Cement-based levelling adhesive in powder form, comprising selected mineral aggregates, EPS beads and additives. For bonding and levelling EPS insulation panels, MW rock wool and polyisocyanurate (polyiso) foam panels coated with PIR glass fibre mesh.
Application areas
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A levelling adhesive based on hydraulic binders and lightweight aggregates consisting of EPS beads, with a particle size of 1.2 mm. For bonding and levelling insulation boards, for levelling uneven surfaces both indoors and outdoors, and for levelling plaster. It offers high coverage and can be applied in a thick layer. It can be applied to: insulation boards (EPS, MW, PIR, etc.), lime-cement renders, concrete and other mineral substrates.
Preparation for laying
The substrate must be dry, not frozen, free from dust and efflorescence, not water-repellent and sound.
Product preparation
Mix Mastofix Light with approximately 6–6.25 litres of clean water per 20 kg bag in a clean container and stir continuously using a slow-speed mortar mixer (max. 500 rpm) until the mixture is homogeneous, then leave to rest for approximately 5 minutes. Stir again and, if necessary, adjust the consistency with a small amount of water. Do not add any other substances to the product.
Installation instructions
Bonding of insulation boards: apply the adhesive using the dot-and-dash method (bonding area approx. 40 per cent). Stripe width approx. 5 cm, height approx. 2 cm. Skimming of insulation panels: apply the skim coat approx. 2–3 days after bonding (depending on weather conditions; additional anchoring may be required) to a minimum thickness of 5 mm, then spread with a suitable T 16 notched trowel. Embed the SSA reinforcement mesh into the skim coat (outer third); at joints, overlap by at least 10 cm and cover it completely with the trowel. Once the skim coat is completely dry (up to 7 days depending on weather conditions), the suitable Torggler eTics wall coating can be applied. The pot life of the mixture is approximately 4 hours. Any material left in open containers must not be reused or mixed with fresh material. During application and drying, the temperature of the surrounding environment and the substrate must not fall below +5 °C. Until completely dry, protect from frost, excessive drying (direct sunlight, wind) and subsequent damp (rain). Insulation panels for skirting, coated with a system-specific adhesive and levelling compound and wall covering, must be waterproofed with Torggler Flex 1K or Flexistar in the area below ground level, extending approximately 10 cm below the lower edge of the skim coat and up to a maximum of 5 cm above ground level (finished with a skirting profile). The relevant national regulations must be observed in all cases.
See the information on the packaging in accordance with Directive 2003/53/EC. Store Mastofix Light in a dry, sheltered place. It will keep for at least 12 months in its original, unopened bags. Keep away from moisture.
In caso di utilizzo di tonalità con FR<25% consultare l’assistenza tecnica Torggler.
| Color | Code | Packaging | Packaging size | Pallet | Barcode |
|---|---|---|---|---|---|
| White | 8325 | bag | 20kg |
50 bags
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Mastofix Light It is suitable for:
| PARAMETERS | VALUES |
| Appearance | White powder containing EPS beads |
| Mixing water | 30% (6.00–6.25 l per 20 kg bag) |
| Particle size | 1.2 mm |
| Working time | 2 hours (T: 23 ⁰C; RH 50%) |
| Adhesion to concrete | 0.9 N/mm² |
| Adhesion to polystyrene | 0.08 N/mm² |
| Adhesive consumption | 3–4 kg |
| Smoothing consumption | 5–5.5 kg |
| Density (cured) (kg/m³) | approx. 1200 |
| Specific heat capacity Cp (J/(kg·K)) | approx. 1000 |
| Vapour permeability µ | 20 |
| Thermal conductivity λ10, dry (EN 1745:2012) | 0.36 W/mK (tabulated value) for P=90% |
| Modulus of elasticity (GPa) | 3 |
| Flexural strength (MPa) | ≥2 |
| Compressive strength (MPa) | ≥10 |
| Capillary absorption (EN 1015-18) | 0.12 kg/m² min 0.5 |
| Application temperature | from +5 °C to +30 °C |
| Drying time (23°C/50% RH) | approx. 7 days |
| Skimming thickness | 5 mm |
| Reaction to fire | NPD |
As a levelling compound, approx. 5–6 kg/m²; as an adhesive, approx. 3–4 kg/m². These are approximate figures, depending on the flatness of the substrate.
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