High Density Polyurethane Balustrades
Architectural Mall manufactures high density polyurethane balustrades and railing systems for porches, balconies, stairs, rooftops, terraces, and other exterior architectural applications where a lightweight, structural, paint-grade system is preferred. These polyurethane balustrade systems are designed to emulate the look of painted wood without the common problems of natural wood, including rot, cracking, splitting, and insect damage.
Each system arrives factory-primed in white and requires a final paint finish on the jobsite. Polyurethane balustrades are best suited for straight railing runs, flat sections, and straight stair applications, with rail spans available up to 12 feet depending on the selected system. For curved or radius balustrades, Polymer Stone is typically the better material choice.
Structural HDP Balustrade Systems with Internal Reinforcement
High density polyurethane balustrades are not just decorative architectural details. These systems are designed as structural exterior railing assemblies, with key components reinforced internally using PVC or galvanized steel pipe depending on the system and application.
The molded polyurethane material creates a rigid, wood-like product that is lightweight, paint-grade, and resistant to rot, cracking, splitting, and insect damage. Internal reinforcement helps provide the strength needed for residential and commercial balustrade installations while still keeping the system much lighter than many stone, concrete, or masonry alternatives.
Why Choose HDP Polyurethane Balustrades?
HDP polyurethane balustrades are a strong choice when a project needs a lightweight, structural, paint-grade railing system with the appearance of painted wood. They work well for porches, balconies, rooftops, terraces, upper-level areas, renovation projects, and straight stair applications where a lighter balustrade system is preferred.
Because the material is synthetic, polyurethane does not absorb moisture like natural wood and does not attract insects. This helps avoid common wood-related problems such as rot, cracking, splitting, and insect damage while still providing a traditional painted architectural look.
Polyurethane balustrades arrive factory-primed and require a final paint finish on the jobsite. Like other painted exterior products, long-term maintenance will depend on the quality of the paint system, exposure conditions, and ongoing upkeep over time.
Polyurethane balustrades are best suited for straight exterior railing sections, flat runs, and straight stair layouts. For curved balconies, radius layouts, curved stairs, or projects where a factory-colored stone-like finish is preferred, Architectural Mall typically recommends Polymer Stone balustrades instead.
Promotional Polyurethane Balustrade System Options
The HDP polyurethane balustrade systems below are current promotional options in common rail sizes. Each system includes the top rail, bottom rail, balusters, support blocks, and hardware for a standard straight, flat balustrade layout. These promotional systems are fixed assemblies, so the rails and balusters cannot be mixed with other styles at the promotional price. For stairs, 42″ heights, custom measurements, or project-specific hardware, contact Architectural Mall with your drawings, measurements, or project details.
The 4-1/4″ polyurethane balustrade system is a lighter-profile option for straight porch, balcony, and railing applications where a smaller architectural scale is preferred.
- Railing: BR7600, BR7610
- Baluster: B7028 style
- Finish: Primed white, ready for final paint on the jobsite
- Code: 32″ height, 4″ sphere spacing
- Application: Straight, flat rail sections
The 6″ high density polyurethane balustrade system offers balanced proportions and works well with baluster styles measuring under 4-1/2″ wide. It is a versatile option for residential porch, balcony, and exterior railing applications.
- Rail: 6″ x 4″ wide
- Baluster: BAL-25 style
- Newel Post: 8″ x 8″ x 48″ with recessed panels
- Cap: 9″ routed cap with ball (pictured)
- Finish: Primed white, ready for final paint on the jobsite
- Code: 36″ height, 4″ sphere spacing
- Application: Straight, flat rail sections
The 7″ high density polyurethane balustrade system is the most commonly specified option. It offers classic proportions and works with a wide range of baluster styles for residential and light commercial porch, balcony, and exterior railing applications
- Rail: 7″ wide x 5-1/2″ high
- Baluster: B7022-1 style
- Newel Post: NP4808
- Finish: Primed white, ready for final paint on the jobsite
- Application: Straight, flat rail sections
The 12″ high density polyurethane balustrade system is designed for larger residential and commercial applications where a more substantial rail profile and strong architectural presence are desired.
- Rail: 12″ wide x 5-1/2″ high
- Baluster: B77624 style
- Newel Post: NP4812
- Finish: Primed white, ready for final paint on the jobsite
- Application: Straight, flat rail sections
Polyurethane vs Polymer Stone Balustrades
Polyurethane and Polymer Stone balustrades are both exterior architectural balustrade systems, and many styles can be manufactured with a similar overall profile. The better material depends on the project layout, finish preference, span requirements, and weight considerations.
HDP polyurethane is often the better choice when the project needs a lightweight, structural, paint-grade railing system for straight runs, flat sections, or straight stair applications. It is designed to emulate the look of painted wood and requires a final paint finish after installation.
Polymer Stone is often the better choice when the project calls for a factory-colored finish, stone-like texture options, longer rail spans, or curved and radius layouts. It can be used for both straight and curved balustrade applications.
In some projects, both materials may be used together. HDP polyurethane may be selected for upper balconies, rooftop areas, or other locations where weight is a concern, while Polymer Stone may be selected for areas where a factory-finished, stone-like material is preferred
Polyurethane Balustrade FAQ
Are HDP polyurethane balustrades structural?
Yes. HDP polyurethane balustrades are designed as structural exterior railing assemblies. Key components are internally reinforced with galvanized steel or PVC pipe depending on the system and application, helping provide structural support while keeping the system lightweight.
Do polyurethane balustrades need to be painted?
Yes. Polyurethane balustrade systems arrive factory-primed in white and require a final paint finish on the jobsite after installation. Because the material is synthetic, it will not rot, crack, or split like natural wood, but long-term finish maintenance will depend on climate, exposure, and paint quality.
Can polyurethane balustrades be curved?
HDP polyurethane balustrades are designed for straight railing runs, flat sections, and straight stair applications. For curved balconies, radius stairs, or projects requiring rail spans over 12 feet, Polymer Stone is typically the recommended material choice.
Product Resources
Review additional balustrade resources for planning, design, and project coordination:
Need Help Selecting the Right Balustrade System?
Planning a porch, balcony, stair, rooftop, or terrace railing project? Email us your drawings, photos, measurements, or architectural plans, and Architectural Mall can help you choose the right HDP polyurethane balustrade system or call 877-279-9993
