Polyurethane Round Arch Window and Door Pediment Model
Technical Specifications
| Material | Polyurethane |
|---|---|
| Surface | Smooth, flat |
| Color | White |
| Density | 150-220 kg/m³ |
| Water Absorption | below 1% |
| Service Temperature | -100 °C / +80 °C |
| Fire Class | B2 (flame retardant) |
| Paintable | Yes |
| Usage | Indoor + Outdoor |
| Water Resistant | Yes |
| Diameter | Ø 115 cm |
| Dimensions | 137 × 1150 × 575 mm |
| Weight | 3.36 kg |
| Sales Unit | piece |
Details
Support
- DWG Library
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- Contact
Curved arch pediment crown molding for 75 cm doors and windows matching P1456D75VI
Decorative molding ornament designed to seamlessly combine with the P1456D75VI profile. Ideal for creating elegant, classic door and window arch designs.
P1456D75VI Curved Arch Pediment for 75 cm Door and Window Frames
This curved arch header perfectly matches the P1456 straight casing profile for a seamless finish. Ideal for creating cohesive door and window surrounds with durable polyurethane.
Curved arch molding alternatives matching the dimensions of P1456D75VI
These curved arch profiles share the exact same dimensions as P1456D75VI, offering alternative design styles for your project. Perfect for creating cohesive decorative transitions with a custom aesthetic.
Frequently Used Together
Similar Products(Round Arch Mouldings)
The P1456D75VI polyurethane round arch is a premium architectural element designed to crown doors, windows, and transition corridors in both interior and exterior spaces. Reflecting the classic semi-circular form of classical and neoclassical architecture, this decorative arch adds depth and beautifully defines structural boundaries. Frequently preferred in both historical restoration projects and modern-classic designs, this curved arch elevates the architectural elegance of any space.
With a profile width of 137 mm, an outer diameter of 1150 mm, and an arch height of 575 mm, this product forms a geometrically perfect semi-circle. Manufactured from high-density rigid polyurethane (150-220 kg/m³), it offers the durability and hardness of wood while remaining remarkably lightweight. Thanks to its closed-cell structure, its water absorption rate is below 1%, providing complete protection against moisture, rot, insects, and mold—a major technical advantage over traditional wood and plaster alternatives.
The visual design features stepped circular contours (grooves and ridges) symmetrically crafted to enhance the play of light and shadow. Its smooth, flat surface texture ensures a clean, flawless finish after painting without any waviness. Thanks to its high dimensional stability, it does not crumble like plaster or crack and warp like wood, ensuring long-lasting aesthetic integrity even on exterior facades.
Its application areas are highly versatile. Indoors, it can be used in wide hallway transitions, entryways, above decorative wall niches, and on custom library units. On exteriors, it serves as an elegant framing element at the crown of arched window trims, main entrance doors, and patio exits. Being significantly lighter than plaster alternatives, it puts only a limited load on the structure and ensures an easy installation process.
For installation, the surface must be clean and dry. Polure Polfix polyurethane adhesive should be applied to the back of the product, followed by mechanical fastening with screws. Once screw holes and joints are filled with acrylic filler and sanded smooth with 180-220 grit sandpaper, the painting process can begin. Although the factory-applied primer prepares the surface for painting, an additional primer coat can optionally be applied to meet paint manufacturers' warranty conditions. Using UV-resistant paint is mandatory for outdoor applications.
- This decorative round curved arch plays a vital role in both interior design and exterior architecture with its wide range of applications
- Indoors, it is used in living room transitions, open arched passages in entryways and hallways, above wall niches, and in decorative wall panel designs above fireplaces
- It creates an elegant architectural detail in hotel lobbies, restaurant transitions, and cafes with a historical texture
- On exteriors, it is used to give a classical identity to structures, particularly above arched windows of villas and detached houses, as entrance door pediments, and on balcony curves
- Thanks to its structure unaffected by temperature and humidity fluctuations, it offers long-lasting aesthetics in exterior wall cladding
- The installation surface must be free of dust, moisture, and grease
- The ends of the product are precisely cut according to the installation area
- Polure Polfix polyurethane adhesive is applied to the back surface, and the arch is positioned on the wall or facade
- For a secure and long-lasting installation, mechanical fastening with screws is mandatory (standard silicone adhesives must absolutely not be used)
- Screw holes and joints are filled with high-quality acrylic filler, and once dry, sanded smooth with 180-220 grit sandpaper
- Although the factory-applied primer is ready for painting, an additional primer coat can optionally be applied to comply with the paint manufacturer's warranty
- It is then painted with at least two coats of water-based or synthetic paint
- For outdoor applications, the use of UV-resistant paint is mandatory to protect against sunlight
- Maintenance of the polyurethane curved arch is highly practical
- Thanks to its closed-cell structure, it has low water absorption (below 1%) and is unaffected by moisture
- Accumulated dust indoors can be easily cleaned with a damp cloth
- Abrasive chemicals and stiff brushes that could damage the surface primer or paint should not be used during cleaning
- For exterior applications, it can be washed with low-pressure water in case of seasonal dirt buildup
- To preserve the lifespan of the exterior paint, it is recommended to inspect the paint every few years against the effects of wind and sun, and refresh it with UV-protective paint if necessary
Is it resistant to weather conditions on exterior facades?
