Sikatherm®-611 Render
Sikatherm®-611 Render is an insulating system designed for external facades of houses, buildings, or other structures as well as internal partitions or ceilings. It is applied in the same way as a wall plaster onto exterior and interior surfaces manually with hand trowelling tools and/or machine.
- Lightweight, density approx. 200 kg/m³
- Excellent thermal insulation
- Good acoustic insulation
- Fire-resistant
- Water repellent to avoid loss of insultion properties after rain
Usage
- Suitable for both internal and external wall application.
- Compatible with commonly used tile adhesives and waterproof membranes.
Advantages
- Lightweight, density approx. 200 kg/m³
- Excellent thermal insulation
- Good acoustic insulation
- Fire-resistant
- Water repellent to avoid loss of insultion properties after rain
Packaging
15 Kg
Product Details
Chemical Base
1 bag of 15 kg Sikatherm®-611 Render, 100 litre of Crushed EPS Beads (0 - 4mm) density of 1.2 kg/100 litre
Shelf Life
12 months from manufacture date
Storage Conditions
Store properly in original, unopened and undamaged sealed packaging in dry conditions at temperatures between +5 °C and +30 °C. Protect from direct sunlight.
Density
170 kg/m3 ~ 200 kg/m3 (Dry)
Thermal Conductivity
≤ 0.065 W/(m.K)
Application
Ambient Air Temperature
+6 ºC min / +40 ºC max.
Mixing Ratio
| Material | Weight |
| Sikatherm®-611 Render | 15 kg |
| Crushed EPS Beads (0-4mm) | 100 ltr |
| Water | 15 - 17 ltr |
| Total Yield | Approx. 100 ltr 100mm thick per sqm |
Substrate Temperature
+6 ºC min / +40 ºC max.
Pot Life
60 - 120 min (depending on ambient conditions)
MIXING
- Drum mixer with a minimum capacity of 150ltr is required for mixing.
- Pour the required amount of clean water into the mixing drum.
- Pour in the required Sikatherm®-611 Render into the drum while mixing.
- Mix for 2-3 minutes, until a homogenous slurry is obtained.
- Lastly, add in the required crushed EPS Beads and continue mixing for 5-15 minutes until clumps are eliminated and a smooth consistency of mortar is achieved.
APPLICATION
Primer
Prime with a slurry scratch coat/key coat by mixing Davco 751 with cement and fine sand at 1:1:1 ratio.
Apply a thin coat to form key coat and leave it to dry before applying subsequent layers of plaster.
By hand
The material from the bucket or wheelbarrow is applied with a masonry spatula/trowel directly to the wall surface by throwing and not pressing too hard like conventional plaster. The applied material is smoothed with a long aluminium slat. Leave the prepared surface to dry.
First, spread a thin (approximately 3-4 mm) contact layer to serve as an adhesive bridge. In this way, the surface will be cleaned of dust. Leave this thin layer to dry before applying next layer. Continue to apply Sikatherm®-611 Render in maximum layers of 4-5cm until the desired thickness is reached. Necessary hardening time between layer applications must be observed. Depending on weather conditions, setting may take 6 to 24 hours.
By plastering machine
The pre-mixed material is poured into the tank of the plastering machine. First, spread a thin (approximately 3-4 mm) contact layer. Additional layers are sprayed after drying, typically the next day or 6-24 hours depending on weather conditions, whereby maximum layer of 4-5 cm is advised per one layer. The last layer is finished with a foam smoothener in crinkle direction. This process provides a hard and completely smooth surface. Leave the prepared surface to dry.
Smoothening of the Surface and Final layers
The final stage is to level and smooth the surface, but this can only be done when the material has hardened. Hardening time may take approx. 24 to 72 hours, depending on weather conditions. For any surface unevenness, sandpaper can be used to level the surface if necessary.
For protective or final layer: Apply a layer of SikaWall®-178 if necessary. Sika/ Davco Waterproofing products can be added if needed. Such additional layers can be applied after the final layers have been cured for 7 days.
CLEANING OF TOOLS
- Clean mixing and application equipment with water immediately following use.
- Remove splatter or spills with water before material sets.