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How to prepare your floor for liquid screed

Preparing liquid screed

 

As established concrete experts based in Bristol, Newport and Cheddar, we are ideally positioned to provide guidance on the best way to prepare for liquid screed.

Our Wrightflow Liquid screed flooring is designed to withstand even the most testing conditions and is ideal for customers looking to utilise their underfloor heating and save on their energy bills. The combination of materials, anti-crack and anti-shrink agents used in our liquid screed ensures you are left with only the highest quality concrete flooring and long-lasting results with a range of benefits.

However, this all relies on you undertaking the correct preparation work first. Find out how you can best prepare your site for liquid screed below or contact our team with any queries on 0117 9589 2090.

How to prepare your floor for liquid screed

 
  • Remove any debris from the sub floor.
  • Place insulation in 2 layers. Using dried sand to fill the void around pipes and ensure that this is level before installing the second layer of insulation board.
  • A membrane of 1000 gauge or thicker should be laid immediately under the pipework (above the insulation board) as a slip layer, and to prevent leakage of the screed before setting.
  • Install an edging strip around the edges and corners of the wall and attach securely.
  • Any shuttering across doorways or steps should be fully sealed with expanding foam or mastic to prevent leakage after laying but before setting. Pipe ducts or holes through walls also need to be sealed before placement of the liquid screed.

Wright Minimix - Liquid Screed

Wright Minimix - Liquid Screed

If you are installing liquid screed with underfloor heating

 
  • Install underfloor heating pipes and ensure that they are clipped every 400mm and more around bends. Make sure that the system is full of water prior to the liquid screed being laid. This avoids the pipework floating to the surface of the screed.
  • If you are using an ‘eggbox’ type pipe system, the membrane should be laid under the eggbox, and you should avoid using small off-cuts of eggbox to avoid any possibility of floating.
  • The minimum cover above underfloor heating pipes is 30mm therefore minimum screed thickness is normally 50mm when using a 16mm UFH pipe.

Common mistakes to avoid when preparing for liquid screed

 

Measuring the space incorrectly

Often sub-floor slope or unevenness may cause unexpected differences in the overall floor level and in the quantity of screed required. It is the customer’s responsibility to measure each room/area appropriately.

You will need to consider critical features such as door openings, minimum thicknesses/cover and required differentials in floor height between rooms. These must be agreed prior to installation and marked on the wall above the level of the finished screed so that they are present for comparison should a disagreement be raised about finished floor levels.

Any such disagreement must be brought to our attention within 48 hours of the screed being laid. Should these marks be removed or altered prior to any investigations then we will not be held accountable for any level issues.

Ordering less screed than required

Should extra liquid screed be required over that originally ordered and a separate delivery needed, the client will be charged extra costs,  so it is essential that a proper estimate is made by the client to avoid this.

Do you have any other questions about preparation for our liquid screed? Don’t hesitate to contact us and a member of our team will be glad to answer your queries on 0117 958 2090.

Do you have any liquid screed requirements? 
We are the right people for you – let’s work together! Contact us on 0117 958 2090 today to get a quote or to find out more.

News
What concrete mixes do we provide?
17th August 2018

Wright Mini Mix are innovators in providing high-quality concrete in Bristol, Bath, Chippenham, Newport, North Wales, South Wales and across the UK. We understand that for non-experts it’s difficult to understand the different types of concrete mixes, and the benefits that they provide for certain environments. Our team are specialists in ready mix concrete and liquid screed, find out more about these durable and cost-effective materials below! 

Concrete mix materials can include: 

  • Fibres - to enhance strength 
  • Retarding agents - reduces the rate of setting 
  • Plasticisers - free flowing, better workability
  • Accelerating chemicals - increases the rate of setting 
  • Corrosion inhibitors - reduces corrosion of steel rebars 

For more information about our concrete mixes or our concrete pump services please contact 0117 958 2090. 

Types of concrete mixes we offer: 

Ready Mix Concrete

Ready mix concrete is the most common form of flooring for a warehouse or factory business. We can custom make your ready mix concrete to suit your building needs and specifications that follow all British Standards (BS8500-2). It’s used in a variety of commercial and domestic projects we have previously completed in our case studies, why not check them out for inspiration? 

Benefits of ready mix concrete: 

  • Cost effective
  • High-quality product
  • Environmentally friendly 

Wrightflow Liquid Screed 

Liquid screed is a great alternative to ready mix concrete if you have underfloor heating, or want to reduce your carbon footprint. It provides no shrinking, cracking or curling and the material can be laid into low depths, which means our team uses fewer materials for projects therefore costing less money for our clients. 

Benefits of liquid screed: 

  • Eliminates the need to seal the floor prior to laying the latex
  • Improves the performance of your underfloor heating system
  • Reduced risk of cracking, curling and shrinkage
  • Self-levelling for a smooth even finish
  • Faster installation and drying times

We supply ready mix concrete mixes that are batched with your requirements in mind. Don’t hesitate to contact our team of concreting experts for concrete delivery and advice.

