SMET LiteFlo® Lightweight Flowing Floor Screed
Our unique German-made, factory produced, pumpable, high-quality LiteFlo® Alpha Hemihydrate screed based on calcium sulphate.
LiteFlo® Lightweight Flowing Screed is designed for application at thicknesses of between 20 and 90 mm and is particularly suitable for application over timber suspended floors and in high-rise buildings and apartment blocks. LiteFlo® complies with EN 13813: 2002. and is CE-marked.
LiteFlo® is suitable for floors in homes, offices, public buildings and places exposed to similar loads. LiteFlo® may be applied as a levelling screed directly onto a load bearing floor, unbonded on a separating barrier (polyethene), as a floating floor and can be used in conjunction with underfloor heating or cavity floors. However, when using LiteFlo® in combination with underfloor heating, it should be noted that LiteFlo® has a low thermal conductivity.
LiteFlo® should be covered with a floor finish such as tiles, linoleum, parquet, cork or carpet. If a cement based adhesive or smoothing compound is required the surface of the screed must first be sealed, using an appropriate acrylic primer/sealer.
Related Downloads
TDS SMET LiteFlo® Lightweight Flowing Screed
Aftercare SMET LiteFlo® Lightweight Flowing Screed
SMET Floor Screeds and Compounds Product Selector
National Building Specification Clause
Benefits of SMET LiteFlo® Lightweight Flowing Floor Screed
Technical Details for SMET LiteFlo® Lightweight Flowing Floor Screed
| Screed Specification EN 13813: 2002 | |
| Maximum Thickness | 90mm |
| Minimum Thickness |
Bonded: 20mm Unbonded: 30mm Domestic: 35mm Commercial: 40mm Over Underfloor heating Pipes: 25mm (BS 8204-7) |
| Use (External Use) | No |
| Use (Internal Use) | Yes |
| Compressive Strength (28 days) | ≥ 20.0 N/mm² |
| Flexural Strength (28 days) | ≥ 4.0 N/mm² |
| Tensile Adhesion | > 1.5 N/mm² |
| Yield | 1.08 kg/mm/m² |
| Flow Rate | 240 – 260mm (slump flow – Hägermann cone) |
| Hardening Time (light foot traffic) | after approx.12 hours, can be partially loaded after approx. 7 days |
| Hardening Time (final covering) | Final Covering: 2 – 6 weeks dependent on thickness and drying conditions |
| Recommend water content | 9 – 10 L water per 27kg bag |
| Working Life | 45 – 60 minutes depending on ambient conditions |
| Reaction To Fire | A1 Non-Combustible |
| Thermal Conductivity (tabular value) | λR = 0.40 W/mK |
| Yield | 1.08 kg/mm/m² |
| Fresh (Wet) Density | 1.5 kg/l |
| Hardened Dry Density | 1.3 kg/m³ |
| pH Value | > 7.0 |
SMET LiteFlo® is supplied to site in convenient 27 kg pre-mixed bags or in bulk site silos.
Check out a short video on-site at the Tower in London 2015 – the mixing set up and equipment used:
