About erstotherm
Energy-efficient thermal protection coating
erstotherm is a thermofunctional interior and specialist coating based on vacuum-filled ceramic particles.
It was developed to:
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to increase surface temperatures
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To mitigate thermal bridges
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To reduce condensation and thus the risk of mould
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To noticeably improve room comfort
The coating forms an elastic, vapour-permeable functional layer that supports moisture regulation and thermal performance.
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Operating principle
How does erstotherm work?
1. Vacuum ceramic microstructure
The functional particles included are:
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They contribute to the thermofunctional properties of the coating
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support the management of thermal radiation at the surface
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reduce local heat losses
Depending on the substrate, wall construction, layer thickness and ambient conditions, the coating can contribute to an increase in surface temperature, particularly on thermally critical building components.
2. Temperature buffering
The coating reacts quickly to temperature changes and buffers against cold and heat effects.
3. Condensate reduction
Higher wall surface temperatures result in:
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Reduces the risk of surface temperatures falling below the dew point
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Supports the reduction of condensation
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Can reduce condensation-related mould risk
4. Diffusion-open moisture control
erstotherm is permeable to water vapour and supports a vapour-permeable system build-up.
Features and benefits
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Increase in wall surface temperatures
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Supports the reduction of condensation and surface moisture
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Supports the reduction of condensation-related mould risk
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Improved thermal comfort
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Vapour-permeable and open to water-vapour diffusion
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durable, elastic, crack-bridging
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solvent-free, low-emission
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Can be combined with suitable ERST systems
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Can contribute to improved thermal comfort and a more balanced perception of surface temperatures
Downloads
Product brochure
Technical data sheet erstotherm
Areas of application
Residential & Private Properties
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Living and sleeping areas
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children’s rooms
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Basement rooms, stairwells
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Garages, attics
Trade & Industry
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Storage and production areas
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Medical practices and hygiene areas
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Cold stores and comparable temperature-critical areas
Typical problem areas
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Interior surfaces of external walls
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thermal bridges
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Rooms with ventilation deficiencies
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Areas with condensation
Key technical data
Parameters
Binder system
technology
Diffusion-open
Odor/Solvent
Value
Special dispersion
Vacuum-ceramic microcavities
Yes
Solvent-free, low-emission
Parameters
Area of application
processing
effect
Value
Indoors, selected outdoor areas
Brush, roller or spray application
Temperature increase & condensation reduction
FAQ
Frequently Asked Questions About erstotherm
Does erstotherm replace thermal insulation?
No, erstotherm is a thermofunctional coating, not thermal insulation as defined by the GEG. It is a thermofunctional coating designed to influence surface temperatures locally.
How much does the wall surface temperature increase?
The achievable effect depends on the substrate, wall construction, layer thickness and ambient conditions. Surface temperatures can increase under suitable conditions; the actual change is project-specific.
Can erstotherm help reduce the risk of mould growth?
By supporting higher surface temperatures and reducing the risk of condensation, erstotherm can help reduce condensation-related mould risk. It does not replace the treatment of existing mould contamination or measures addressing the underlying cause.
How does the effect feel subjectively?
Rooms appear "warmer" and more balanced because temperature differences on surfaces are reduced.
Can erstotherm be used outdoors?
Only in coordinated system setups and with separate approval.