Read more
Case Study: 2600m3 Concrete Pour, Newport
31st July 2018

The brief

The client required 2600m3 of ready mix concrete in total for the floor of a new warehouse under construction, which when completed would provide an extra 70,000 square feet for bulk storage facilities at Alexandra Dock.

The solution

Our team was approached by the client to supply the concrete mix for the project, however, due to the warehouse’s size, the job needed to be undertaken over 6 separate pours of approximately 430m3 each. Our team suggested that the client consider using our 42m concrete pump, to ensure quick and efficient concrete delivery and to minimise their labour costs.

Our concrete pump made easy work of supplying the ready mix concrete on all occasions, navigating under the warehouse ceiling with ease. As a result of our work, the concrete floor of the new warehouse was completed both on time and on budget.


Do you require commercial concrete or a concrete pump for your project? You can rely on us for an efficient concrete delivery service! Get in touch today on 0117 958 2090.

Read more
The Many Benefits of Liquid Screed Flooring
24th July 2018

Liquid screed is becoming an increasingly popular flooring option for internal areas, but why? We discuss the unmissable benefits of liquid screed flooring.

Easy to install

An attractive benefit of liquid screed for homeowners and DIY jobs is how quick and easy it is to install compared with other screeds. In fact, liquid screed flooring can be installed 10 times faster than sand cement screed! Not only does it require less manpower, it also requires minimal installation equipment other than some prior preparation and a concrete pump, which makes it an excellent hassle-free flooring option.

Best option for underfloor heating

There’s no better way to capitalise on your underfloor heating system than liquid screed flooring. Liquid screed when poured coats the pipes entirely, eliminating air bubbles and maximising conductivity.

Due to the fact that less depth of liquid screed is required when compared with more traditional screeds, heat also has less distance to travel through the floor, meaning that heat is much more effectively transferred throughout the floor.

Levels uneven surfaces

One of the main benefits of liquid screed is that due to its improved flowability and liquid state, it easily reaches the corner of rooms and evens out any bumps on the surface of the floor.

Dries quickly

If you want an internal flooring project done as quickly as possible, then liquid screed is the ideal choice, as liquid screed flooring can handle light foot traffic after just 24 hours!

Reduced chance of cracking

Our Wirghtflow liquid screed flooring is specially designed to reduce the risk of cracking and curling, leaving you with an even surface finish each time!


Does liquid screed flooring sound ideal for your project? Our Wrightflow liquid screed is the perfect solution for DIY and commercial concreting projects alike! Get in touch with our team today on 0117 958 2090.
 

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Tips for laying concrete mixes in hot weather
13th July 2018

If you are laying your own concrete mix this summer, here’s how you can guarantee that hot weather doesn’t ruin the curing process.

Why is it important to keep concrete mixes cool as they set?

The hotter the external temperature, the faster the concrete will cure. This is problematic because the concrete mix needs to hydrate as part of the curing process. 

This process essentially involves the formation of crystals as the concrete absorbs water. When the surrounding temperature is too hot, this process is sped up, meaning that these crystals form too quickly and don’t strengthen as well as they should.

Water also evaporates from the surface of fresh concrete too quickly during hot weather, which results in a weak surface layer more prone to plastic shrinkage and cracking.

How do I keep my concrete mix cool during hot weather?

  • Invest in ready mix concrete delivered straight to your site so you don’t have to worry about mixing the concrete and laying it before it dries out.
  • Avoid laying concrete at the hottest part of the day, between 11-3pm.
  • Use a suitable concrete mix in your project. For example, set retarding concrete mixes slow down the curing process, making them ideal for use in hot weather.
  • Keep all your equipment in the shade until you are ready to use it. This includes metal chutes and wheelbarrows used for transportation of the concrete.
  • Ensure that you have a sufficient workforce to lay the concrete quickly.
  • Make sure that you are well prepared to receive the ready mix concrete delivery.
  • Cover the concrete with a plastic sheet in order to create shade and prevent evaporation as the concrete mix cures.

If you are inexperienced at laying concrete in hot weather, then it’s always wise to seek the advice of a professional. We can provide help and guidance on how to properly lay your DIY or commercial concrete. Get in touch today on 0117 958 2090.

How durable is fully cured concrete in hot weather?

Once fully cured, concrete is much more tolerant of high temperatures when compared with other common road and paving materials, such as asphalt, which begins to melt at around 50 degrees. 

With temperatures reaching above 30 degrees in many parts of the UK this summer, and ground temperatures reaching much higher, these asphalt roads have already started to cause problems, even trapping a bin lorry and its driver in Berkshire. 

Alternatively, regular concrete is not affected by heat until it reaches around 400 degrees, making it the far superior choice for avoiding lengthy and pricey repair jobs.


Laying concrete mixes in hot weather can be tricky. We supply ready mix concrete mixes that are batched with your requirements in mind. Don’t hesitate to contact our team of concreting experts for concrete delivery and advice.

Read more