temperature range from -20 °C / +70 °C, ensuring no warping or splitting over time.
Visually, the P2834 features a deeply carved, symmetrical baroque design centered around a prominent scallop shell motif. From this central shell, lush acanthus leaf scrolls and elegant volutes sweep outward, terminating in delicate foliate tips. The 101 mm depth creates sharp, dramatic shadow lines that emphasize the high-relief carving, making the ornament highly visible and impactful even from a distance or under varied lighting conditions.
This architectural pediment is highly versatile in its application. It is ideal for positioning directly above interior double doors, main entry gates, large window arches, or classical fireplace mantels. It can also be integrated into high-end custom cabinetry, library shelving tops, or used as a striking crown for large wall mirrors. In exterior settings, it serves as a stately decorative lintel for luxury villa facades, porticos, and hotel lobby entrances.
Unlike heavy plaster ornaments that are prone to cracking, or wood elements that decay under moisture, this polyurethane alternative is easy to handle and install. The installation process requires cleaning the mounting surface, applying polyurethane (PU) mounting adhesive to the back, and securing the piece mechanically with screws. Joints and screw heads should be filled, sanded with 180-220 grit sandpaper, and painted. The product is delivered with a factory-applied primer coat that prepares the surface; however, because paint manufacturers do not guarantee adhesion without their own base coats, applying an additional primer is optional and remains at the client's discretion.
Ultimately, the P2834 offers an enduring decorative solution that combines the aesthetic richness of historical stone carving with the physical resilience of modern polymer technology. When coated with a UV-resistant finish for outdoor use, it retains its sharp details and crisp white finish for decades with virtually zero maintenance.
- This polyurethane pediment is specifically designed to function as an overdoor or overwindow crown, but its application extends to various creative interior and exterior architectural details
- Inside the home, it can be mounted above single or double doors in living rooms, dining halls, and master suites to establish a sense of grand scale
- It works beautifully when integrated into classical library shelving, capping bespoke wardrobes, or crowning majestic fireplace surrounds
- In commercial spaces like luxury hotels, fine dining restaurants, or corporate offices, it adds a polished, historical touch above reception desks or elevator portals
- For exterior applications, it is perfect for highlighting main entrance doors, framing second-story windows, or accenting the pediment of a classical portico
- When used outdoors, applying a UV-resistant paint is mandatory to protect the material from sunlight degradation
- Ensure the installation surface is clean, dry, and free of dust or grease
- Apply a generous bead of polyurethane (PU) mounting adhesive to the flat rear mounting surface of the pediment
- Press the piece firmly against the wall or door frame
- Because of its 101 mm projection, mechanical fastening with screws is mandatory to support the weight during the curing process
- Once the adhesive is dry, fill all screw holes and any gaps along the edges using a high-quality acrylic or exterior-grade putty
- After the putty cures, sand the filled areas smooth with 180-220 grit sandpaper
- The pediment comes factory-primed, which prepares the surface for painting
- However, paint manufacturers generally require their own primers for warranty coverage; therefore, applying an additional primer is optional and up to the installer
- Finish by applying two coats of high-quality paint
- For outdoor installations, a UV-resistant topcoat is mandatory
- Maintaining the polyurethane pediment is simple and requires minimal effort
- For interior installations, occasional dusting with a soft, dry cloth or a feather duster is sufficient to keep the deep relief carvings clean
- If necessary, a damp cloth with mild soap can be used to wipe down the surface; avoid harsh chemical solvents, abrasive pads, or strong detergents that could damage the paint finish
- For exterior applications, the pediment can be gently washed down with a low-pressure garden hose to remove outdoor dust and pollen
- It is recommended to perform an annual visual inspection of the paint coat on outdoor units to ensure the UV-protective paint layer remains intact and free of cracks
Can this polyurethane pediment be used on exterior facades?
Yes, this pediment is highly suitable for exterior use. Its rigid polyurethane structure has a closed-cell design with less than 1% water absorption, meaning it will not rot, warp, or crack when exposed to rain, snow, or frost. Its dimensional stability has been tested between -20 °C and +70 °C. However, for outdoor installations, applying a high-quality, UV-resistant paint is mandatory to protect the material from yellowing under direct sunlight.
What type of adhesive should be used for installing the P2834?
For a secure and permanent installation, you must use a dedicated polyurethane (PU) mounting adhesive. Standard silicone adhesives must not be used, as they do not provide the necessary structural bond for this material. Additionally, because of the product's 101 mm depth and weight, mechanical fastening with screws is mandatory alongside the adhesive.
How does polyurethane compare to traditional plaster or wood pediments?
Polyurethane offers significant advantages over both materials. Compared to plaster, it is lightweight, impact-resistant, shatterproof, and much easier to install without specialized structural reinforcement. Compared to wood, it does not rot, warp, split, or attract boring insects, making it far more durable in humid or outdoor environments while maintaining a similar solid hardness of 150-220 kg/m³.
Do I need to apply a primer before painting the pediment?
The pediment is delivered with a factory-applied primer that prepares the surface for paint adhesion. However, because paint manufacturers typically do not guarantee their coatings unless their own specific primers are used, applying an additional primer is optional and left to the customer's discretion. Please note that Polure does not provide warranties for applied paints.
Is the P2834 pediment suitable for standard single-door frames?
Yes. With a total width of 846 mm (approx. 84.6 cm), it fits beautifully over standard single-door frames, which typically measure around 80 to 90 cm in width. Its classical scallop shell and acanthus leaf design adds a balanced, symmetrical crowning effect that instantly elevates standard door dimensions.