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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
How to install underfloor heating
06th November 2019

Why install underfloor heating?

Installing underfloor heating in your property offers a huge range of benefits. Not only can you walk around during winter without needing to don your fluffy slippers, it is also incredibly cost effective, energy efficient and helps you save space that would otherwise be occupied with radiators or other heating appliances.

Apart from its space-saving benefits, underfloor heating also distributes heat much more effectively throughout a room than other forms of heating, which only heat the air in the immediate vicinity. Installing underfloor heating for yourself can seem daunting, but it doesn’t have to be. We walk you through the process of installing underfloor heating in your property.

Step 1: Preparation

Any type of renovation work requires preparation, and installing underfloor heating is no different. Here is the preparation work that you will need to do first:

  1. Pull up and remove any existing flooring
  2. Ensure that your subfloor is cleared of all debris. This will prevent any damage to the pipes when laid.
  3. In many cases, a damp proof membrane will need to be installed over the subfloor. If you are unsure, it is best to consult an underfloor heating expert like ourselves.
  4. (Wet underfloor heating systems only) A suitable location for the manifold must be chosen. This is the central control hub for your underfloor heating.

Step 2: Lay underfloor heating insulation

The thickness and type of insulation can vary, so we recommend that you consult an expert for advice regarding this step. The insulation layer will be sealed to the edges of the wall to ensure that no liquid screed penetrates through to the subfloor.

Step 3: Install the manifold (Wet underfloor heating systems only)

Before you start laying the pipes of your wet underfloor heating system, you should ensure that your manifold is installed in a suitable place, on a sturdy wall that can tolerate the weight of the unit and connected pipes. The manifold is the connected to the existing water supply.

If you are installing electric underfloor heating, you will require a qualified electrician to connect your underfloor heating to the mains.

Step 4: Lay pipe grips

Now that the foundation is in place, it is time to start laying the pipework. To ensure that your pipes remain fixed in position, you can use a variety of methods to achieve this, like pipe positioning panels or grip rails. Grip rails should be laid out at a 90° to the direction of the piping.

Step 5: Lay pipework

This step will be easier if you have already planned the layout of your pipe network in advance. If you do not have a design to work from, then piping should follow a snakelike pattern at 200mm intervals.

Remember, in a wet underfloor heating system, both ends of the pipework will need to connect back to the manifold.

Step 6: Installing liquid screed

Now that your pipework is ready and everything is properly connected, you can install the liquid screed over the top. Liquid screed is superior to other traditional screeds, as it is specially developed to ensure the best thermal conductivity.

At Wright Minimix, we have developed our own self-levelling Wrightflow liquid screed designed to dry within 48 hours. It also has a reduced risk of cracking and is quick to install whilst offering excellent durability and conductivity.

Step 7: Lay down your flooring

Once the liquid screed is fully cured, you can go about laying down your flooring of choice. Switch on your underfloor heating and relish the feeling of warmth underfoor!


At Wright Minimix, we are your one-stop-shop for all things concrete, including bespoke liquid screed. If you need assistance installing an underfloor heating system, our team are here to help. Get in touch today on 0117 958 2090 to discuss your requirements.

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10 little known facts about concrete
04th October 2019

Strong, resilient, enduring. Concrete is the most popular building material in the world, used to create anything from roads and buildings to sculptures and kitchen countertops. Discover more about this fascinating material with our 10 little known and unusual facts about concrete.

1) Reinforced concrete is resistant to water and fire – the only building material in the world to be impervious to both. 

2) The first road to be built using concrete was constructed in 1893 in Ohio, USA - concrete is actually the best material around for building roads due to its unrivalled durability. 

3) Concrete helped the UK defeat its enemies during the Second World War - concrete was used to build parabolic acoustic mirrors, more commonly known as listening ears, which reflect and focus sound waves. These huge structures were placed along the coast and were used to detect enemy aircrafts. 

4) Concrete is becoming more popular for use in homes -  including kitchen worksurfaces, smooth polished flooring and custom-made fireplaces. 

5) The earliest evidence of concrete structures dates back to around 6500BC - they can be found in Syria and Jordan. 

6) The tallest structure in the world is built from concrete - the Dubai skyscraper Burj Khalifa is a whopping 2,722 feet tall and used 330,000m³ of concrete to build. 

7) The UK’s largest concrete pump trucks are found at Wright Minimix, based in South England and South Wales - weighing in at 45 tonnes, the UK’s largest Axle 6 Section M60 & M62 Meter Carbon Fibre Boom Pumps, with on board K Tronic Stability control, is capable of delivering 180m³ of concrete an hour. 

8) Beijing’s new ‘starfish’ Daxing international airport is so big that China has poured more concrete every two years than America did in the entire 20th century. 

9) The iconic Brazilian statue ‘Christ the Redeemer’ was built using concrete and is perhaps one of the world’s best displays of concrete sculpture. 

10) Measuring 142 feet in diameter, the famous dome of the Pantheon in Rome is still the world’s largest unreinforced concrete structure - it was built by the Romans in 125AD. 


If you’re in need of the perfect mix of this remarkable building material, please don’t hesitate to get in touch with Wright Minimix today. We supply and deliver quality ready mixed concrete straight to your site; no fuss, no waste. To learn more, contact the team today on 0117 958 2090 and we’ll be happy to answer any questions. 

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Why is Concrete Being Considered for Buildings on Mars?
05th September 2019

Scientists have identified concrete as being a suitable material for building shelter on other planets thanks to its strength and durability. 

Concrete plans for space exploration 

Since the first moon landing 50 years ago, leaps have been made in space exploration technology which will soon make it possible to send humans to Mars. However, space is a dangerous place and the astronauts who make the journey and their equipment will need a safe shelter when they get there to protect them from cosmic radiation and meteorites. Despite all the innovative, space-age technology available to them, scientists have, in fact, turned to one of the oldest building materials on Earth to solve this problem, concrete. 

Aleksandra Radlinska of Pennsylvania State University and the principal investigator explains, "on missions to the Moon and Mars, humans and equipment will need to be protected from extreme temperatures and radiation". She goes on to say that "concrete is very sturdy and provides better protection than many materials," which is why they are conducting this research. 

Difficultly finding the right mix of concrete

One of the main reasons for this is that concrete can theoretically be made using materials already available on the extra-terrestrial planet, saving a significant amount of money. Concrete is made from a specific blend of sand, gravel and rocks mixed together with water to form a liquid paste. When it sets, concrete forms a dense, solid mass that’s incredibly strong and hard wearing. Scientists believe that the process can be replicated in space, however, before we construct another Colosseum on Mars, there are questions about whether this process that works so well on Earth, will work just as well off planet. 

While our experts here at Wright Minimix have perfected the technique of mixing concrete on Earth, the scientists are experimenting with various materials such as cement powder, additives and the amount of water required in order to find a solution that will work on Mars. 


Back on Earth, or more specifically South England and South Wales, if you’re looking for quality ready mix concrete for your project, contact Wright Minimix today on 0117 958 2090 and we’ll be happy to discuss your needs. 

Read more
Do I need to hire a concrete pump?
16th August 2019

Concrete pumping is an efficient way of delivering ready mix concrete, but is it right for you? Access problems, time and lack of manpower are all reasons to consider a concrete pump.

Your site is difficult to access

If the concrete mixer truck cannot get close to your lay site, then concrete delivery becomes much more challenging. Without a concrete pump, you will have to rely on manual labour and wheelbarrows to get your ready mix concrete from A to B within the timeframe to ensure it doesn’t start to cure. Not only can this be very wasteful, inefficient and costly, it can be downright impossible for larger scale products that require a large volume of concrete.

Hiring a concrete pump negates all these problems; no site is too difficult to access for one of our boom pumps or mini pumps. Capable of pumping up to 180m3 of concrete per hour, our concrete pumps ensure that your concrete mix is delivered on site quickly and affordably. That is the equivalent of nearly 1,800 wheelbarrow loads!

You have time restrictions

If you are working to a tight schedule, then concrete pumping is by far the most efficient method of concrete delivery available. Even if your site is not difficult to access, hiring a concrete pump will ensure that ready mix concrete is laid in the shortest amount of time possible.

You don’t have the manpower

For larger DIY projects, it is highly possible that you won’t have the help or manpower available to help you transport the concrete from the mixer to the correct location in the necessary time. A concrete pump totally removes this concern, allowing you to concentrate on finishing it the way you want.


Are you interested in a hiring a concrete pump for your DIY or commercial project? For more information on our concrete pumps, ready mix concrete and liquid screedcontact us on 0117 9582090.

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