Half-timbered houses are valuable contemporary witnesses to historical architecture. However, their traditional construction methods often do not meet today's energy requirements.
The good news: with our innovative insulating plaster system, historic facades can be carefully renovated without endangering the original building fabric. This allows you to preserve the unique character of your half-timbered house and benefit from modern energy efficiency at the same time.
Half-timbered houses are architectural treasures with sensitive constructions that place special demands on thermal insulation. Conventional insulation methods can quickly lead to damage. The biggest challenges are:
Moisture problems: Incorrect insulation can promote moisture damage and mold growth.
Diffusion openness: This construction method requires materials with low resistance to vapor and humidity.
Historic appearance: Visible beams and structures should be preserved and remain visible.
In order to receive state subsidies, legally regulated minimum technical requirements must be met. These depend on the type of insulation:
Internal insulation: The required U-value depends on the specific wall structure and must be adjusted to ensure effective thermal insulation.
External insulation: Stricter regulations apply, as the aim here is to achieve maximum energy savings. The aim is to minimize heat loss and contribute to energy efficiency in the long term.
Listed buildings: Lower U-value requirements apply here in order to preserve the historical substance. These more flexible requirements make it possible to preserve the character of the building and take advantage of funding opportunities at the same time.
Information on the Building Energy Act
| Remediation measures | Component | Maximum U-value in W/(m²K) | |
|---|---|---|---|
| 1.1 | Thermal insulation of walls | Exterior wall | 0,20 |
| 1.2 | Thermal insulation of walls | Core insulation for double-shell masonry | Thermal conductivity λ ≤ 0,035 W/(mK) |
| 1.3 | Thermal insulation of walls | Exterior walls of listed buildings and buildings worthy of preservation | 0,45 |
| 1.4 | Thermal insulation of walls | Interior insulation of half-timbered exterior walls and renovation of the infill | 0,65 |
OUR SOLUTION: MINERAL INSULATING PLASTER - HASIT 242 CALCECLIMA® THERM
Our specially developed, purely mineral insulating render HASIT 242 CALCECLIMA® THERMO combines all the requirements for sustainable, energy-efficient renovation and at the same time provides effective insulation for half-timbered houses. The historical substance is preserved without impairing the appearance.
Advantages at a glance:
Open to diffusion: Allows moisture to escape and thus prevents mold growth.
High thermal insulation: Provides optimum thermal insulation and meets the requirements of the modern energy transition.
Adaptable: Adapts flexibly to different substrates.
Aesthetic: Preserves the historic appearance of the façade without compromising on insulation performance.
Suitable for listed buildings: Also approved for listed buildings, so you can protect the substance and benefit from subsidies at the same time.
For any substrate: Flexible adaptation to different, even uneven substrates - ideal for a wide variety of building types.
Can be freely modeled: Enables an individual surface design to suit the requirements of the façade.
Single-layer application: Application thicknesses of 20 to 60 mm in one layer are possible, making application simple and efficient.
To the HASIT 242 CalceClima® Thermo product page
| Variants | U-VALUE | Layer thickness Product 242 |
|---|---|---|
| Variant 1 - inside only | U-value: 0,632 W(m2K) | 50 mm |
| Variant 2 - outside and inside | U-value: 0,624 W(m2K) | 30 mm bzw. 25 mm |
| Variant 3 - outside only | U-value: 0,441 W(m2K) | 80 mm |
| Variant 4 - outside only | U-value: 0,885 W(m2K) | 30 mm |
With our experienced team of experts, we have already successfully renovated half-timbered houses and optimized their energy efficiency. Thanks to our specially developed products and our extensive expertise, we ensure that refurbishments are carried out in line with the requirements of listed buildings, improving both the historical character and energy efficiency in the long term.
One outstanding example is our reference of a historic Art Nouveau villa that we renovated to make it more energy efficient. The result: an impressive reduction in heating requirements thanks to the energy-efficient renovation with insulating plaster - WITHOUT changing the unique, historic appearance.
We are always there for you when it comes to answering your questions about our products, their processing and many other topics. Our team of experts will support you with valuable information, practical tips and individual solutions.
To help you with this, we have collected the most frequently asked questions about our insulating plasters and all aspects of half-timbered houses and summarized them clearly for you.
Yes, our system has already been used successfully in many listed buildings. The diffusion-open property meets the requirements of monument protection.
Yes, the surface can be individually colored or plastered so that it blends harmoniously into the overall picture.
The thickness depends on the energy objectives and the nature of the wall. As a rule, we recommend 3 to 6 cm.
