Using Gypsol anhydrite binder creates a pumpable, self-smoothing floor screed. Moreover, this screed is an economically advantageous and a sustainable alternative to the labour-intensive and traditional sand cement screeds.
Gypsol; Anhydrite binder for pumpable, self-smoothing floor screeds
LKAB Minerals’ Gypsol, the high-performance anhydrite binder, is a key component for the flooring industry. It is the primary ingredient in pumpable, self-smoothing floor screeds.
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Our LKAB Minerals’ Gypsol Classic is a general-purpose, free-flowing and self-compacting screed.
Our Gypsol HTC is a high strength high-performance screed explicitly designed to enhance the thermal properties of an underfloor heating system.
LKAB Minerals’ Gypsol Rapide is a high strength high-performance screed. We have designed this, particularly for quick drying.
Our Gypsol TS-15 is a free-flowing and self-compacting screed. We formulate this especially to allow it to be laid at just 15mm deep.
You can lay our Gypsol TS-20 at just 20mm deep. This screed is a free-flowing and self-compacting screed.
LKAB Minerals’ Gypsol Rustique is a fast track flooring solution for an rustic or architectural look.
We modelled Gypsol XS, a high strength screeding solution, for use in projects that experience superior strengths and higher loadings.
We formulated Gypsol TimBRE, a multi-purpose screeding solution, especially for use over timber substrates.
We designed our Gypsol Summit specifically for use in high rise applications. In particular, where the screed needs to be pumped to ten stories and above without the danger of segregation.
We designed Gypsol Modular, a screeding solution, especially for use in modular construction either on or off-site particularly when you desire a lightweight construction.
BBA approved Gypsol is used an environmentally friendly alternative to cement based screeds and can be used in a range of construction projects large or small. Building projects where Gypsol can prove beneficial include:
- Nursing homes
- Community buildings
- Commercial projects
You will find case studies on the different projects in our DOCUMENTATION tab.
Where to buy Gypsol screed?
BBA approved Gypsol is available from more than 80 locations throughout the UK and Ireland. Our technical and specification experts cover the whole of the UK and Ireland and work with a range of quality assured manufacturing partners. The expertise available within the Gypsol team, combined with the manufacturing experience of our partners, means that we can offer an unbeatable package to meet all of your flowing screed requirements.
Our distribution network is continually growing to ensure easy availability of Gypsol screeds regardless of the size, nature and location of your project. Under the “WHERE TO BUY” tab, you will find an overview of most of the Gypsol suppliers.
Brands and manufacturers using Gypsol binder
There are several brands based on high-quality BBA approved Gypsol binder including:
Gypsol screeds are also readily available from several independent manufacturers. You can find an extensive list on the “where to buy” TAB.
Extensive Gypsol product range
BBA Approved Gypsol binder is the key component in all Gypsol free flowing self compacting floor screeds. Our technical experts have used this highly versatile and environmentally friendly material to develop a range of exclusive screed formats to suit every application. Each of these formats, including Gypsol Classic, our most widely used screed format and Gypsol Rapide screed, one of the fastest drying screeds of its type in the market, allow you to incorporate BBA approved Gypsol into just about any construction project.
- Rapide; A self-compacting, self-smoothing, fast-drying floor screed capable of drying in just 14 days from installation at 50mm depth
- Classic; Our general-purpose screeding system. The most commonly used material in our range and can be used in most applications
- HTC; Gypsol HTC (High Thermal Conductivity) specifically developed for use with underfloor heating and cooling systems as a high performance and thin screed system
- TS-15; An ultra-thin screed for bonded and un-bonded applications at a minimum depth of 15mm. Also perfect for use over low profile underfloor heating systems
- TS-20; A thin screed suitable for bonded and un-bonded applications down to a 20mm minimum depth.
- XS; Extra strength material for use in heavy-duty applications, where loading is likely to be higher than normal.
- TimBRE; Specially formulated and independently tested for use in timber frame and over timber supported floors including acoustic conditions.
- Summit; Formulated for pumping over very long distances or into very tall buildings of 10 stories and above.
- Modular; Designed for use in modular construction to allow early movement of units, also for a lightweight steel frame and Lewis Decking.
- Bagged Gypsol Screed; Pre-blended product supplied in 25kg bags for mixing on site. Ideal where minimal quantities are required, or access for ready-mix lorries is not possible.
Easy to place, Environmentally friendly, self-compacting, free-flowing screed
BBA Approved Gypsol is easily available from an extensive range of offsite and onsite mixing plants. Providing you with the many benefits including
reduced time and manpower on site reducing the cost of installation
Reduced manual handling using per mixed screed and protected pumping equipment reducing the health and safety impact on installers and lowering the risks to installers and sites.
