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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
The Advantages of Concrete Building Blocks
28th September 2020

Concrete building blocks are popular building materials for many reasons - they’re readily available, affordable, and strong – and despite being man-made, concrete blocks are also a sustainable choice. As leading manufacturers and suppliers of quality concrete products in the South, our concreting experts outline some of the benefits of concrete blocks for construction.

Strong & durable

As with the majority of concrete-made structures, the natural components in concrete mean that concrete blocks are strong and able to stand the test of time, and as concrete tends to get stronger with time, it makes concrete blocks a great candidate for buildings, security barriers and block walls.

Fire resistant

Concrete blocks also have a high thermal mass which means they are extremely effective at absorbing and storing heat. Where a wooden structure will quickly succumb to flames, a concrete block building can resist them and limit fire’s ability to spread quickly.

To protect the safety and integrity of your project, all our concrete blocks at Wright Mini Mix are fire-resistant, boasting a fire safety grade of A1, the very highest rating available.

Sustainable

When a building is designed and constructed well, concrete blocks help keep it cool during the summer months and warm in the winter. This allows the building to achieve the highest levels of long-term energy efficiency possible and contributes to the building’s overall sustainability and low running costs.

Cost-effective solution

Oftentimes, environmentally friendly choices come with a hefty price tag. Concrete blocks remain affordable, especially since they allow for rapid construction on any project, saving not only money, but time.


If you’re looking for high quality concrete blocks at fantastic prices for your residential or commercial project, go to our concrete blocks page to discover more about the blocks from the South’s leading manufacturer and supplier of concrete products.

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How is ready mix concrete delivered?
09th September 2020

Due to its volatile nature, concrete has always had meticulous methods and ways of being delivered, and ready mix concrete is no exception. Read on to find out how ready mix concrete is delivered.

At the mixing site

Ready mix concrete typically travels from it starting point at the mixing site to its final destination in a mixer truck. Mixer trucks are used especially for concrete mix because this vehicle has a rotating mixer drum which is usually set at an angle, and inside this mixer drum is a set of fins that are set up in a spiral configuration – allowing the concrete to load and mix when the drum rotates in one direction and to discharge when it goes the other way.

Transportation

Mixer trucks keep ready mix concrete at the right consistency after it has been mixed at its original starting point, however sometimes they even sometimes do all the mixing while delivering. This solves the problem of premature hardening or slump loss that can result from delays between mixing and transportation. It also allows concrete to be hauled to sites which are quite a distance away from the starting point. When this needs to occur, the concrete is mixed and loaded, then taken to the job site with the drum rotating at between 2 and 6 rotations per minute, which helps to make sure that it remains at optimum consistency when it arrives at the job site.

The drums on mixer trucks are designed to be filled at between 60 and 80 percent capacity, depending whether the drum is acting as mixer or agitator. If the ready mix concrete isn’t transported in time or is exposed to significant temperature changes, it may experience a change in consistency, in which case more water can be added if the consistency becomes too thick. As a general rule of thumb, ready mix concrete should be discharged within 90 minutes and before 300 revolutions after water was added, unless the purchaser specifies otherwise.

Offloading

The truck specifications are Important factors to consider when delivering ready mix concrete, and this may depend on the location its destination, and how easy it is to get the truck in and out of the drop-off site. For example, a smaller 4-wheel mixer truck is likely to be able to fit into tighter spots and harder to reach places than their larger counterparts.

Ensuring a smooth delivery

Now that we’ve explained how ready mix concrete is delivered - its important to note the significance of ensuring a smooth ready mix concrete delivery if you are expecting one. We’ve previously created a list and explanation of the factors you will need to consider if you are expecting a ready mix delivery, you can check it out here.


If you’re looking for a fast and efficient concrete delivery service, contact Wright Minimix today! Our team has years of experience preparing and delivering quality concrete for a range of different projects, from small DIY endeavours to large scale commercial builds. Simply call 0117 958 2090 or complete and submit our online contact form and we’ll be in touch soon.

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We’re Hiring!
10th August 2020

Production/Operations/Transport Manager

We are looking for someone to join our team to manage overall operations and be responsible for the effective and successful management of labour, productivity, quality control and safety measures as established and set for the Operations and Transport Department.

Your Responsibilities 

  • Ensure safe and efficient operations.
  • Serve as a company representative on regulatory issues.
  • Enhance the operational procedure, systems and principles in the areas of information flow and management, business processes, enhanced management reporting and to look for opportunities to expand systems.
  • Carry out supervisory responsibilities in accordance with company's policies and applicable laws.

Responsibilities may include interviewing, selection and hiring; training new and existing employees; planning, assigning and directing work; authoring and discussing with employee’s performance appraisals; addressing employee performance and corrective action plans; employee motivation and rewards. Organising the budget of the company in collaboration with the director.

Ideally the successful candidate will hold Full Transport Managers CPC qualification or be willing to take the exam. Enquire with a full CV to lucy@wrightminimix.co.uk

Read more
Tips for pouring concrete in hot weather
20th July 2020

If your concrete pour falls on a hot summer day, don’t despair, our experts share their top tips for helping you install the perfect concrete pour even in the warm weather. 

How does heat affect concrete?

Just like your laundry on a hot day, concrete dries, or cures, much quicker than usual in warmer weather. This is a problem because as part of the curing process, the concrete mix needs to hydrate (it needs to form crystals as it absorbs the water) in order to form the strength and durability the construction material is famous for. When the curing process is sped up however, the concrete struggles to form these all-important crystals which means it might not be as strong as you’d expect, resulting in cracks and weakness. 

Avoid laying concrete between 11am and 3pm

Whenever you can, avoid laying concrete between the hottest part of the day, which is usually between 11am and 3pm. This way the concrete will be able to begin to cure in cooler temperatures and so form the bonds that make this construction material so renowned for its strength and durability. 

Prepare the area before you begin 

Before you begin your concrete pour, make sure the pour site is fully prepared and the surrounding area clear so you can install the concrete quickly and efficiently. It’s also a good idea to keep any tools you’ll be using cool by storing them in a shady spot.

Create shade over the concrete

Once the concrete has been laid, try to cover as much of it up as you can by creating shade. This can be very simple, such a hanging tarpaulin or a sheet over the concrete. If there is nowhere to hang the sheets, you may need to create them yourself by installing temporary poles. 

Let the ready mix concrete professionals do it for you

Of course, the easiest way to ensure your concrete pour is successful is to call in the professionals. Opting for ready mixed concrete means you can get on with the pour directly from the truck, so the concrete spends less time exposed to the air. It also means experts, who understand precisely how concrete is made, will mix your concrete to guarantee it’s the right mix for your needs. 


We’re the leading manufacturer and supplier of ready mix concrete, liquid screed and concrete pumps for the South West. Our friendly team have a wealth of knowledge to help ensure you get the precise ready mix concrete you need. To learn more or arrange your quotation, get in touch today on 0117 958 2090

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