Square Column Cap
Polure square column caps provide a clean architectural transition and upper termination for four-sided interior support posts and exterior porch pillars. Molded from high-density rigid polyurethane (150-220 kg/m³), these square capitals deliver sharp geometric molding profiles and wood-equivalent impact durability without adding heavy dead load to ceilings or architraves. Their closed-cell structural body retains water absorption strictly under 1%, making them 100% rot-proof, swelling-resistant, and mold-free in outdoor weather or humid spaces. Certified B2 for fire safety and stable from -100 °C / +80 °C, they arrive factory pre-primed with white acrylic primer. Installation is completed with polyurethane assembly adhesive and countersunk screws.
Frequently Asked Questions
What is the primary function of a Polure square column cap?
A square column cap serves as the upper ornamental capital for square 4-sided columns, capping the shaft and interfacing with beam or architrave structures.
Are Polure square column caps load-bearing?
No, Polure square column caps are decorative non-load-bearing covers. Overhead weight must be carried by internal structural timber or steel cores.
What material density is used for square column caps?
They are molded from high-density rigid polyurethane (150-220 kg/m³), providing wood-like physical strength and impact resistance.
How are square column caps mounted?
Apply continuous lines of PU assembly adhesive on all contact surfaces, then secure with countersunk mechanical screws. Fill screw heads with putty, sand, and paint.
Can silicone adhesive be used to mount square column caps?
No, silicone adhesive is strictly forbidden because it lacks structural bonding capability. Only polyurethane assembly adhesive paired with mechanical screws must be used.