SMET LiteFlo® Lightweight Flowing Floor Screed
Our unique German-made, factory-produced, pumpable, superior-quality LiteFlo® Alpha Hemihydrate screed is based on calcium sulphate and selected lightweight aggregates.
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, timer-frame houses, and in high-rise buildings and apartment blocks.
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.
SMET LiteFlo® is unique, in that it’s the first pumpable lightweight flowing screed available. It’s made from specially selected aggregates, which makes it 30% lighter than conventional flowing screeds and 70% lighter than sand and cement, meaning less material is required per m2.
LiteFlo® complies with EN 13813: 2002, is CE-marked and is available in 27Kg bags or bulk silos.
Benefits of SMET LiteFlo® Lightweight Flowing Floor Screed
- Pumpable – first of its kind available.
- Lightweight – high yield, 43kg per m2 at 40mm thickness.
- 30% weight reduction compared to standard calcium sulphate screeds.
- 70% weight reduction compared to traditional sand and cement.
- Absolutely ideal for application in high-rise buildings, over timber suspended floors, timber-frame houses and in new builds and renovations.
- Smooth laitance-free finish.
- For application at thicknesses of between 20 and 90mm.
- Under Floor Heating – full encapsulation.
- Perfectly level floors – every time.
- Installed nationwide by Smet Supported Partners.
- Sustainable – as this calcium Sulphate binder naturally embodies less carbon than a cement-based binder.
- German made.
- CE EN 13813: 2002
Related Downloads
TDS SMET LiteFlo® Lightweight Flowing Screed
Aftercare SMET LiteFlo® Lightweight Flowing Screed
EPD – LiteFlo® Lightweight Flowing Screed
SMET Floor Screed and Compounds Product Selector
National Building Specification Clause
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 sites in convenient 27 kg pre-mixed bags or in bulk site silos. We have a good range of SMET lightweight screed, systems, and aggregates (void fillers) suitable for any building project.
Check out this short video we made on-site at the GWQ Tower in London – a good demo of the mixing set up and equipment used when using the 27kg bags pumped to high-rise:
