KOMA Video Gallery
Brian Gurry shows the many ways KOMA outperforms the competition.
In the unique KOMA Celuka process, special extrusion tooling allows for quick cooling of the outer surface of the Celuka PVC material, and an inward expansion of the cellular PVC, resulting in a product profile with a hard, smooth outer surface and a strong cellular core. Extruding the PVC around a torpedo-shaped device, and water-cooling, is what adds hardness in the Celuka process, and one reason we can confidently state KOMA Celuka cellular PVC lumber is the hardest surface in the industry.
CELUKA Stair Risers offer the toughest solution to high traffic areas of your home's interior and exterior stairs and steps. Milled for perfect fit, you do not have to second guess if this is the right board to do the job.