Binders and silicone resins for external thermal insulation composite system (ETICS) applications
Modern external thermal insulation composite systems are multilayer composite materials consisting of insulation panels, mortar, fiberglass mesh, plaster and a coating. Factors that determine ETICS longevity and functionality are the mortars, renders and paints used.
An external thermal insulation composite system (ETICS) is under constant strain: temperature fluctuations, moisture and mechanical influences can compromise its insulating properties and even damage the system as a whole. Powerful adhesive mortars and base coats are key tools for meeting these challenges, as are durable renders and paints.
For construction material manufacturers and producers of paints and renders, our polymeric binders and innovative silicone resins offer solutions for making external thermal insulation composite systems tougher and longer lasting. That results in robust, energy-efficient systems that reduce heating and cooling costs and improve buildings’ carbon footprint.
External thermal insulation composite systems – challenges and solutions
Typical challenges:
This animated video demonstrates how polymeric binders improve the adhesion, flexibility and impact resistance of the cement matrix of an adhesive mortar or base coat.
Our solution:
VINNAPAS® polymeric binders ensure excellent adhesion in adhesive mortars and base coats, lending them the flexibility they need to offset the stress caused by temperature changes. The outstanding elasticity and impact resistance of VINNAPAS® formulations provide external thermal insulation composite systems with lasting protection from mechanical stress and reduce crack formation.
SILRES® BS silicone resins allow manufacturers to create water-repellent, vapor-permeable exterior paints that keep moisture at bay without compromising breathability.
Dispersible polymer powders for 1K adhesive mortars and base coats
VINNAPAS® polymer dispersible powders enable good adhesion between all substrates and cementitious, one-component (1K) adhesive mortars and base coats. They are flexible enough to accommodate materials with different expansion coefficients, their storage stability is ideal, and they last a long time.
VINNAPAS® grades based on vinyl acetate-ethylene (VAE) are particularly suitable for formulating 1K adhesive mortars and base coats:
Y-axis: Impact resistance (in joules) at 23 °C, stored for 28 days under standard climatic conditions (23 °C, 50% relative humidity) – commercial formulation
Product properties
Dispersible polymer powders for formulating 1-component (1K) adhesive mortars and base coats.
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Product properties
Dispersible polymer powders for formulating 1-component (1K) adhesive mortars and base coats.
Advantages:
Applications:
Polymer dispersions for 2K adhesive mortars and base coats
VINNAPAS® polymer dispersions improve adhesion in 2-component (2K) adhesive mortars and base coats on all substrates. Their outstanding flexibility allows them to offset the different coefficients of thermal expansion of the materials used.
Grades based on vinyl acetate-ethylene (VAE) are particularly suitable for formulating 2K adhesive mortars and base coats:
Product properties
Polymer dispersions for formulating 2-component (2K) adhesive mortars and base coats
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Dispersions for ready-to-use 1K adhesive mortars and base coats
VINNAPAS® polymer dispersions are also suitable for formulating cement-free, 1-component (1K) adhesive mortars and base coats, which are produced in the form of ready-to-use pastes. VINNAPAS® polymer dispersions improve adhesion on all substrates and enhance flexibility and impact resistance. Ready-to-use formulations prevent mixing errors on construction sites.
Product properties
Polymer dispersions for formulating ready-to-use, cement-free, 1-component (1K) adhesive mortars and base coats in paste form.
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Dispersions, dispersible polymer powders and silicone resins for renders and exterior paints
VINNAPAS® polymer dispersions and dispersible polymer powders allow manufacturers to optimize renders in terms of their protective effects and more. VINNAPAS® H grades, for example, improve the hydrophobicity and weathering resistance of the finishing plaster.
SILRES® BS silicone resins make it possible to formulate exterior paints that combine high water-vapor permeability and low water absorption and that make facades more energy efficient.
Product properties
Polymer dispersions, dispersible polymer powders and silicone resins for formulating renders and exterior paints
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Applications:
ETICS FAQs
Why are polymeric binders used in external thermal insulation composite systems?
Polymeric binders like VINNAPAS® dispersible polymer powders and dispersions improve the adhesion, flexibility and impact resistance of adhesive mortars and base coats in ETICS applications, where they deliver longevity and resistance to moisture, temperature changes and mechanical stress.
Which VINNAPAS® product classes are available for ETICS applications?
WACKER offers three VINNAPAS® product classes for ETICS applications:
What advantages do SILRES® BS silicone resins confer in external thermal insulation composite systems?
SILRES® BS silicone resins allow manufacturers to formulate weather-resistant exterior paints that combine considerable water-vapor permeability with exceptionally low water absorption. This kind of silicone resin emulsion paint (SREP®) serves as an ideal finishing plaster for external thermal insulation composite systems: it keeps facades dry, does not compromise insulating capacity and improves the potential energy savings of an ETICS over the long term.
Brochures
VINNAPAS® | Construction with External Thermal Insulation Composite Systems
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