Polyurethane Curved Handrail and Balustrade Profile
Technical Specifications
| Material | Polyurethane |
|---|---|
| Surface | Smooth, flat |
| 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 | 228 × 1315 × 50 mm |
| Sales Unit | piece |
Details
Support
Similar Products(Handrails and Balusters System)
The PBK20D1480H is a premium structural element designed as a curved top or bottom rail for architectural balustrade systems. This high-density profile serves as a functional and decorative border for stairs, balconies, and terraces. Engineered to withstand demanding environmental conditions, it bridges the gap between traditional architectural aesthetics and modern material technology, offering a lightweight yet incredibly durable alternative to heavy stone, marble, or high-maintenance timber.
With dimensions of 228 mm in width, 1315 mm in length, and a thickness of 50 mm, this profile features a substantial horizontal curve that is ideal for rounded balconies or grand winding staircases. Manufactured from rigid polyurethane with a density of 150-220 kg/m³, the product mimics the solid feel of wood while preventing common issues like rotting, cracking, or insect infestation. Its closed-cell structure guarantees water absorption of less than 1%, with dimensional stability tested between -20 °C and +70 °C without warping or shrinking.
Visually, the profile boasts a symmetrical stepped design that tapers gently from a wide, flat top surface down to a structured base. The smooth, pre-primed white surface accentuates its clean architectural lines, making it highly adaptable to both classical baluster arrangements and contemporary exterior designs. The factory-applied primer prepares the surface for painting; however, because paint manufacturers often require their own specific undercoats for warranty coverage, an additional primer coat remains optional depending on your project requirements and chosen paint system.
The PBK20D1480H is exceptionally versatile, making it a preferred choice for luxury villa exteriors, hotel lobby staircases, wrapping veranda borders, and elevated terrace perimeters. In grand commercial lobbies or residential gallery spaces, it provides an exquisite finishing touch to curved balustrades. When utilized outdoors, applying a UV-resistant topcoat is mandatory to prevent yellowing and ensure long-term color integrity under direct sunlight.
Installing this profile is straightforward and highly efficient compared to heavy plaster or stone alternatives. The lightweight nature of the material eliminates structural load concerns on balconies. For a secure installation, the surface must be clean and dry. Cut the profile using standard woodworking tools, apply polyurethane (PU) mounting adhesive for seamless bonding, and reinforce with mechanical screws. Fill any joint lines or screw holes with high-quality exterior-grade filler, sand with 180-220 grit sandpaper, and finish with two coats of premium paint.
- This curved railing profile is specifically engineered for premium architectural applications where rounded structural boundaries are required
- It functions perfectly as either an elegant top handrail or a sturdy bottom base rail for balustrade systems on curved balconies, circular garden terraces, and sweeping outdoor staircases
- In luxury residential villas, estates, and boutique hotels, it defines veranda edges, elevated patio borders, and poolside boundaries with clean, structured lines
- For interior design projects, the profile is highly suitable for grand double-height entrance lobbies, curved mezzanine galleries, and classical interior staircases
- When paired with matching balusters, it creates a cohesive, stately barrier
- Additionally, it can be utilized in commercial spaces such as restaurants, wedding venues, and corporate headquarters to partition VIP areas or frame decorative balustrades
- Its excellent resistance to moisture makes it ideal for coastal properties and humid environments where traditional wood or metal would quickly deteriorate
- Ensure the installation surface is completely clean, dry, and structurally sound
- Measure and cut the profile to the exact length using a fine-toothed saw
- Apply a generous bead of polyurethane (PU) mounting adhesive to the mounting surfaces to ensure a strong, seamless bond
- Mechanical fastening with non-corrosive screws is mandatory to secure the profile during the adhesive's curing process
- Once the adhesive has fully cured, fill all screw holes and joints with an exterior-grade acrylic or polyurethane filler
- Sand the filled areas gently using 180-220 grit sandpaper to achieve a perfectly smooth finish
- Finally, apply a high-quality UV-resistant paint to protect the material from environmental exposure and complete the aesthetic look
- Due to its closed-cell structure, this profile requires minimal maintenance
- It can be easily cleaned using a damp cloth and mild soapy water
- Avoid using high-pressure washers, abrasive cleaning pads, or harsh chemical solvents, as these can damage the painted finish
- For outdoor installations, we recommend inspecting the paint coating every few years and applying a fresh coat of UV-resistant exterior paint if any weathering or micro-cracking is observed, ensuring the underlying material remains protected
Can this profile be used for outdoor curved balconies?
Yes, the PBK20D1480H is fully compatible with outdoor environments. Made from high-density rigid material with a water absorption rate of under 1%, it will not rot, swell, or warp when exposed to rain, snow, or high humidity. For outdoor applications, finishing the profile with a high-quality UV-resistant paint is mandatory to protect it from sunlight degradation.
How do I glue and secure this curved profile?
For a secure and permanent installation, you must use polyurethane (PU) mounting adhesive along the mounting surfaces. Because of the structural nature of handrails, mechanical fastening with screws is mandatory to ensure safety and stability. After the adhesive cures, fill the screw holes and joints with a suitable filler before painting.
Does it require an additional primer before painting?
The profile comes with a factory-applied white primer that prepares the surface for paint adhesion. However, because paint manufacturers do not guarantee their products unless their own system primers are used, applying an additional primer coat is optional and depends entirely on the specific recommendations of your chosen paint brand.
What are the main advantages over wood or stone handrails?
Compared to stone or concrete, this profile is extremely lightweight (density of 150-220 kg/m³), which prevents extra structural loads on your balcony. Unlike wood, it does not rot, crack, split, or attract insects, offering a much longer lifespan with minimal maintenance, while still retaining the solid feel and premium look of traditional materials.
Can the length or curve of the profile be adjusted?
The profile is manufactured with a set horizontal curve and a length of 1315 mm. It can be easily cut, mitered, and joined using standard woodworking tools to fit your specific layout. For continuous curved balustrades, multiple segments can be aligned, bonded with polyurethane assembly adhesive, and filled to create a seamless, cohesive railing.