Polyurethane Window Jamb Ornament and Classic Keystone Model
Technical Specifications
| Material | Polyurethane |
|---|---|
| Surface | Patterned, embossed |
| 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 | 81 × 176 × 228 mm |
| Weight | 0.26 kg |
| Sales Unit | piece |
Details
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Technical drawing: Download DWG (216 KB)
Frequently Used Together
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The P9003B decorative facade element is an exclusive architectural ornament designed to serve as a keystone or crowning motif at the top center of window and door frames. Blending the exquisite details of classical architecture with modern manufacturing technology, this product enhances the visual appeal of structures in both interior and exterior designs. It offers a durable, long-lasting alternative to traditional materials like plaster or concrete, eliminating their heavy weight and fragile nature.
Measuring 81 mm in depth, 176 mm in width, and 228 mm in height, the product provides an ideal visual presence. Technically, it is manufactured from high-density rigid polyurethane (150-220 kg/m³). This density gives the ornament a durable, wood-like hardness while maintaining a lightweight form for easy installation. Thanks to its closed-cell structure, its water absorption rate is below 1%, ensuring superior dimensional stability against moisture, rain, and freeze-thaw cycles. With dimensional stability tested between -20 °C and +70 °C, it retains its shape and fine details even under harsh weather conditions.
A closer look at its visual design reveals symmetrically placed helical scrolls (volutes) at the upper corners. An embossed bead pattern running down the central vertical axis merges with a cascading acanthus leaf motif at the bottom, reflecting the classic characteristics of Baroque and Neoclassical styles. The sharp molding details beautifully capture light and shadow, creating a striking effect on any facade.
The P9003B model is shipped factory-primed with a protective white undercoat. This primer layer is applied to enhance the adhesion of the final topcoat. However, since paint manufacturers typically do not guarantee applications without their own primers, applying an additional primer coat before or after installation is entirely at the user's discretion. For outdoor applications, coating the material with UV-resistant paint is mandatory to prevent damage from sunlight.
- This decorative keystone and window jamb ornament offers a wide range of applications
- In exterior designs, it is positioned as an aesthetic focal point at the top center of window frames, the center of door arches, or at the intersections of molding lines
- Indoors, it is preferred to create a corbel look in classical living room designs, arched hallways, decorative fireplace surrounds, and ceiling cornice corners
- It is an excellent choice for crowning wall panel joints in villas, hotel lobbies, historical restorations, and prestigious office projects
- The installation surface must be dry, clean, and free of dust
- Apply Polure Polfix adhesive, which provides a strong bond, to the back of the product and place it in the designated position
- In addition to gluing, mechanical fastening with screws or nails is mandatory to secure the material safely
- Screw heads and joints should be filled with an exterior-grade filler; once dry, sand smooth with 180-220 grit sandpaper
- After an optional extra coat of primer, complete the installation by applying at least two coats of water-based or synthetic paint
- Assess water and moisture exposure using the product technical data, surface finish and installation details
- It can be easily cleaned with a damp cloth or by spraying low-pressure water on exterior facades
- Avoid using abrasive brushes, acidic cleaners, or strong solvent-based chemicals during cleaning
- For outdoor applications, it is recommended to inspect the painted surface every few years and repaint if necessary to extend the paint life and maintain UV protection
- In case of impact damage, it can be easily repaired with filler, sanded, and repainted
Will this window ornament deform or melt under outdoor weather conditions?
No, thanks to its high-density rigid structure, it has been tested to maintain its shape perfectly between -20 °C and +70 °C. With a water absorption rate under 1%, it is unaffected by rain, snow, and humidity, preventing rotting or cracking. However, it must be painted with UV-resistant paint to protect it from sunlight outdoors.
Which adhesive should I use for installation, and is mechanical fastening required?
Only Polure Polfix adhesive should be used during installation. Silicone-based adhesives do not provide a long-lasting bond. Additionally, for safety and durability, mechanical fastening with screws is mandatory in addition to the adhesive.
Does the product come pre-painted, and can it be painted directly after installation?
The product is delivered with a factory-applied protective white primer, making the surface ready for painting. However, due to paint manufacturers' warranty terms, applying an additional primer coat is optional and left to the customer's choice. It should be finished with water-based or synthetic paints after installation.
What advantages does it offer compared to plaster or wood ornaments?
Include the product weight and fixing loads when assessing the substrate and supporting structure. Unlike wood, it performs well in humid conditions, does not attract pests, and resists warping or twisting over time. It also offers much sharper detail definition.
Can it be used indoors on wall panels or around fireplaces?
Yes, thanks to its elegant details, it is frequently preferred as a decorative corbel or support in interior wall molding projects, fireplace surrounds, or door transition arches.