Yes, our product, manufactured from rigid polyurethane, maintains its shape in temperatures ranging from -100 °C / +80 °C and is completely resistant to moisture with a water absorption rate below 1%. However, since it will be directly exposed to sunlight on the exterior, it must be painted with a UV-resistant exterior paint after installation. If left unpainted, UV rays may cause yellowing over time.
Does the product come pre-primed and ready for installation, or can I paint it directly?
Our product is shipped from the factory with a protective white primer already applied. While this primer prepares the surface for painting, paint manufacturers do not guarantee their paint on surfaces where their own primers have not been applied. Therefore, applying an additional coat of primer is optional, leaving the final decision to our customers for the paint's durability and performance.
Which adhesive should I use for installation, and is mechanical fastening required?
Only Polure Polfix polyurethane adhesive should be used during installation; standard silicone adhesives must absolutely be avoided as they do not provide sufficient strength. Additionally, mechanical fastening with screws is mandatory to ensure the product safely supports its weight and remains durable over time. Screw heads are filled with putty, sanded, and then painted.
What advantages does it have over plaster or wooden arches?
Plaster materials can absorb moisture over time, becoming heavy, cracked, and fragile. Wood, on the other hand, can rot, warp, and attract insects outdoors. Our polyurethane arch, with a density of 150-220 kg/m³ (production target ~160 kg/m³), offers the hardness of wood but is lightweight, water-resistant, insect-resistant, and crack-resistant, providing long-term use while putting only a limited load on the structure.
Do the dimensions of this round curved arch fit every door and window?
Our P1456D75VI model has an outer diameter of 1150 mm (115 cm) and an arch height of 575 mm. These dimensions form a perfect semi-circle, ideal for standard single-door openings and medium-width windows. Depending on your project's width, you can adjust the height by cutting the bottom ends of the product or extend it vertically by combining it with jamb profiles.
Curved arch pediment crown molding for 75 cm doors and windows matching P1456D75VI
Decorative molding ornament designed to seamlessly combine with the P1456D75VI profile. Ideal for creating elegant, classic door and window arch designs.
P1456D75VI Curved Arch Pediment for 75 cm Door and Window Frames
This curved arch header perfectly matches the P1456 straight casing profile for a seamless finish. Ideal for creating cohesive door and window surrounds with durable polyurethane.
Curved arch molding alternatives matching the dimensions of P1456D75VI
These curved arch profiles share the exact same dimensions as P1456D75VI, offering alternative design styles for your project. Perfect for creating cohesive decorative transitions with a custom aesthetic.
Frequently Used Together
Similar Products(Round Arch Mouldings)
The P1456D75VI polyurethane round arch is a premium architectural element designed to crown doors, windows, and transition corridors in both interior and exterior spaces. Reflecting the classic semi-circular form of classical and neoclassical architecture, this decorative arch adds depth and beautifully defines structural boundaries. Frequently preferred in both historical restoration projects and modern-classic designs, this curved arch elevates the architectural elegance of any space.
With a profile width of 137 mm, an outer diameter of 1150 mm, and an arch height of 575 mm, this product forms a geometrically perfect semi-circle. Manufactured from high-density rigid polyurethane (150-220 kg/m³), it offers the durability and hardness of wood while remaining remarkably lightweight. Thanks to its closed-cell structure, its water absorption rate is below 1%, providing complete protection against moisture, rot, insects, and mold—a major technical advantage over traditional wood and plaster alternatives.
The visual design features stepped circular contours (grooves and ridges) symmetrically crafted to enhance the play of light and shadow. Its smooth, flat surface texture ensures a clean, flawless finish after painting without any waviness. Thanks to its high dimensional stability, it does not crumble like plaster or crack and warp like wood, ensuring long-lasting aesthetic integrity even on exterior facades.
