A smooth column is a column with a simple cylindrical shaft, without fluting, reeding, or paneling. The smooth column is the most restrained classical option, suitable for modern, transitional, and minimalist interiors.
A PU smooth column is a factory-made column with a smooth shaft. The shaft is cast in the mold, so the surface is smooth and consistent. The column is the same material as a fluted PU column, with the same finish and the same install process.
The most common smooth column application is a modern interior. The smooth column is a clean architectural element that fits the modern aesthetic, with the simple cylindrical form providing visual interest without ornamentation.
A second common application is a structural column that's been dressed up with a PU smooth column sleeve. A structural column (wood or steel) is wrapped with a PU smooth column, giving the column a clean, modern appearance. The PU column is a decorative sleeve, with the structural column inside carrying the load.
A third common application is a minimalist interior. A smooth column with a simple capital and base, used as a design element in a minimalist space where the column's form is the design.
For sourcing, PU smooth columns are a stock product at most factories. The factory offers a range of standard smooth column designs (with different capital and base options) in a range of standard sizes, with quick lead times and competitive pricing. Custom designs are available on longer lead times.
A practical install note: a PU smooth column is installed the same way as any other column — assembled on site, stood in place, secured at the top and bottom, and finished. The smooth surface means that any imperfection (a slight gap, an uneven joint) is more visible than on a textured column, so the install should be precise.
A practical note on the finish. A smooth column reads best with a clean, uniform finish. A matte or eggshell paint in a single color works well; a high-gloss finish emphasizes the column's cylindrical form. The finish should be coordinated with the room's other trim, and the painter's topcoat should be applied in a single pass for a uniform appearance.
Frequently Asked Questions
Q: What are PU columns?
A: PU columns are polyurethane molded columns — typically Tuscan, Doric, Ionic, or Corinthian — that replicate carved stone or wood at a fraction of the weight. They ship in two or three halves for assembly around an internal structural post or as a hollow decorative shell.
Q: Are PU columns load-bearing?
A: Standard decorative PU columns are not structural on their own. They are designed as a 2- or 3-piece shell that wraps an internal load-bearing post (steel, wood, or reinforced concrete). For structural applications, specify "structural PU columns" with an internal steel core — these are engineered and tested to published load ratings.
Q: How tall should decorative columns be?
A: For a standard 8 ft (2.4 m) ceiling, use a 96-inch (2.4 m) column shaft plus capital and base, totaling about 100–104 inches overall. For 10 ft (3 m) ceilings, use a 120-inch shaft. Custom heights are available up to 20 ft (6 m) for atrium and lobby installations.
Q: How do you install Smooth columns?
A: Mount the base plate to the floor with anchor bolts. If structural, set a steel post first; if decorative, mount an internal PVC pipe for rigidity. Assemble the two or three PU column halves around the post, glue the seams with PU adhesive, and clamp for 30 minutes. Mount the capital and base with construction adhesive. Fill and sand the vertical seam, then paint.