Staircase Spindle
Polure staircase spindles bring classical balustrade aesthetics, architectural balance, and refined detailing to interior and exterior staircases. Manufactured from high-density rigid polyurethane (150-220 kg/m³), these spindles combine wood-like impact resistance with a lightweight structural footprint. Featuring a closed-cell physical structure with water absorption under 1%, they will not rot, swell, or warp when installed in humid indoor spaces or outdoor staircases. Supplied with a factory-applied white acrylic primer, they easily accept topcoats, though exterior applications require UV-resistant elastomeric paint. Installation requires clean surfaces, applying a continuous bead of polyurethane assembly adhesive on upper and lower contact edges, and securing with countersunk screws. Screw heads are filled with facade or acrylic putty, sanded with 180-220 grit, and painted.
Frequently Asked Questions
What density material is used in the Polure staircase spindle?
It is crafted from high-density rigid polyurethane (150-220 kg/m³), offering high impact resistance and B2 fire class safety.
Is the staircase spindle suitable for outdoor staircase installations?
Yes, its water absorption under 1% prevents rot and swelling. Outdoor installations must be painted with UV-resistant exterior paint.
How is the staircase spindle secured to the railing?
Mounting uses polyurethane assembly adhesive on top and bottom contact areas combined with countersunk screws. Putty, sand, and paint.
What paint is recommended for the staircase spindle outdoors?
For outdoor use, elastic, UV-resistant exterior paint must be applied over the primed surface to prevent color fading.
Why is silicone forbidden for mounting staircase spindles?
Silicone adhesive lacks structural bonding strength. Only high-strength polyurethane assembly adhesive must be used.