MAPEI Mapelight Thermo lightweight insulating screed 50l (16kg)

MAPEI Mapelight Thermo 50 l (approx. 16 kg) – thermal insulating lightweight leveling compound

Mapelight Thermo is a ready-to-use, cementitious lightweight leveling mortar with thermal insulating properties for interior use. It levels out unevenness, conduits, and pipes on unfinished floors in layer thicknesses from 20 to 300 mm – with a very low weight of approx. 400 kg/m³.

Due to its low thermal conductivity (λ = 0.10 W/mK), the leveling layer also contributes to thermal insulation. Work can continue on it after 24 hours.

Scope of delivery: 50 l bag (approx. 16 kg).

Advantages of Mapelight Thermo

• Very lightweight – only approx. 400 kg/m³ dry bulk density
• Thermal insulating (λ = 0.10 W/mK)
• Layer thicknesses from 20 to 300 mm
• Walkable after approx. 12 hours, ready for further work after approx. 24 hours
• Factory-mixed – just add water
• Flame-retardant (A2-s1)

Typical areas of application

• Leveling of unfinished floors before screeding
• Covering of conduits and pipes on the floor
• Weight-saving leveling layers in old buildings and renovation projects
• Height adjustment under floating screeds and dry screeds
• For interior use only

Technical data

• Mixing water: 4.5–5 l per 50 l bag
• Layer thickness: 20 to 300 mm (min. 20 mm bonded or on a separating layer, min. 30 mm on insulation)
• Dry bulk density: approx. 400 kg/m³
• Thermal conductivity: λ = 0.10 W/mK
• Walkable: after approx. 12 hours
• Ready for further covering: after approx. 24 hours
• Max. field size: 40 m²
• Application temperature: +15 °C to +30 °C
• Fire behavior: A2-s1

Consumption

Consumption is approx. 3.2 kg/m² per cm of layer thickness. One bag (approx. 16 kg) is therefore sufficient for approx. 5 m² at 1 cm or approx. 1 m² at 5 cm layer thickness.

Application of Mapelight Thermo

1. Prepare the substrate

The substrate must be load-bearing, clean, and free of loose particles. Attach edge insulation strips to all rising components, e.g., MAPEI Mapestrip Perimeter.

2. Mixing

Add 4.5–5 l of water and mix the bag contents homogeneously using a forced-action mixer or a low-speed agitator.

3. Installation and leveling

Apply the material, compact it, and level it to the desired height using gauges and a leveling rod. Create fields of a maximum of 40 m².

4. Further work

Walkable after approx. 12 hours. Mapelight Thermo is not a final wear layer: A further layer must be applied after approx. 24 hours – e.g., a screed or a leveling compound such as MAPEI Ultraplan Maxi. In a system configuration, a load of 4 kN point load or 4 kN/m² is possible according to the manufacturer.

Note: All information is taken from the technical data sheet of the manufacturer MAPEI. Please consult the current product and safety data sheet before use, which you can download at the bottom of this page.