Facade insulation - costs for new / old buildings at a glance

• The different variants of the facade insulation
  • The exterior insulation
  • The interior insulation
  • The core insulation
• frequently asked Questions
  • Are the investment costs worthwhile "> Making the insulation yourself?
  • Advantages of insulation?
  • Selection of insulation material?
  • Are there any funding opportunities?

The insulation of the facade is an effective way to reduce heating costs. Rising energy costs increase the need for measures of saving. However, the costs must be kept in mind when planning. The investment costs have to pay off, so that savings are actually made. Since different approaches are possible, the costs for the insulation variants must be checked in detail. This is the only way to choose the best facade insulation.

The facade insulation can be carried out in new buildings and old buildings. It can be planned directly with the house construction or attached afterwards. In both cases, it saves on heating costs. The exact cost depends on various factors such as the size of the area to be insulated. But also the type of insulation and the material used determined the costs. It is noticeable that there are large price ranges. If you decide for a specific insulation, then you must make a precise cost comparison. Through the targeted selection of materials, you can make further savings in the field of insulation. However, you must consider the effectiveness of the insulation, because not only the costs differ. The goal is not to minimize costs as much as possible, but to achieve savings. A balance between investment costs and benefits is necessary.

The different variants of the facade insulation

The facade insulation can be realized in different ways. It can be one of the following three variants:

• external insulation
• internal insulation
• Cavity wall insulation

The different procedures result in different costs, which are considered in more detail below.

The exterior insulation

If you decide on an external insulation with a thermal composite system (WVS), costs of between 90 and 150 euros per m² are incurred . Decisive for the calculation is the surface of the outer wall. The great freedom of variation in terms of insulation thicknesses and materials leads to a wide range of prices. Thus, you can influence both the insulation effect as well as the costs. The ventilated front façade costs between € 170 and € 250 per square meter. The price range results from the different construction forms in the area of ​​the substructure and from the different cladding materials. You can choose among others for wood, brick or slate.

Use combination options for cost savings
If you are planning renovation work on the facade, then you can combine the measures with the application of an external insulation. If cost points overlap, then the total savings potential results. You need to set up a scaffold for both works, so you can take the opportunity of the scaffold and have both measures carried out within the framework of a project. Plastering is another point that will be needed in both facade insulation and renovation.

The interior insulation

Compared to the external insulation, the interior insulation is cheaper because you do not have to set any scaffolding. The areas to be insulated are easier to access, which leads to lower costs. You have to reckon with costs of 60 to 100 euros per square meter.

Tip: The costs alone should not be a decision criterion for choosing the insulation. From a building physics point of view, the external insulation is an advantage. In addition, reduced by the interior insulation, the usable living space, which is to be regarded as a disadvantage.

The core insulation

The core insulation is the cheapest of the three types of insulation. It leads to costs of 15 to 30 euros per m². However, this form of insulation can not be applied in every case. To carry out the measures, a double-shell masonry must be available. Small holes are drilled in the facade, which are filled with the selected material. The holes are then closed again, so that the insulation is securely inserted and no longer visible. In addition to the low cost and the fast operation is a great advantage. Average single-family homes are therefore fully treated and insulated within 1 to 2 days.

frequently asked Questions

Worth the investment costs ">

In the case of external insulation, the amortization takes place after around 20 years . This statement means that after 20 years the investment starts to pay off. From this point on, you have offset the sum of your investments with the savings in heating costs. This information is based on average values ​​and may differ in individual cases. The own heating behavior as well as the structural features play a decisive role. By using incentives, you can reduce the time of amortization even more because the investment costs are reduced. The calculation assumed a heat saving of 20 percent.

Insulation itself "> The scaffolding should always be made by a specialist company for safety reasons. Incorrectly installed scaffolding can endanger human life or damage the façade. You may be able to offer the scaffolder to help set it up, saving you some of the cost. For the core insulation special machines are necessary, which are usually not available. Therefore, in this case, a specialized company must be commissioned.

Advantages of the insulation "> Selection of the insulation material?

The insulating material determines the costs to a high degree. However, it is not enough to opt for the cheapest option. Among other things, they must pay attention to environmental compatibility, fire protection and health aspects. The fire protection is indicated by appropriate characteristics and makes statements about how the material behaves when fire breaks out. In order to improve the fire protection, additives are often made. An example is the cellulose insulation. Here, single-grade papers are used to produce insulation material. This can be injected. The strength of the insulation can be determined individually. Since cellulose does not have good fire protection, certain additives are added to commercial products. They improve the fire protection, so it is a safe product. The insulating effect is also an important point. It describes how effective the material is. The better the material insulates, the more savings they achieve.

Existence funding opportunities ">

Tips for quick readers:

• Exterior insulation of the facade: 90 to 250 euros per m²
• Interior insulation of the facade: 60 to 100 euros per m²
• Core insulation of the facade: 15 to 30 euros per m²
• important is the period of amortization
• Environment is spared by savings
• some tasks can be done by yourself
• Scaffolding must be set up
• Safety must be considered
• Insulation variants have different effects