Leca® Uno Pre-Mixed Concrete (25L Bags)

Leca® Uno (15-17kg/ 25L Bag)  for filling and leveling interior and exterior floors, applied in a single layer - increasing thermal and acoustic improvement of floors. 

Suitable for application in new construction and rehabilitation works, in thicknesses from 4 cm (minimum thickness).

Mix Leca® Uno with water (5 litres/bag) to obtain a homogeneous mixture with a shiny appearance. 

• If you use a continuous mixer, the amount of water must be adjusted to the type of machine.
• Spread the material across the entire area to be filled.
• Level to the desired thickness using a level and regularize with a manual or electric trowel.
• Keep the material moist for the first few hours and create retraction joints, if necessary.
• After drying (24 hours), the material is ready to be covered with ceramic material, natural stone or floating flooring or screed.
• Coverage/ 2 x 25Ltr bag Yield: 50mm thickness cover/ m2

• Compressive strength 28 days: 7,4 ± 0,6 N/mm2 (7,4 ± 0,6 MPa)
• Flexural strength 28 days: 2,3 ± 0,6 N/mm2 (2,3 ± 0,6 MPa)
• Fire behaviour: non-combustible (Class A1)
• Hardened density: 826 ± 2 Kg/m³
• Thermal conductivity (according to EN 1745-2002), ʎ10,dry = 0.30 - 0.32 W/mK
• Thermal conductivity of the hardened mixture and dry: ʎ10, seco = 0,2768 W/m.ºC
• Thermal resistance of the hardened and dried mixture: R = 0,19 m2.ºC/W
• Sound insulation index for air conduction sounds Rw (range: Rw ≤ 72 dB) for 5 cm filling (there are results for 10 and 20 cm fillings; consult Leca UK): - Rw, without reinforcement (C100-3150; Ctr 100-3150; C100-5000; Ctr 100-5000) = 52 (-1;-5;0;-5) dB - Rw, with reinforcement (C100-3150; Ctr 100-3150; C100-5000; Ctr 100-5000) = 55 (-1;-3;0;-3) dB
• Reduction in the transmission of percussion sounds ΔLw (range: ΔLw ≤ 50 dB) for 5 cm filling (there are results for 10 and 20 cm fillings; consult Leca UK): ΔLw (CI,Δ) = 8 (-2) dB
• Coverage/ 2 x 25Ltr bag Yield: 50mm thickness cover/ m2

Note: these results were obtained in laboratory tests and may vary depending on application conditions.

Lightweight concrete applied in a single layer. 

Thermal and acoustic improvement of floors. 
Suitable for application in new construction and rehabilitation works.

• Allow for 24 hours to set before pedestrian surface mobility. 
• Use the contents of each bag at once.

Applied  in thicknesses from 4 cm (minimum thickness)

1. natural stone
2. floating flooring. 
3. linoleum, vinyl, laminates
    

The 25 litre bags weigh 15kg-17kg and are easily portable. There’s no mess, no need for heavy machinery, no heavy lifting and no waste.