Sika LANKO® Flexible - Flexible cement adhesive for ceramics
How much stone do I need?
How much stone do I need for the ground?
For pebble and gravel:
• approximately 80kg per m², based on a 5cm layer.*For particle sizes >32mm, a thicker layer is required.
• Consumption per sack: 1000kg = 0.625m³.
• Coverage: approximately 12.5m² with a 5 cm layer.
For pine bark:
• approximately 70L per m², based on a 5cm layer.
• Consumption per sack: 1000L = approximately 1m³ = approximately 600kg
• Coverage: approximately 14m² with a 5 cm layer.
For volcanic, slate and chamotte:
• approximately 50kg per m², based on a 5cm layer.
• Consumption per sack: 1000kg = approximately 1m³
• Coverage: approximately 20m² with a 5 cm layer
How much stone do I need to fill a gabion?
Density of approximately 1,650kg per 1m³.
The calculation is very easy to understand with an example: if you have a gabion of 100x50x30 cm, you must do the following calculations:
1x0.5x0.3 = 0.15m³
0.15x1,650 = 247.50kg of stone.
*It is always a good idea to calculate an extra 5%, since when gabions are filled they expand a little and a little more stone always fits than in the theoretical calculations.
Clarifications
ATTENTION!
The grain sizes of GRAVELS AND pebbles are sieve sizes
The actual sizes may vary slightly, since when talking about, for example, 60-80mm stone, it means that the stones pass through an 80x80mm square mesh and do not pass through a 60x60mm one.
Through that 80x80 mesh, a stone 100mm long and 65mm wide can pass, so there may be a percentage of stones larger than 80 and smaller than 60mm.
Breakage of pebbles
On the other hand, in pebbles larger than 60mm, there is a percentage of up to 10% of stones that can break during sorting, washing, loading and unloading; to this day we do not have machinery that prevents such breakages.
In the photos you can see, only real products are shown; broken pieces have not been removed.
Dust and sand in the products
This product is not washed, so it contains dust, sand and even traces of other products due to processing and transport. This is not a problem when using it; the stone will wash itself over time or you can pour water on it before using it.
Sika LANKO® Flexible - Flexible cement adhesive for ceramics
Sika LANKO® Flexible – Flexible cement adhesive for ceramics
Sika LANKO® Flexible is a high-performance flexible cement adhesive, specially designed for the installation of all types of ceramic coverings both on floors and vertical surfaces, in interior and exterior. It stands out for its high adhesion, excellent workability, and performance under demanding conditions.
Classified as C2TES1 according to EN 12004-2, it guarantees a secure bond even in complex applications or on difficult substrates.
Recommended uses
LANKO® Flexible is suitable for the installation of:
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Ceramics of all kinds
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Glass mosaic and glass paste
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Natural stone
Specific applications:
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Double bonding on exterior vertical coverings for pieces > 1,600 cm²
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Double bonding on exterior floors for pieces > 2,400 cm²
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Maximum allowable weight on coverings: < 40 kg/m²
Areas of use:
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Interior and exterior floors
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Interior coverings
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Facades
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Swimming pools
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Cold storage rooms
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Floors with underfloor heating
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New flooring over old
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New tiling over old
Compatible substrates
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Concrete and mortar
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Brick
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Gypsum board
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Old ceramics
Product advantages
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Suitable for all types of ceramics
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Easy application
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Excellent workability
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High adhesion
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Flexible adhesive class C2TES1
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Slip resistance T ≤ 0.5 mm
Technical data
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Regulation: EN 12004-2:2017
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Density of fresh mortar (at +20 ºC): ~1.6 kg/l
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Layer thickness: 3 – 15 mm
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Ambient application temperature: +5 °C / +35 °C
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Substrate temperature: +5 °C / +35 °C
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Mixing ratio: 7.50 – 8.25 L of water per bag (30 – 33 %)
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Open time: ~30 minutes at +20 °C
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Mix life: Approximately 30 minutes
Indicative consumption
Consumption will depend on the substrate, the size of the piece, and the installation technique:
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Single bonding: ± 3 kg/m²
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Double bonding: ± 5 kg/m²
Preparation and mixing
Mix the product with clean water for a minimum of 3 minutes using a low-speed electric mixer (< 500 rpm).
Let the mixture rest for 5 minutes, remix for 15 seconds, and the product will be ready for application.
Do not use a concrete mixer.
Application
Apply LANKO® Flexible with a notched trowel on the substrate, selecting the appropriate tooth size according to the ceramic piece and the required thickness.
Spread a uniform layer over small surfaces, adjust with the notched trowel, and place the ceramic piece by pressing and moving perpendicular to the grooves to ensure proper adhesive transfer.
Tool cleaning
Tools and equipment must be cleaned with water immediately after use.
Hardened product can only be removed by mechanical means.