Polyurethane Curved Arch with Keystone Model

The P1456D75VID curved arch is a structural decorative element that seamlessly blends classic architectural style with modern manufacturing technology for both interior and exterior transitions. Designed to create an elegant curve over doors, windows, and hallway openings, this model adds depth to structures with its prominent central keystone detail. By softening straight lines, it establishes a fluid visual bridge between spaces while creating an optical illusion that makes ceilings appear higher. It is the ideal design component for architects looking to bring the noble presence of traditional stonework into modern living spaces.

The product features balanced proportions with a profile depth of 170 mm, a span width of 1150 mm, and a total height of 671 mm. It is manufactured to high standards of 150-200 kg/m³ using high-density rigid polyurethane raw material. Although it is as durable and tough as wood, its lightweight structure ensures it adds no extra load to the load-bearing columns or facade systems of buildings, unlike plaster or concrete alternatives. Thanks to its closed-cell structure, it is completely resistant to moisture, humidity, and water. Consequently, it does not suffer from deformations such as cracking, flaking, swelling, or insect infestation over time, maintaining its original form for many years.

In its visual design, the stepped curved profile lines merge with a trapezoidal keystone that widens at the apex. This symmetrical structure delivers the aesthetics of traditional stone carving with smooth, clean lines. The stepped transitions, which beautifully capture the play of light and shadow, create a rich relief effect on the facade. It is frequently preferred to enhance facade character in both historical restoration projects and modern neoclassical designs, giving an architectural identity to ordinary wall transitions.

Offering a wide range of applications, this structural element finds its place on the exterior windows of luxury residential projects, as pediments over villa entrance doors, or in interior transitions of living rooms, halls, and corridors. It is also used as a dividing arch in hotel lobbies, restaurant niches, and prestigious office projects. Thanks to its complete resistance to water and outdoor weather conditions, it can be safely installed on both interiors and exteriors. For outdoor applications, it must be coated with UV-resistant paint to protect the material from the effects of solar radiation.

During the installation phase, it is crucial that the surface is dry and clean. After securing the product to the surface with Polure Polfix adhesive, the installation is reinforced with mechanical screw anchoring. Once the screw heads and joints are filled with exterior-grade putty and smoothed with 180-220 grit sandpaper, the painting process can begin. The factory-applied primer coat facilitates paint adhesion. However, applying an additional coat of primer remains optional under the application standards and warranties of paint manufacturers, leaving the choice entirely to the installer.