No cement eliminating health risks associated with exposure to cement dust
Easy preparation, placement and finishing leading to better quality floors reducing the need for subsequent smoothing compounds
Fully self compacting requiring no secondary compaction leading to stronger and denser floor screed with much thinner depths
Very low embodied carbon reducing the environmental impact of the material
High thermal performance leading to high efficiency underfloor heating and cooling systems helping eliminate potential operational carbon emissions.
Easy to place, self-compacting, free-flowing anhydrite screed binder
An extensive range of offsite mixing plants uses our Gypsol. Providing you with the following benefits:
|deliver the Gypsol screeds to site ready to use||labour intensive site mixing and associated mixing equipment|
|pumped directly to where they are needed||manual handling operations|
|pumped using equipment with closed or grilled dispensing hoppers||risk of contact with moving machinery|
|finished using a lightweight dappling bar||requiring no secondary compaction most of the physical work needed to lay other screeds|
This way of working significantly reduces the negative impact on the musculoskeletal system of installing contractors.
Sustainable Gypsol floor screed solution
As a company at the forefront of screed manufacture, we are ever conscious of the impact we and our customers have on the environment. We therefore continuously aim to reduce our carbon footprint and educate our customers and clients about how they can optimise their designs using Gypsol screeds and help minimise their environmental impact.
Gypsol screed provides benefits, including:
- Low manufacturing carbon footprint
- Low operating energy
- Reduced lifetime impact
- Low-temperature underfloor heating
- Safer to work with
- Low cost
- Reduced waste
- Low embodied energy
Due to the inherent properties of Gypsol Screed and its sustainable credentials, our material has been awarded Silver status by the Supply Chain School for Sustainability.
Low manufacturing carbon footprint
Our carbon footprint has been independently audited and certified, verifying that Gypsol Binder products just 120kg of carbon dioxide per 1 tonne of material manufactured. This compares favourably with cement manufacture, which exerts in the region of 900kg per 1 tonne of material produced. You could, therefore, save up to 94% of the carbon emissions associated with the manufacture of your floor screed by switching from cement-based to Gypsol screed. Find out more in our carbon footprint guidance sheet.
Low operating energy
The more you reduce the energy used during the operational lifetime of a building, the lower the impact on the environment. Reducing your screed depth offers the opportunity to increase insulation depth. This enables the use of insulation systems which provide a lower GWP (Global Warming Potential) as well as reducing the heat loss through the floor, ensuring the building is as thermally efficient as possible.
Reduced lifetime impact
Gypsol screeds are 100% recyclable, which has a significant effect on the lifetime analysis of a building.
Low-temperature underfloor heating
When using underfloor heating, the key to efficiency is high thermal conductivity coupled with rapid response to changes in ambient conditions. Gypsol screeds offer thermal conductivity as high as 2.5 W/mK compared with 1:4 sand cement screed, which typically offers just 1.1W/mK.
This advantage, coupled with the thinner section, improves the floors ability to generate thermal inertia, increasing the coefficient of performance of the underfloor heating system by up to 25%. Altogether this results in much-reduced flow temperatures and corresponding energy savings.
Gypsol binder toxicology
Our LKAB Minerals’ Gypsol screeds emit no VOCs.
LKAB Minerals manufacture Gypsol binder from a by-product of the chemical industry. For every 1 tonne of Gypsol binder used 0.98 tonnes of landfill is avoided. Also, we are the only Anhydrite binder supplier with our own UK based manufacturing facility, ensuring control of the entire process and reducing the carbon footprint associated with transportation and logistics.
Safe to work with Gypsol screed
Gypsol binder does not contain Portland cement. Gypsol screed is supplied ready to use, significantly reducing the manual labour associated with other screed systems. Installation of Gypsol is carried out using specialist pumping equipment and does not require the installer to be on his hands and knees. Gypsol is fully self-compacting and therefore, reduces the negative on the musculoskeletal system of installers.
Low embodied energy
Unlike other binder systems, the manufacturing process for Gypsol binder requires no high-temperature production methods. This means that very little energy is used in the manufacture of our material. When incorporated into Gypsol Screed, it can also be used at much-reduced depths, requiring less material in the construction process. It also allows for more sustainable products to be used in conjunction with the screed, thus reducing the embodied energy of the building. For more information on optimising your design, contact your regional specifications manager.
We manufacture Gypsol anhydrite binder to UKCA/CE certified standards in the UK. LKAB Minerals produce Gypsol binder from a by-product which we retrieve from the chemical industry. Previously this product was used as landfill.
A non-toxic, non-hazardous stable mineral. You can download the Safety Data Sheet from the documentation tab.
LKAB Minerals can provide support to assist with your Gypsol screed projects.
