
























Polyurethane Round Curved Arch Design with Keystone
Technical Specifications
| Material | Polyurethane |
|---|---|
| Surface | Smooth, flat curved surface |
| 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 200 cm |
| Dimensions | 170 × 2000 × 1096 mm |
| Weight | 5.67 kg |
| Sales Unit | piece |
Details
Support
- DWG Library
- Architectural Round Arch Trim: Dimensioning and Fitting Guide
- Gallery
- Polyurethane Window Casing & Decorative Facade Profiles
- Polyurethane Round Arches and Curved Transition Mouldings
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- Polyurethane Round Arch with Decorative Keystone
- Polyurethane Round Arch Model 155 cm
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- Contact
Matching P1456 straight wall molding for the P1456D160VID 160 cm arched pediment
Create a seamless transition around your doors and windows. The P1456 straight profile perfectly aligns with the P1456D160VID arched crown to form a cohesive, elegant frame.
Curved arch molding alternatives in the same size as P1456D160VID
Explore alternative curved arch designs sharing identical dimensions with P1456D160VID. These compatible models offer diverse stylistic variations to perfectly match your interior design needs.
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The P1456D160VID round curved arch with keystone is a premium decorative element that seamlessly blends classic architectural elegance with modern engineering for both interior transitions and exterior facade designs. Featuring a smooth semi-circular curve and a prominent trapezoidal keystone at its apex, it adds depth and structural character to any space. It serves as an aesthetic divider and frame for over-door portals, hallway transitions, or window arch decorations.
With a width of 170 mm, a span (length) of 1980 mm, and a height of 1096 mm, this arch offers ideal proportions for wide transition areas. Manufactured from high-density (150-220 kg/m³) rigid polyurethane, it matches the hardness of wood while remaining exceptionally lightweight. Thanks to its closed-cell structure, it is fully resistant to moisture, humidity, and water, preventing rotting or swelling. It maintains its dimensional stability under temperature fluctuations from -100 °C / +80 °C, resisting structural deformations like cracking or warping.
The design showcases stepped profile lines along the curve that merge with a sleek central keystone, creating a balanced play of light and shadow. Include the product weight and fixing loads when assessing the substrate and supporting structure. The factory-applied primer prepares the surface for the final coat of paint. However, since paint manufacturers do not guarantee applications without their own primers, applying an additional post-installation primer is optional and at the user's discretion. Polure assumes no responsibility for the performance of the paints used.
The high durability and lightweight advantages of polyurethane make the installation process highly practical. During installation, Polure Polfix adhesive should be applied to the back surfaces and joints, followed by mechanical fastening with screws. For outdoor applications, it must be painted with a UV-resistant exterior paint to prevent yellowing caused by sunlight over time.
- The P1456D160VID round curved arch model is highly versatile, making it ideal for both interior design and exterior facade projects
- Indoors, it is frequently preferred for wide transition corridors between living rooms and entryways, framing large doorways, and crowning decorative wall niches
- It is perfect for designing grand transition portals in prestigious commercial spaces such as offices, hotel lobbies, or restaurants
- Outdoors, it can be safely used as a crowning element above villa entrance doors, for classical facade ornamentation above windows, or as decorative cladding in arched veranda openings
- Thanks to its water and moisture-resistant structure, it retains its aesthetic appeal for many years without any structural degradation in high-humidity areas like bathrooms or indoor pools
- The curved surface for installation must be completely free of dust, moisture, and dirt
- Apply Polure Polfix polyurethane adhesive to the joints of the arch pieces and the back surfaces contacting the wall
- Once positioned, mechanical fastening with screws at key points is mandatory to prevent slipping until the adhesive cures
- Screw heads should be countersunk
- After Polure Polfix dries, trim any excess adhesive, and fill screw holes and joints with a high-quality exterior filler
- Once the filler is dry, sand it smooth using 180-220 grit sandpaper
- Following an optional extra coat of primer, complete the installation by applying at least two coats of water-based paint for interiors, or UV-resistant paint for exteriors
- With near-zero water absorption, the polyurethane curved arch is extremely easy to maintain
- For indoor use, it can be cleaned periodically using a duster or a damp cloth
- For heavy dirt, mild soapy water can be safely used
- For exterior applications, it is suitable for pressure washing
- Avoid chemical solvents and abrasive acid-based cleaners
- For outdoor installations, check the joint filler and paint integrity once a year, depending on weather exposure, and apply local touch-ups or re-filling if necessary
Can this arch model withstand outdoor weather conditions?
Yes, the product is resistant to temperatures ranging from -100 °C / +80 °C and has low water absorption (below 1%) due to its closed-cell structure. However, if used outdoors, it must be painted with a UV-resistant exterior paint after installation to protect it from the yellowing effects of sunlight.
Is it mandatory to use screws during installation?
Yes, mechanical fastening with screws is required alongside Polure Polfix adhesive to safely support the weight of the arch and prevent slipping while the adhesive cures. Screw heads are then concealed with filler for a seamless finish.
Can the product be used directly without painting?
No, if left unpainted, polyurethane can yellow over time due to ultraviolet (UV) rays. Therefore, it must be painted after installation using water-based paints for interiors and UV-protected paints for exteriors.
What are the advantages of polyurethane arches compared to plaster ones?
Polyurethane arches are exceptionally lightweight compared to plaster, adding no static load to the building. They are impact-resistant and do not crack during installation. Additionally, being fully moisture-resistant, they eliminate issues like flaking, molding, or blistering.
Is the factory primer sufficient, or is an extra primer coat needed?
The factory-applied primer smoothens the surface and prepares it for painting. However, since paint manufacturers do not guarantee performance without their own primers, applying an additional primer coat is entirely optional and up to the customer.
Matching P1456 straight wall molding for the P1456D160VID 160 cm arched pediment
Create a seamless transition around your doors and windows. The P1456 straight profile perfectly aligns with the P1456D160VID arched crown to form a cohesive, elegant frame.
Curved arch molding alternatives in the same size as P1456D160VID
Explore alternative curved arch designs sharing identical dimensions with P1456D160VID. These compatible models offer diverse stylistic variations to perfectly match your interior design needs.
Frequently Used Together
































































Similar Products(Round Arch Mouldings)






















































































































































The P1456D160VID round curved arch with keystone is a premium decorative element that seamlessly blends classic architectural elegance with modern engineering for both interior transitions and exterior facade designs. Featuring a smooth semi-circular curve and a prominent trapezoidal keystone at its apex, it adds depth and structural character to any space. It serves as an aesthetic divider and frame for over-door portals, hallway transitions, or window arch decorations.
With a width of 170 mm, a span (length) of 1980 mm, and a height of 1096 mm, this arch offers ideal proportions for wide transition areas. Manufactured from high-density (150-220 kg/m³) rigid polyurethane, it matches the hardness of wood while remaining exceptionally lightweight. Thanks to its closed-cell structure, it is fully resistant to moisture, humidity, and water, preventing rotting or swelling. It maintains its dimensional stability under temperature fluctuations from -100 °C / +80 °C, resisting structural deformations like cracking or warping.
The design showcases stepped profile lines along the curve that merge with a sleek central keystone, creating a balanced play of light and shadow. Include the product weight and fixing loads when assessing the substrate and supporting structure. The factory-applied primer prepares the surface for the final coat of paint. However, since paint manufacturers do not guarantee applications without their own primers, applying an additional post-installation primer is optional and at the user's discretion. Polure assumes no responsibility for the performance of the paints used.
The high durability and lightweight advantages of polyurethane make the installation process highly practical. During installation, Polure Polfix adhesive should be applied to the back surfaces and joints, followed by mechanical fastening with screws. For outdoor applications, it must be painted with a UV-resistant exterior paint to prevent yellowing caused by sunlight over time.
- The P1456D160VID round curved arch model is highly versatile, making it ideal for both interior design and exterior facade projects
- Indoors, it is frequently preferred for wide transition corridors between living rooms and entryways, framing large doorways, and crowning decorative wall niches
- It is perfect for designing grand transition portals in prestigious commercial spaces such as offices, hotel lobbies, or restaurants
- Outdoors, it can be safely used as a crowning element above villa entrance doors, for classical facade ornamentation above windows, or as decorative cladding in arched veranda openings
- Thanks to its water and moisture-resistant structure, it retains its aesthetic appeal for many years without any structural degradation in high-humidity areas like bathrooms or indoor pools
- The curved surface for installation must be completely free of dust, moisture, and dirt
- Apply Polure Polfix polyurethane adhesive to the joints of the arch pieces and the back surfaces contacting the wall
- Once positioned, mechanical fastening with screws at key points is mandatory to prevent slipping until the adhesive cures
- Screw heads should be countersunk
- After Polure Polfix dries, trim any excess adhesive, and fill screw holes and joints with a high-quality exterior filler
- Once the filler is dry, sand it smooth using 180-220 grit sandpaper
- Following an optional extra coat of primer, complete the installation by applying at least two coats of water-based paint for interiors, or UV-resistant paint for exteriors
- With near-zero water absorption, the polyurethane curved arch is extremely easy to maintain
- For indoor use, it can be cleaned periodically using a duster or a damp cloth
- For heavy dirt, mild soapy water can be safely used
- For exterior applications, it is suitable for pressure washing
- Avoid chemical solvents and abrasive acid-based cleaners
- For outdoor installations, check the joint filler and paint integrity once a year, depending on weather exposure, and apply local touch-ups or re-filling if necessary
Can this arch model withstand outdoor weather conditions?
Yes, the product is resistant to temperatures ranging from -100 °C / +80 °C and has low water absorption (below 1%) due to its closed-cell structure. However, if used outdoors, it must be painted with a UV-resistant exterior paint after installation to protect it from the yellowing effects of sunlight.
Is it mandatory to use screws during installation?
Yes, mechanical fastening with screws is required alongside Polure Polfix adhesive to safely support the weight of the arch and prevent slipping while the adhesive cures. Screw heads are then concealed with filler for a seamless finish.
Can the product be used directly without painting?
No, if left unpainted, polyurethane can yellow over time due to ultraviolet (UV) rays. Therefore, it must be painted after installation using water-based paints for interiors and UV-protected paints for exteriors.
What are the advantages of polyurethane arches compared to plaster ones?
Polyurethane arches are exceptionally lightweight compared to plaster, adding no static load to the building. They are impact-resistant and do not crack during installation. Additionally, being fully moisture-resistant, they eliminate issues like flaking, molding, or blistering.
Is the factory primer sufficient, or is an extra primer coat needed?
The factory-applied primer smoothens the surface and prepares it for painting. However, since paint manufacturers do not guarantee performance without their own primers, applying an additional primer coat is entirely optional and up to the customer.

