Plaster, what thickness should be applied when decorating the facade

Selecting the proper plaster thickness for a facade’s decoration is essential for both longevity and beauty. The type of substrate, the desired finish, and local building codes are some of the variables that affect how thick plaster is applied to a facade. Generally speaking, the thickness is between 10 and 20 mm, but it can change depending on the needs.

The state of the underlying surface is one of the main factors taken into account when calculating plaster thickness. To achieve a smooth and uniform appearance, a thicker layer of plaster might be required if the substrate is uneven or contains imperfections. Conversely, a thinner layer of plaster might be adequate if the substrate is already level and in good shape.

Plaster thickness is also influenced by the desired finish type. In order to achieve depth and detail, thicker plaster applications are frequently needed for textured finishes or decorative effects. Conversely, smooth finishes might need a thinner layer to keep their sleek appearance.

The proper plaster thickness for facades is also determined by local building codes and standards. These rules guarantee that the facade will always be stable structurally and resilient to weather and temperature fluctuations.

In conclusion, determining the appropriate plaster thickness for a facade’s decoration entails evaluating the state of the substrate, taking the intended finish into account, and following regional building codes. Homeowners and contractors can create an aesthetically beautiful, long-lasting facade that complies with regulations by carefully considering these factors.

From which the supporting wall is made

I must state up front that the ideal amount of solution must be applied, regardless of the base. A wall that is too thick might crumble or break, but one that is too thin won’t be able to conceal all of its imperfections and will let in cold air from the outside.

Brick

The walls had been built out of brick. The adhesive cement composition is laid between the bricks, giving this base a distinct relief.

Plaster can be applied in this area with a minimum thickness of 5 mm, keeping in mind that the walls are as smooth as possible. A smaller volume is just not up to the job. The maximum brick application is 5 cm; however, a pre-reinforced net must be installed. You can go up to 2.5 cm without using the grid.

Concrete

Plates made of concrete. Since this basis is already fairly level, the grabs 2–5 mm are acceptable in the absence of significant flaws. This will enable the creation of a level surface. The maximum plaster layer that can be applied using a reinforcing mesh on a wall with a strong curvature is 7 cm. Up to 2 cm is permitted when the grid is not being used.

Aerated concrete

The building blocks of aerated concrete. This material has a good, even surface and is very similar to concrete. Thus, just like in the previous iteration, a minimum of 2.5 mm is permitted for plastering. The plaster layer should not be thicker than 1.5 cm if the network has obvious drawbacks.

Tree

Wooden partitions. While the solution holds well, getting to such a surface is difficult. As a result, temporary installations of metal grids or a wood lamp (sorcerer) are made. Select cell sizes that don’t exceed 40 mm.

Such a surface is plastered in two steps. The mesh on the first must be fully hidden by the applied solution, and the surface levels on the second. In this case, the wall plaster’s thickness (at the second stage) can vary from 1.5 to 2 cm.

Insulation

If plastering the insulation is necessary, it must be done in phases. A reinforcing mesh is first inserted, after which it is concealed with a solution up to 1.5 cm, and everything is aligned up to 2 cm (less, if the preceding layer permits).

The thickness of plaster used to decorate a facade is important for both durability and aesthetics. The type of substrate, the ambient temperature, and the desired finish are some of the variables that affect the ideal thickness. In general, thicker layers conceal flaws and offer superior insulation, but improper application can also make them more prone to cracking. By striking a balance between these variables, the plaster is guaranteed to improve the facade’s look while also providing long-term weather resistance and aesthetic appeal.

How flat walls

Everything seems obvious to me at this point: the smaller the layer of solution to be applied, the more even the walls. However, it is required by all the rules to be at least 5 mm; otherwise, there would be no reason to initiate this event.

There are specific guidelines to follow if there are significant alterations to the base and thick layers are required:

• Be sure to use a reinforced net;
• At a time you can apply no more than 1.5 cm;
• If the total thickness exceeds 7 cm, then it is better to use it first with drywall, and then additionally treat the surface.

Plaster that is more than 7 centimeters thick will simply collapse under its own weight.

Plastering mixtures

Plaster made from cement-sand mixtures is the standard for decorating exterior walls. You can do it yourself because they are both finished in stores with unique additives that enhance their properties. They are suitable for use on any surface.

At the same time, you can apply a fairly thick layer thanks to good adhesion indicators. However, there are limitations in this instance. One centimeter should be the minimum thickness that can be achieved with a cement-sand mixture. Seven centimeters is permitted if a reinforced mesh is put in place.

Other compounds exist that can be applied externally as well. But keep the following in mind:

1. For a concrete base, you can never use solutions that in their composition have gypsum. Due to the interaction of concrete and gypsum, plaster can swell and crumble. The gypsum component penetrates into the depths of the concrete wall and destroys it.
2. If the first layer is applied with a gypsum composition, then a lime can not be applied on top. One of them is greatly reduced when dried, and the other, on the contrary, expands. This leads to the fact that the layer is simply lagging behind and crumble.

In these situations, the plaster layer’s thickness is irrelevant because these materials are incompatible.

The thickness of the plaster you use to decorate a facade is important for both longevity and appearance. Overly thick a layer can eventually cause cracking and other structural problems, while too thin a layer might not offer enough protection or coverage.

For a facade, a plaster thickness of 10 to 20 mm is usually ideal. This range strikes a compromise between the practical factors of application and longevity and the requirement for enough coverage to conceal flaws and provide a smooth finish.

The ideal thickness is also affected by variables like the kind of substrate, the climate, and the particulars of the plaster mix. A professional’s advice or adhering to the manufacturer’s instructions will guarantee that the appearance and durability of your facade are optimized.

In the end, the proper thickness of plaster guarantees your home’s facade resilience against weathering and structural deterioration over time, while also improving its visual appeal. Achieving the right balance guarantees your property’s long-term protection as well as aesthetic appeal.

Video on the topic

Plaster with a second layer \ Is it possible to apply a plaster to the plaster?

Plaster in a thick layer

Minimum and maximum layer of plaster