kartonpiyer

Kartonpiyer is a decorative interior molding made from a gypsum-based core reinforced with paper, shaped into cornices, moldings, friezes and ceiling borders. The name literally reflects its paper backing, though the finished pieces are rigid and durable. Profiles range from simple edges to ornate cornices and medallions, and are sold in sections that can be cut to length on site.

Installation is straightforward: pieces are fixed to walls or ceilings with gypsum-based adhesive and, if needed, light mechanical fasteners. Joints between pieces are filled with joint compound or plaster, sanded smooth, primed and painted. The material is lighter and easier to handle than traditional plaster, allowing for quicker installation and repair by skilled workers or capable DIYers.

Advantages include reduced weight, faster installation, lower cost, and ease of maintenance. Kartonpiyer is widely used in Turkey and parts of Europe for interior decoration, offering a broad range of profiles suitable for various architectural styles. It can be painted to match or contrast with surrounding surfaces and is generally compatible with standard wall finishes.

Limitations involve sensitivity to moisture; prolonged exposure to damp environments can cause sagging, warping or damage to the paper backing, making it unsuitable for bathrooms or other humid areas. Repairs can be more involved than with solid plaster, especially if moisture has affected underlying substrates.

Historically, kartonpiyer developed as a plaster-alternative option in the 20th century and remains a popular choice for lightweight, decorative interior moldings in modern construction and renovation projects.