Plaster moldings: what it is, types, how to use it and tips

Plaster moldings: what it is, types, how to use it and tips

In interior environments, good finishes are essential, after all, these are what provide spaces with sophistication, style and collaborate for a longer and better lifespan of the materials that make up the environment.

In addition to choosing quality frames, flooring, and painting, it is important to pay attention to the union between materials and corners of the space. For this, plaster moldings are a key element, giving that final touch to the environment, making it more elegant and well-finished.

What are plaster moldings?

Plaster moldings are prefabricated elements, purchased ready-made, made of plaster, which are used to cover the encounters, as is the case with the moldings to cover the corner between ceiling and walls, as merely decorative, used on surfaces, both on walls and ceilings, and also around doors and windows.

Crafted plaster molding.

Crafted plaster molding.

They are a decorative element widely used for a long time, which is currently becoming a trend, resuming the classic style in the environments.

Ceiling plaster moldings

The plaster moldings for ceilings are called skirting boards, which have a similar function to the skirting board, finishing against two perpendicular surfaces, in this case, wall and ceiling.

Types of plaster frame.

Types of plaster frames.

Currently, it is possible to find on the market a wide variety of ceiling moldings, ranging from the thinnest and simplest to the thickest, with straight and curved lines, in a variety of styles.

How to Choose Plaster Ceiling Moldings

Due to the wide variety of plasterboard moldings for ceilings, it can be difficult to choose which one is most suitable for each environment.

To help you decide, there are some important factors to consider, such as the size and style of the space in question.

Environment with simple and geometric ceiling frame. Room with simple and geometric plaster ceiling frame.

For larger and more sophisticated environments, such as living and dining rooms, you may prefer a more important plaster frame. Thus, in addition to being proportional to the space, it offers it sophistication and seriousness.

On the contrary, a thin frame in a room that is too large can even be quite awkward, due to the disproportion.

In smaller environments, such as bathrooms and kitchens, simpler and thinner plaster ceiling moldings are used. Thus, the environment has the finishing touch, but without being exaggerated or heavy.

Environment with decorated frame.

An environment with a decorated plaster frame.

The style of the plaster frame, between orthogonal and more decorative, can follow the decoration of the space; in minimalist environments, for example, opt for simple frames, with few lines and straight lines; in spaces with classic decor, the curved and more decorated frames match very well.

But of course, it’s always good to remember that, as your home decor, you, your personality, and your style rule, and there is no right and wrong rule about that. Trust your style and choose the frame that suits you best.

How to apply?

Once you have chosen the plaster molding model for the ceiling, purchased the necessary quantity, it is time to apply. For this, the ideal is that it should be done by a professional in the area.

The application of plaster moldings for roofing panels must be done with precision and attention, and to be perfect and avoid problems in the future, it is important to know some precautions:

  • At the time of application, the plaster must be damp, so buy it on the day of placement or, at most, the day before.
  • Before applying the frame, scrape the back and sides to remove a thin layer that manufacturers apply to prevent the plaster from sticking.

Apply plaster to the sides of the frame and apply it gently to the wall. Carefully press and remove excess plaster.

With the frames in place and the plaster dry, paint the room, which will probably have been a little stained with plaster on the edges of the frame.

Plaster wall framing

Calls boiserie, the plaster moldings to the wall are a decorative element rather old, used since the Baroque palaces such as Versailles, which has been widely used today.

The resumption of this element in interior decoration is a reflection of the classic style trend, now with a more contemporary look.

Environment with plaster molding on the ceiling and walls.

The framed environment on the ceiling and walls.

Wall moldings are usually thinner than the ceiling, placed to form rectangles or squares in a modular way, on walls of environments such as rooms and hallways.

Want to know more about boiserie? We created complete content about this element, check it out!

Plaster molding

Crown molding is a plaster modeling method, which shapes the ceiling of an environment or a sector of it, made at the junction between the wall and the ceiling of the space.

Unlike moldings, plaster moldings are made-to-measure, in loco, and, in addition to aesthetics, they can also have a function in space, such as covering electrical installations and air conditioning pipes.

Plaster moldings are also widely used to light spaces, indirectly and homogeneously.

Serralves Museum exhibition room, designed by architect Álvaro Siza. Photo by the author, Victoria Baggio.

Serralves Museum exhibition room, designed by architect Álvaro Siza. Photo by the author, Victoria Baggio.

Portuguese architect Álvaro Siza constantly uses plaster moldings in his public and cultural works.

In this case, the bastards serve as an instrument to achieve indirect artificial lighting, well-distributed throughout the environment.

The type of crown molding most used by architect Siza is the open perimeter, which has an opening in the central part, where a lighting system with plateaus is installed, with the objective of illuminating the environment in an abundant and indirect way, which often seems a zenithal opening, of natural light.