What is a Liquid Screed Floor?

Liquid Screed Flooring is something we have plenty of questions about! So, we’re guessing you might have some questions too. That’s why we’ve created our handy guide to Liquid Screed Floors. You can find these below, or, to find out more contact the friendly team at Midland Flooring on 01675 465110 or email info@midlandflooring.biz

Top Question – How is a Liquid Screed Floor Installed?

Screed will be delivered in a large mixer truck and our installers will use a pump to lay the liquid floor. The flow rate is approximately 5 minutes per m3.

The surface of the screed will then be dappled with a T-bar, which will remove any air bubbles and produce a smooth surface for the final finish.

Immediately after installation, and until the screed has hardened, you will need to ensure the surface is protected from direct sunlight, water ingress, and severe draughts.

After 3 days it is recommended that doors and windows are opened (in good weather) to assist with drying and the release of moisture

Strength of a Liquid Screed Floor

Liquid flowing screed can achieve a standard strength of C30N/mm2 we also supply and install extra strength flowing screed floors that can achieve C35 to C40N/mm2 Liquid Flowing Screed Floors do not require any reinforcement or fibres to add to their strength.

Minimum Liquid Screed Floor Depths

  • Fully Bonded                                                                        25mm
  • In contact with the substrate / Unbonded                     30mm
  • Floating commercial                                                           40mm
  • Floating domestic                                                                35mm
  • Cover to conduits / underfloor heating pipes                25mm

(Pipes are usually 16mm to total depth 41mm)

Liquid Floor Screed Soundness Category

Soundness category A according to BS 8204: Part 1 (BRE Screed Test)

Liquid Flowing Floor Screed Health and Safety

Liquid Flowing Screed is Protein free and will not harbour bacteria.

Installation of Liquid Screed Flooring

Screed will be delivered in a large mixer truck and our installers will use a pump to lay the liquid floor. The flow rate is approximately 5 minutes per m3.

The surface of the screed will then be dappled with a T-bar, which will remove any air bubbles and produce a smooth surface for the final finish.

Immediately after installation, and until the screed has hardened, you will need to ensure the surface is protected from direct sunlight, water ingress, and severe draughts.

After 3 days it is recommended that doors and windows are opened (in good weather) to assist with drying and the release of moisture

How Long To Install a Liquid Screed Flooring

A four man team can install over 800m2 per day of liquid screed, compared to 150m2 of traditional screed.

You can walk on a liquid screed floor within 24-48 hours compared to 7 days for traditional sand cement.

Gyvlon screed will dry at a rate of 1mm per day up to a screed depth of 40mm if the drying conditions are good.

Thermal Conductivity of a Liquid Screed Flooring

Liquid screed has twice the thermal conductivity (2.2w/m2K) than that of a traditional screed (1.1w/m2K). This means that under floor heating system can cost up to 10% less to run.