





Decorative Polyurethane Round Arch Design
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 175 cm |
| Dimensions | 170 × 1750 × 971 mm |
| Weight | 0.63 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 Arch Model
- Polyurethane Decorative Round Curved Arch Models
- Polyurethane Round Curved Arch Designs
- Polyurethane Round Arch Model 155 cm
- Decorative Polyurethane Round Arch Model
- Polyurethane Round Curved Arch with Keystone
- Contact
Matching straight casing profile P1456 for the P1456D135VID 135 cm curved door crown
Complete your arched door or window frame seamlessly. The P1456 straight molding perfectly matches the profile of the P1456D135VID curved pediment for a unified, elegant look.
Curved arch molding alternatives in different styles for P1456D135VID
These curved arch models share the exact same dimensions as P1456D135VID, offering alternative design styles for your project. They ensure a perfect fit while allowing you to customize the aesthetic of your decorative trim.
Frequently Used Together
































































Similar Products(Round Arch Mouldings)






















































































































































The architectural element model P1456D135VID blends classic circular forms—one of the most distinguished elements of traditional architecture—with modern manufacturing technology. Designed to create structural depth over doorways, hallway passages, and window tops, this round arch brings a balanced architectural harmony to any space. The central keystone detail adds a touch of traditional stonemasonry, beautifully balancing the visual weight of the design.
With a profile depth of 170 mm, an outer width of 1750 mm, and a vertical height of 971 mm, its technical dimensions offer ideal proportions for wide openings and high-ceilinged spaces. Manufactured from high-density rigid polyurethane (150-220 kg/m³), this model provides wood-like durability while remaining lightweight to avoid adding structural load. Thanks to its closed-cell structure, its water absorption rate is under 1%, completely preventing swelling, rotting, or dimensional warping in humid environments.
Visually, the product features a smooth, flowing curve with stepped profile details that follow the circular line, capturing light and shadow beautifully. The trapezoidal keystone motif at the apex unites the curved lines from both sides, creating an elegant aesthetic focal point. A factory-applied white primer ensures the surface is ready for final topcoat paint applications.
Offering versatile applications, this arch model is highly favored for defining living room and hallway transitions indoors, as well as creating elegant partitions in hotel lobbies or restaurants. Thanks to its high resistance to water and weathering, it also serves as an excellent decorative window pediment on exterior facades. It adds a strong structural identity to both classic neoclassical facades and eclectic interior design projects.
Compared to traditional materials like plaster, marble, or wood, it offers significant advantages in terms of easy installation and impact resistance. During installation, using Polure Polfix adhesive and securing mechanically with screws is mandatory. Once screw holes and joints are filled with suitable putty and sanded, a flawless finish is achieved with a topcoat of paint. For outdoor applications, UV-resistant paints should be used to protect the material from sunlight.
- This decorative round arch is a versatile moulding element designed to highlight transition zones and openings in architectural projects
- Indoors, it creates a sense of depth in wide doorless living room transitions, hallway connections, and arched niche designs
- On exteriors, it is used for decorative framing on villa window tops, building entrance portals, and arched balcony openings
- It is an ideal choice for creating a prestigious atmosphere in hotel lobbies, classically styled restaurants, and administrative buildings
- For outdoor applications, it must be coated with UV-protective paint
- The installation surface must be dry, clean, and free of dust
- Apply Polure Polfix adhesive to the back of the arch and position it onto the mounting surface
- For safety and long-term durability, mechanical fastening with screws is mandatory
- Screw heads and joints should be filled with exterior-grade putty
- Once dry, sand the putty smooth using 180-220 grit sandpaper
- The product is shipped factory-primed; however, due to paint manufacturers' warranty conditions regarding their own priming systems, applying an additional primer before the topcoat is optional and at the customer's discretion
- Finally, apply at least two coats of water-based or synthetic paint
- Thanks to its closed-cell structure, the polyurethane curved arch is unaffected by water and moisture, making maintenance extremely easy
- Indoors, it can be cleaned using a duster or a slightly damp cloth
- Avoid using abrasive chemicals or harsh solvents during cleaning
- For exterior applications, accumulated dust and dirt can be washed off with high-pressure water
- Checking the paint condition of outdoor products every few years and repainting if necessary helps maintain the material's resistance to UV rays
Is this arch resistant to outdoor weather conditions?
Yes, our polyurethane arch is fully resistant to water, moisture, and temperature fluctuations between -100 °C / +80 °C. It can be safely used on exteriors; however, since unpainted polyurethane can yellow under sunlight, it must be coated with a UV-resistant exterior paint for outdoor applications.
Which adhesive should I use for installation?
Only Polure Polfix polyurethane adhesive should be used for installation. Silicone or similar flexible adhesives may lose adhesion over time. Additionally, securing the product mechanically with screws in addition to the adhesive is mandatory for safety.
Is the product shipped painted, and is an additional primer required?
Our product is shipped with a factory-applied white primer. While this prepares the surface for painting, paint manufacturers do not guarantee their products on surfaces where their own primers are not used. Therefore, applying an additional primer before the topcoat is entirely at the customer's discretion; Polure does not accept liability for the paints used.
What are the advantages of polyurethane arches compared to plaster arches?
Compared to plaster alternatives, polyurethane arches are extremely lightweight and do not add extra static load to the building. They offer high impact resistance, do not break, and will not crack. Installation is much faster and cleaner, saving time and labor on site.
Which door widths is the 170x1750x971 mm size suitable for?
This model is designed for door transitions or wide window tops with an outer width (span) of approximately 175 cm. With a profile depth of 170 mm, it creates a prominent and substantial relief on the wall, providing a grand framing effect.
Matching straight casing profile P1456 for the P1456D135VID 135 cm curved door crown
Complete your arched door or window frame seamlessly. The P1456 straight molding perfectly matches the profile of the P1456D135VID curved pediment for a unified, elegant look.
Curved arch molding alternatives in different styles for P1456D135VID
These curved arch models share the exact same dimensions as P1456D135VID, offering alternative design styles for your project. They ensure a perfect fit while allowing you to customize the aesthetic of your decorative trim.
Frequently Used Together
































































Similar Products(Round Arch Mouldings)






















































































































































The architectural element model P1456D135VID blends classic circular forms—one of the most distinguished elements of traditional architecture—with modern manufacturing technology. Designed to create structural depth over doorways, hallway passages, and window tops, this round arch brings a balanced architectural harmony to any space. The central keystone detail adds a touch of traditional stonemasonry, beautifully balancing the visual weight of the design.
With a profile depth of 170 mm, an outer width of 1750 mm, and a vertical height of 971 mm, its technical dimensions offer ideal proportions for wide openings and high-ceilinged spaces. Manufactured from high-density rigid polyurethane (150-220 kg/m³), this model provides wood-like durability while remaining lightweight to avoid adding structural load. Thanks to its closed-cell structure, its water absorption rate is under 1%, completely preventing swelling, rotting, or dimensional warping in humid environments.
Visually, the product features a smooth, flowing curve with stepped profile details that follow the circular line, capturing light and shadow beautifully. The trapezoidal keystone motif at the apex unites the curved lines from both sides, creating an elegant aesthetic focal point. A factory-applied white primer ensures the surface is ready for final topcoat paint applications.
Offering versatile applications, this arch model is highly favored for defining living room and hallway transitions indoors, as well as creating elegant partitions in hotel lobbies or restaurants. Thanks to its high resistance to water and weathering, it also serves as an excellent decorative window pediment on exterior facades. It adds a strong structural identity to both classic neoclassical facades and eclectic interior design projects.
Compared to traditional materials like plaster, marble, or wood, it offers significant advantages in terms of easy installation and impact resistance. During installation, using Polure Polfix adhesive and securing mechanically with screws is mandatory. Once screw holes and joints are filled with suitable putty and sanded, a flawless finish is achieved with a topcoat of paint. For outdoor applications, UV-resistant paints should be used to protect the material from sunlight.
- This decorative round arch is a versatile moulding element designed to highlight transition zones and openings in architectural projects
- Indoors, it creates a sense of depth in wide doorless living room transitions, hallway connections, and arched niche designs
- On exteriors, it is used for decorative framing on villa window tops, building entrance portals, and arched balcony openings
- It is an ideal choice for creating a prestigious atmosphere in hotel lobbies, classically styled restaurants, and administrative buildings
- For outdoor applications, it must be coated with UV-protective paint
- The installation surface must be dry, clean, and free of dust
- Apply Polure Polfix adhesive to the back of the arch and position it onto the mounting surface
- For safety and long-term durability, mechanical fastening with screws is mandatory
- Screw heads and joints should be filled with exterior-grade putty
- Once dry, sand the putty smooth using 180-220 grit sandpaper
- The product is shipped factory-primed; however, due to paint manufacturers' warranty conditions regarding their own priming systems, applying an additional primer before the topcoat is optional and at the customer's discretion
- Finally, apply at least two coats of water-based or synthetic paint
- Thanks to its closed-cell structure, the polyurethane curved arch is unaffected by water and moisture, making maintenance extremely easy
- Indoors, it can be cleaned using a duster or a slightly damp cloth
- Avoid using abrasive chemicals or harsh solvents during cleaning
- For exterior applications, accumulated dust and dirt can be washed off with high-pressure water
- Checking the paint condition of outdoor products every few years and repainting if necessary helps maintain the material's resistance to UV rays
Is this arch resistant to outdoor weather conditions?
Yes, our polyurethane arch is fully resistant to water, moisture, and temperature fluctuations between -100 °C / +80 °C. It can be safely used on exteriors; however, since unpainted polyurethane can yellow under sunlight, it must be coated with a UV-resistant exterior paint for outdoor applications.
Which adhesive should I use for installation?
Only Polure Polfix polyurethane adhesive should be used for installation. Silicone or similar flexible adhesives may lose adhesion over time. Additionally, securing the product mechanically with screws in addition to the adhesive is mandatory for safety.
Is the product shipped painted, and is an additional primer required?
Our product is shipped with a factory-applied white primer. While this prepares the surface for painting, paint manufacturers do not guarantee their products on surfaces where their own primers are not used. Therefore, applying an additional primer before the topcoat is entirely at the customer's discretion; Polure does not accept liability for the paints used.
What are the advantages of polyurethane arches compared to plaster arches?
Compared to plaster alternatives, polyurethane arches are extremely lightweight and do not add extra static load to the building. They offer high impact resistance, do not break, and will not crack. Installation is much faster and cleaner, saving time and labor on site.
Which door widths is the 170x1750x971 mm size suitable for?
This model is designed for door transitions or wide window tops with an outer width (span) of approximately 175 cm. With a profile depth of 170 mm, it creates a prominent and substantial relief on the wall, providing a grand framing effect.

