ARMASIL T – Silicone render
To be used as manually applied thin coat renders for external use and finish coat for KABE THERM RENO and KABE THERM ELASTO* EWI system based on EPS, and KABE THERM MW* EWI system based on mineral wool and ARMASIL RSA anti-cracking system for building renovation. It can be used for new build and retrofit on both mineral substrates (e.g concrete, cement render and cement-lime render) and on synthetic substrates covered with well set polymer-based coatings. Highly recommended where enhanced dirt resistance is required and for systems based on porous substrate materials (e.g.: cellular concrete, cinder blocks, porous brick). Suitable for buildings located close to roads and industrial areas. Due to its chemical formulation — once the surface has been sprayed with water, a ‘droplet’ effect can be observed. It means that water absorption is greatly reduced and the facade is protected against dirt/dust due to its self-cleaning properties. The substrate should be primed with ARMASIL GT before applying the render.
*) If a product of EWI system is used, the manufacturer provides a guarantee only when all KABE THERM RENO, KABE THERM ELASTO or KABE THERM MW system components are applied.
| Base binder: | silicone binder; |
| Pigments: | non-organic coloured pigments resistant to atmospheric conditions; |
| Colours: | natural white, colours from the KABE colour chart and selected NCS colours (can be obtained by adding non-organic pigments); |
| Textures: | solid/grained, modelled and smooth texture (texture made up of 2 renders: of solid/grained texture with the thickness of 1.5 mm and modelled texture); |
| Grain size: | 1.0 mm; 1.5 mm; 2.0 mm; 2.5 mm; 3.0 mm; |
| Temperature of application (air and substrate): | from +5°C to +25°C; |
| Relative humidity: | ≤75%; |
| Vapour permeability: | Sd=0.30 m (cat. V2); |
| Water absorption: | W=0.09 kg/m2∙h0.5 (cat. W3); |
| Packaging: | Single-use plastic packaging of 25 kg. |
| Storage: | The product should be stored in its original sealed packaging in a cool frost-protected room. Opened packaging should be tightly closed and used as quickly as possible. |
| Shelf life: | Originally sealed products have a 12-month shelf life from the date of production (this is printed on the side of the packaging). |
• Top resistance to adverse atmospheric conditions
• Very low surface absorption
• High dirt resistance
• Good vapour permeability
• Additional anti-fungal and algae protection
• High adhesion to both mineral and synthetic substrates
SUBSTRATE PREPARATION: Apply to a sound/stable and clean substrate (without cracks and delaminations), degreased, even and dry, and biological or chemical efflorescence free. The substrate should be free of algae/fungi growth. In case of microbial contamination, the substrate should be cleaned mechanically and then wash with water and disinfect with ALGIZID. Any loose layers not bound to the substrate (i.e. loose renders or flaked coatings) should be removed. Old and/or dirty substrates should be washed off and degreased with water and CLEANFORCE cleaning agent. For uneven substrates, first use levelling compound and then level out the surface at once with the finish levelling and smoothing compound. Small unevenness can be smoothened with the finish levelling and smoothing compound. Use the above products according to their technical data sheets. Absorbent substrates should be primed before levelling compound and/or spackling paste application. If the render is applied on new mineral substrates (i.e. concrete, cement render, cement-lime render) – a min. 4-week curing period is required. Prior to using silicone render in KABE THERM RENO, KABE THERM ELASTO or KABE THERM MW, EWI systems, all coats of EWI systems should be applied in accordance with the requirements for external thermal insulation composite system (ETICS). Before applying the silicone finish coat, the primed reinforcing coat has to be fully cured. This can take 3-4 days in typical weather conditions.
PRIMING: The substrate should be primed with ARMASIL GT before applying the render. Primer should be dry before applying a finish coat , curing period lasts about 24 hours. Render can be applied when the primer is completely dry. To reduce the risk of the substrate colour showing through the top coat, it is recommended to use a primer that is of the same colour as the render.
PRODUCT PREPARATION: The packaging contains a ready-to-use product. If stored for a long time and before application, the product should be thoroughly mixed with a low-speed mixer fitted with a basket stirrer until a smooth,
homogenous consistency is obtained. Further mixing is not recommended as it may result in excessive aeration of the product. If required, add a small amount of drinking water (max. 0.25 l per 25 kg of the product). Quantity of added water may vary depending on the substrate type, drying conditions and application method.
APPLICATION METHOD: Using a stainless steel trowel, apply a thin, uniformed quantity of the product to the substrate. The thickness of the coat should be equal to the grain size. To create texture rub the surface with a plastic trowel with circular motions. The modelled texture render should be applied using a stainless steel trowel (1-5 mm thick). To achieve the required texture, next use a paint roller, trowel or sponge. A smooth top coat should be applied in two stages. Stage one: first apply solid/grained texture top coat. Stage two: once the previous coat is dry, apply the modelled texture render. Modelled render should be rubbed with a circular motions to achieve an even surface.
DRYING: Typical drying time ca. 24 h (20°C, 55% RH). Note: Drying time may be longer, up to several days due to low temperatures and high relative humidity. To assist the drying of the finish coat, the surface should be protected against precipitation and condensation.
USEFUL HINTS: The final effect may depend on the substrate type. For non-uniform substrates, it is recommended to apply at first the whole surface with KOMBI base coat. To avoid colour differences, a single batch product should be used on a single application / architectural element. ‘Wet on wet’ method should be used. All tools should be cleaned with water after work is completed. To be applied on dry days at temperatures between 5-25°C. Avoid applying in direct sunlight or during strong winds. To protect the fresh coat against inclement weather conditions, scaffolding should be covered with some protective netting or tarpaulin.
ARMASIL T TDS