Its application areas are highly versatile. Indoors, it can be used in wide hallway transitions, entryways, above decorative wall niches, and on custom library units. On exteriors, it serves as an elegant framing element at the crown of arched window trims, main entrance doors, and patio exits. Being significantly lighter than plaster alternatives, it puts only a limited load on the structure and ensures an easy installation process.
For installation, the surface must be clean and dry. Polure Polfix polyurethane adhesive should be applied to the back of the product, followed by mechanical fastening with screws. Once screw holes and joints are filled with acrylic filler and sanded smooth with 180-220 grit sandpaper, the painting process can begin. Although the factory-applied primer prepares the surface for painting, an additional primer coat can optionally be applied to meet paint manufacturers' warranty conditions. Using UV-resistant paint is mandatory for outdoor applications.
- This decorative round curved arch plays a vital role in both interior design and exterior architecture with its wide range of applications
- Indoors, it is used in living room transitions, open arched passages in entryways and hallways, above wall niches, and in decorative wall panel designs above fireplaces
- It creates an elegant architectural detail in hotel lobbies, restaurant transitions, and cafes with a historical texture
- On exteriors, it is used to give a classical identity to structures, particularly above arched windows of villas and detached houses, as entrance door pediments, and on balcony curves
- Thanks to its structure unaffected by temperature and humidity fluctuations, it offers long-lasting aesthetics in exterior wall cladding
- The installation surface must be free of dust, moisture, and grease
- The ends of the product are precisely cut according to the installation area
- Polure Polfix polyurethane adhesive is applied to the back surface, and the arch is positioned on the wall or facade
- For a secure and long-lasting installation, mechanical fastening with screws is mandatory (standard silicone adhesives must absolutely not be used)
- Screw holes and joints are filled with high-quality acrylic filler, and once dry, sanded smooth with 180-220 grit sandpaper
- Although the factory-applied primer is ready for painting, an additional primer coat can optionally be applied to comply with the paint manufacturer's warranty
- It is then painted with at least two coats of water-based or synthetic paint
- For outdoor applications, the use of UV-resistant paint is mandatory to protect against sunlight
- Maintenance of the polyurethane curved arch is highly practical
- Thanks to its closed-cell structure, it has low water absorption (below 1%) and is unaffected by moisture
- Accumulated dust indoors can be easily cleaned with a damp cloth
- Abrasive chemicals and stiff brushes that could damage the surface primer or paint should not be used during cleaning
- For exterior applications, it can be washed with low-pressure water in case of seasonal dirt buildup
- To preserve the lifespan of the exterior paint, it is recommended to inspect the paint every few years against the effects of wind and sun, and refresh it with UV-protective paint if necessary
Is it resistant to weather conditions on exterior facades?
Yes, our product, manufactured from rigid polyurethane, maintains its shape in temperatures ranging from -100 °C / +80 °C and is completely resistant to moisture with a water absorption rate below 1%. However, since it will be directly exposed to sunlight on the exterior, it must be painted with a UV-resistant exterior paint after installation. If left unpainted, UV rays may cause yellowing over time.
Does the product come pre-primed and ready for installation, or can I paint it directly?
Our product is shipped from the factory with a protective white primer already applied. While this primer prepares the surface for painting, paint manufacturers do not guarantee their paint on surfaces where their own primers have not been applied. Therefore, applying an additional coat of primer is optional, leaving the final decision to our customers for the paint's durability and performance.
Which adhesive should I use for installation, and is mechanical fastening required?
Only Polure Polfix polyurethane adhesive should be used during installation; standard silicone adhesives must absolutely be avoided as they do not provide sufficient strength. Additionally, mechanical fastening with screws is mandatory to ensure the product safely supports its weight and remains durable over time. Screw heads are filled with putty, sanded, and then painted.
What advantages does it have over plaster or wooden arches?
Plaster materials can absorb moisture over time, becoming heavy, cracked, and fragile. Wood, on the other hand, can rot, warp, and attract insects outdoors. Our polyurethane arch, with a density of 150-220 kg/m³ (production target ~160 kg/m³), offers the hardness of wood but is lightweight, water-resistant, insect-resistant, and crack-resistant, providing long-term use while putting only a limited load on the structure.
Do the dimensions of this round curved arch fit every door and window?
Our P1456D75VI model has an outer diameter of 1150 mm (115 cm) and an arch height of 575 mm. These dimensions form a perfect semi-circle, ideal for standard single-door openings and medium-width windows. Depending on your project's width, you can adjust the height by cutting the bottom ends of the product or extend it vertically by combining it with jamb profiles.