When you want to dress up your walls or ceilings with intricate three-dimensional details, custom mouldings will provide a timeless texture. In recent years, designers have made them with wood and composite foam material. While these solutions may be accessible, they don’t compare to the traditional art of plaster moulding. To better highlight how ornamental plaster can transform interiors, here’s a quick guide on how the mouldings are produced and their benefits.

What Does the Moulding Process Involve?

To begin the process, you’ll work with a plaster casting specialist who will design the exact shapes and details with which you want to adorn your walls. Once these designs are finalized, they’ll create a mold for easy and consistent replication.

plaster moldingsTo create the moulding, a wet plaster made from fiberglass and minerals—such as gypsum—is placed within the mold’s negative space. After some time, the plaster hardens and is removed. These fixtures are applied to the wall or ceiling using a quick-setting, durable adhesive.  

What Are the Benefits of Plaster Moulding?

Design Flexibility

Because plaster is applied to a mold in its elastic state, it can create any custom shape or detail. Wood and foam materials, on the other hand, must be cut using special tools.

As a result, plaster offers a greater range of design options. While wood and foam may have arched and linear details, plaster can deliver more complex and curvilinear profiles.

Balanced Acoustics

Plaster absorbs sound better than wood or foam materials. When placed strategically, plaster mouldings can accentuate sounds within the room, such as by gently increasing the volume of voices. At the same time, these sound waves will remain within the space and be less likely to disturb people in other rooms.


With proper care, plaster mouldings can last centuries. Unlike wood, this mineral-based material doesn’t expand and contract when temperatures change, which helps prevent cracking. And since it won’t absorb moisture, it can be used in humid environments without the risk of mold or rot. Plaster is also prized for its superior fire resistance.


Whether you’re aiming to restore a historic building or elevate your home’s interior design, Ionic Casting has all the resources to produce one-of-a-kind plaster mouldings. Specializing in ornamental and architectural castings, these Long Island City, NY, artisans will craft exquisite mouldings to add texture to your walls and ceilings. They’ll also manage the installation process to ensure a precise and durable application. To learn more about their services, visit them online. To start planning your project with a specialist, call (718) 786-7670.