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Anhydrite Liquid Screed - Gypsol TS-20 - Free-Flowing and Self-Compacting Screed

Verified by manufacturer 8 months ago

LKAB Minerals Third party certifications:
  • BBA Agrément Certificate

    BBA Agrément Certificate

    Certificate type

  • EPD


    Certificate type

Gypsol TS-20 is a free-flowing and self-compacting screed. Specially formulated to be laid at just 20 mm deep.

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Gypsol TS-20; a multi-purpose thin screeding solution because of its particular formulation, TS-20 liquid screed can be laid either bonded or unbonded over a polythene slip membrane. The product is in both commercial and domestic construction projects. Customers use this screed to produce a smooth, flat and level floor to form the sub-base for subsequent floor coverings for internal floors.

Constructions, where the screed would typically be found, are:

  • Houses.
  • Apartment schemes.
  • Schools.
  • Hospitals.
  • Offices.
  • Shops.

LKAB Mineral customers are specially trained screeders that use specialized equipment to place the screed. The Gypsol TS-20 offers a cost-effective method of leveling an existing floor slab, notably because the product has high strength and high resistance to cracking. As with all other Gypsol liquid screeds, TS-20 is a highly environmentally friendly alternative to cement-based screeds. Therefore, use this as a heat transfer medium for thin section underfloor heating systems, whether electric or warm water.


Gypsol TS-20 can be placed at a depth of just 20 mm in either bonded or unbonded constructions.

Gypsol Binder is an integral component of Gypsol TS-20, a uniquely formulated liquid screed designed to offer a strong and durable thin topping to a solid substrate. Gypsol TS-20 can be laid either bonded or unbonded over a polythene membrane to provide a highly versatile design solution. Gypsol TS-20 can be used in many applications as a cost-effective alternative to bagged screeds to renovate existing rough concrete floors, level of pre-cast concrete planks, and where floor-to-ceiling heights is restricted. Gypsol TS-20 can, in some circumstances, be used in conjunction with low-profile underfloor heating systems subject to suitability.

Features and benefits:

  • Rapid application.
  • Vast coverage: 50 m² per m³.
  • Thin Screed sections: 20 mm Unbonded, 20 mm Bonded.
  • Fast drying: Drying rate more than 1 mm per day*.
  • No reinforcement nor fibres required.
  • No curing agents required.
  • Rapid return to service of work areas.
  • Foot traffic after just 48 hours.
  • Full loading after only seven days.
  • Assured high strength: Minimum Ca-C30 – F5.
  • Reduced requirement for Movement Joints Max 20 m length / Max aspect ratio 6:1.

*Independently tested and based on the fixed depth at 20˚C and 60% RH. Complete test data is available on request.

General information




Anhydrite binder

Guidance for specification option:

Gypsol Screed.








20 mm


Pr_35_31_06_78 Self-smoothing levelling screed mixesPrimary


M12/35 Coated resin flooring

M12/120 Resin flooring

M12/12 Resin flooring

M12/110 Resin flooring

M12/10 Resin flooring

M10/160 Proprietary self smoothing levelling screeds

Specification data - Self-smoothing levelling screed mixes


Gypsol binder.


Not required.


Polythene membrane.


Off white fluid mortar.


2000 kg/m³ (dry); 2200 kg/m³ (wet).



Manufacturer guidance


Required Flow

To EN 13454-2, 230—270 mm.

Reaction to fire

Class A1fl Non-Combustible.

Working time

2 hours.

Guidance for specification option:

  • Place and finish within 2 hours of batching.
  • Finish within 1 hour of placing.

Drying time

24—48 hours (foot traffic); 7 days (loading).

Guidance for specification option:

Gypsol TS-20 can be force dried after 7 days.

Manufacturer guidance

@20°C/60% RH.

In excess of 1 mm /day.


20 mm.

Guidance for specification option:

  • Gypsol TS 20 has been independently tested for suitability to be laid unbonded at 20 mm depth.
  • Prepare the substrate in accordance with BS 8204:7:2003 using a gritted two coat epoxy resin DPM or similar.

Manufacturer guidance



Up to 2.3 w/mK.

Sustainability data

Country of product manufacture

United Kingdom

Embodied carbon

A1-A3 (production stage) as defined in BS EN 15804

3.5 kg CO₂ eq/m²

Guidance for specification option:

Minimum: 3 kg/m².

Manufacturer guidance



Third party certifications

BBA Agrément Certificate

BBA Agrément Certificate

BBA Certificate



Gypsol Binder and Gypsol Complete Binder EPD


Gypsol TS-20

Gypsol TS-20

Gypsol Product Brochure

Gypsol Product Brochure

Hot and Cold Weather Guide

Hot and Cold Weather Guide

Case studies

Print Press Area, Dublin

Print Press Area, Dublin

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