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Laitance removal is an essential part of the whole floor screed process and in many cases is overlooked, and the result is, in time, floor coverings will not bind or ‘stick’ to the liquid screed floor and become loose, losing the impact of installing such a level. It is vital that an allocated time is booked with your screed sanding company to return between seven and ten days after your liquid screed floor is installed to carry out the screed sanding process.

Laitance removal is a sanding process and we offer complete reassurance that our specialist technology will extract as many dust particles during the screed sanding to remove the dust and debris safely, thus removing laitance from screed. Laitance removal should be carried out by a trusted and experienced professional. There are several methods to removing laitance from screed. They are mechanical planing, shot blasting, scrabbling, grinding and abrading. Precision handheld grinding machines are designed for use in smaller projects and finer detail finishes. will advise on which sand screeding technique to use on removing laitance from screed dependent on the size of design and build project, the thickness of the liquid screed depth and the type of particles formed. If you are installing a water under floor heating system, then part of the project’s costing should include an underfloor heating cost element. It is highly recommended to use a qualified sand screeding company.

At, as a sand screeding company, we offer all after-care laitance removal services once your screed floor is in place. This will increase longevity, durability and quality in the final finish. Please be assured laitance removal costs are factored into all our floor screeding prices and quotes, as too is moisture testing.

Please call on 01452 931280 or email us for further advice or a liquid screed cost quote. As professional floor screeding contractors, we are more than happy to talk through your liquid screed project with you and provide you with the best options for a perfect, smooth finish.

REMOVING LAITANCE FROM SCREED offers a full screed sanding service known as laitance removal. Laitance is a weak layer on the surface of the concrete screed floor and sand cement screeds which appears during the initial hardening of a screed floor. This layer cannot be tiled onto and failure to remove it will slow down the drying process as well as delamination of the subsequent floor coverings. By applying a grinding, rotary machine to this layer breaks down the laitance to leave a floor ready for the desired floor covering – this is known as removing laitance from the screed.

The removal of laitance should be carried out by professional screeding contractors. Laitance can build up in varying degrees of thickness. At we have experience in identifying and treating these varying thickness levels and we offer a full laitance removal service using our specialist, fully dust-extracted sanding machines.


As discussed earlier in this section, failure to apply a screed sanding process to your new liquid screed floor will result in a weak quality layer and as a result any additional floor coverings will not work.

  • Surface preparation is essential to ALL liquid screed floors prepared by
  • Removing laitance from screed is paramount to a successful floor installation
  • Laitance removal will prevent the floor levels fluctuating or cracking at a later date
  • It negates the need for costly corrections at a later date

What our customers say

“I had never heard of laitance before and thank you to who, from the outset, recommended the process of laitance removal. On discussing it with colleagues, I heard some very adverse stories in a similar building project where shortcuts were taken. The upfront advice from gave reassurance from start to finish in our project – the final floor finish looks great!”


When does laitance removal begin?
The laitance removal process can commence from seven to fourteen days after the installation of your liquid screed as part of your wet underfloor heating installation. will pre-book the time slot to carry out this laitance removal work at the same time as booking in the liquid floor screed installation, so your project runs smoothly from start to finish with no unnecessary delay. It is highly advised that a specialist sand screeding service is used.

Do I need to worry about the dust produced during laitance removal?
Laitance removal is a screed sanding process and our specialist technology will extract as many dust particles during the screed sanding to remove the dust and debris safely.

Can I sand the floor myself?
We strongly advise that you employ a specialist screeding company to carry out the screed sanding. You probably wouldn’t attempt to install an underfloor heating system and we would recommend you don’t attempt to sand the floor yourself.

In essence, you can carry out the work yourself, but it is imperative that you do not over-sand or under-sand in removing laitance from screed. At we will assess the depth and type of laitance particles to fully advise you of the best process to treat and remove this layer. It is, in the long-run, more cost effective to use a liquid screed suppliers laitance removal service complete with all the equipment and apply specialist knowledge to ensure a quality and correct finish in laitance removal.

What causes Laitance in concrete?
Typically a liquid screed is applied when an underfloor heating installation is planned – laitance is caused by very fine aggregates and hydrated cement particles rise to the surface during the curing process.

What does Curing Concrete mean?
It is a process which is defined as providing adequate temperature, moisture and time to allow the concrete to achieve its desired properties for the use to which it is intended.

Call 01452 931280 or request a free quote



Liquid Screed

A fast laying, quick drying and environmentally friendly alternative to the traditional sand and cement screeds.

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Water Underfloor Heating

Combining water underfloor heating with liquid screed to optimise heat transfer to the surface of the floor.

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Moisture Testing

Testing to ensure screed moisture content meets installation regulations prior to laying any floor coverings.

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