CPD’s and documentation
The internal support we offer consists of:
- CPD training presentation at your company. FREE of charge, duration ~1 hour. Ask for more information or plan a session via our Area Technical and Specification Managers via below contact form.
- Informational guides:
The Gypsol team can offer a comprehensive NBS Specification for your project. Contact your regional Technical Specification Manager for details.
Located with the NBS National BIM Library, BIM Modelling is a specification tool for designers. Our BIM Models are listed below:
- Gypsol classic flowing screed
- Gypsol Modular Gypsum based flowing screed
- Gypsol Solida heated screed system
- Gypsol Summit flowscreed
- Gypsol TimBRE self-levelling anhydrite screed
- Gypsol TS-15 ultra-thin flowing screed
- Gypsol TS-20 thin flowing screed
- Gypsol XS High Strength Anhydrite screed
- Sureflo bagged Gypsum screed
- Gypsol HTC thermal screed
The Royal Institute of British Architects (RIBA) provides support to Architects & designers:
For your convenience, we have a lot of background information available online about our entire Gypsol range.
We have several Gypsol related videos available to watch online.
General Gypsol videos
- Gypsol; What is Gypsol exactly? Where does it come from and what does it do?
- Gypsol Complete; our first pre-blended composite screed binder. Gypsol complete offers flexibility and a cost-effective screed solution to the manufacturer whilst providing many other benefits.
- Gypsol Diamond & Rustique; Gypsol screeds are available as finished flooring solutions, providing an aesthetically polished or rustic floor finish.
- Gypsol underfloor heating
- Drying times of Gypsol; The drying times of Gypsol screeds are independently tested and can provide a finished floor solution in just 13 days.
- Installing Gypsol Floor Screeds; Gypsol screeds provide a fast and efficient installation solution for any type of construction. This video provides an insight into the benefits of installing Gypsol screed in your commercial or domestic project
Online learning and CPD training
We regularly organize online webinars and training sessions which are recorded and made available to watch at your convenience. We advise you to check our online learning centre for the most up-to-date knowledge. This section of the website is set up in such a way that you will automatically receive a certificate after you have completed a session.
LKAB Minerals currently sells its Gypsol products in the UK only.
Sales points in the UK are:
North East England
North West England
South East England
South West England
Bagged Gypsol is even available as Sureflo, which is supplied by national merchant CCF in 25 kg bags for mixing on site.
In case you are not sure who to contact, please check with the responsible Gypsol Technical and Specifications Manager.
How thin can I lay Gypsol screeds?+
Bonded: 15 mm (TS-15)
Unbonded: 15 mm (TS-15)
Floating domestic: 35 mm
Floating commercial: 40 mm
With underfloor heating: 20 mm cover to pipes (HTC)
What is the benefit of using Gypsol screeds with underfloor heating?+
There are a few benefits of using Gypsol screeds with underfloor heating. The minimum cover to the heating element needs only to be 20mm using HTC screed, so the heat only has to travel through 20mm of floor screed before you start to feel the heat. Gypsol screeds are self-compacting making them denser compared to hand applied floor screeds. This means that the heat will travel through the screed more quickly. You install the screed in a very fluid state, intimately encapsulating the heating elements and drawing the heat from every surface.
This means that the reaction times will be faster, reaching your desired temperature more quickly.
The Gypsol team can offer you advice on bay sizes and the location of expansion joints; this is important where underfloor heating is employed.
What is the cost of using Gypsol screeds compared with other floor screeds?+
To gain an accurate comparison, measure the cost of installation per square metre of floor rather than the cost of material per tonne or metre cubed. Because you can lay Gypsol screed much thinner than conventional sand cement screeds more square metres of floor is covered. For example, a sand/cement floor screed without underfloor heating laid on insulation should be at least 65mm deep. In this example, it means that you can only cover 15 square metres with one cubic metre of material. However, the same floor laid using a Gypsol floor screed at 40mm deep would cover 25 square metres.
This also allows the potential to change insulation types to more cost-effective options, offering significant cost savings for your floor.
Can I install tiles or vinyl onto Gypsol screeds?+
You can lay any floor covering onto Gypsol floor screeds, including carpets, tiles, vinyl, LVT and resin floor systems. As with all screeds, whether cementitious or Gypsol, will need to be properly prepared; clean, dry, mechanically abraded and primed.
Best practice is quoted by the Contract Flooring Association in their guide to contract flooring.
Also, any underfloor heating should be commissioned and run prior to installing floor finishes.
Can Gypsol screeds be used for outdoor use?+
We recommend that you use Gypsol screeds only in weather tight environments. The Gypsol team can offer you advice on all aspects of the floor installation, and can even draw up a floor specification which you can present to your contractor for tendering purposes. Just call us for professional advice.