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Screed Tests and SurveysCSC Screed Testing Services

When high quality screeding products and a skilled work force can guarantee the quality of a screed to a great extent, there are a number of external factors which can affect the final quality of the screed. At CSC, we constantly strive to provide the best quality screeds through a combination of high quality products, superior workmanship and an eye for detail.

To ensure that the actual quality of the screed compares to the required standards, we carry out meticulous monitoring of the quality of materials, installation and finished screed by inspection and testing, and make sure that appropriate corrective measures are taken in the event of any non-compliance.

CSC now extends our expertise to all screeders, contractors and builders, and offers a range of screed testing services by our experts. Our range of screed testing services includes:

Level Survey by a Qualified Engineer, providing datum above sea level: 

Levelling survey is carried out by a qualified engineer, and an assistant using a dumpy level and the measurements are recorded directly in a log book. Digital levels are also widely used for achieving level measurements of high precision. The horizontal level of the plane is measured accurately by using electronic laser methods and the measurements are shown on a digital display. This ensures high accuracy levels compared to traditional methods as this helps to eliminate the chances of errors from manual measurements and interpolation of results.

Level Survey by laser level dip survey for departure
from datum:

According to British Standards, a maximum departure of 15mm from datum is considered to be satisfactory for large areas of screed intended for normal purposes, and can be measured by a 2m standard grid, using standard surveying methods. But when greater accuracy to datum might be essential for small rooms, along the line of partition walls, in the vicinity of door openings, and in areas where specialized equipment are to be placed directly on the floor, laser level dip survey can ensure high levels of precision for such uses.

Surface Regularity Testing:

In compliance with BS8204-1:2003 & A1:2009, the surface regularity of the screed is checked by using a 2m long straightedge laid in contact with the floor surface. Deviations of the floor surface from the underside of the straightedge are measured using a slip gauge or other accurate measuring devices. Initiating the tests shortly after the installation of the screeds can help in establishing that the construction methods adopted can yield the specified pre-requisites, and also enable modifications wherever necessary.

BRE Drop Hammer Test:

The test is carried out to identify whether the set and hardened screed is strong enough to withstand the traffic in service, without breaking down. The test can be effectively used for assessing the requirement for remedial measures in cases where the mix proportions, mixing or compaction are suspected to be inadequate.

In accordance with BS8204, the BRE drop hammer test is carried out by subjecting the screed to repeated impact blows by dropping an annular weight vertically down a guide on to a hardened steel anvil which is in contact with the screed surface. The depth of the indentation from the resulting impact after four blows is measured to assess the ‘soundness of the screed’ or its ability to carry traffic without crushing under the imposed weight.

​​​​Moisture Test by Calcium Carbide Method
or Tramex Meter:

Moisture testing for screeds is one of the important types of constructional monitoring, essential for controlling the persistent problem of screed failures arising from inaccurate assessment of drying times. The accurate prediction of drying times ​of standard screeds often being a difficult task, moisture retention in screeds is ​​a major problem that can disrupt moisture-sensitive floor finishes.

Calcium Carbide Method is one of the popular forms of moisture testing where the moisture content of samples are assessed by using carbide moisture meter.

Tramex Meters are pocket sized electronic meters which help to measure the average moisture content of screeds without damaging the screeded surface. This is a non-destructive testing method that provides indicative results. In case of suspicious results, it is ideal to go  for Calcium Carbide Method.

Get Testing from the Experts and Advice
from the Screed Doctor

Now, if you would like to get your screeds assessed by the experts, all you need to do is call our friendly staff on 0845 500 4055…

Be it for dispute resolution or for ensuring an accurate screed assessment, you can rely on us for impartial advice, backed by the most accurate results. All screed tests are carried out by our expert team in a highly professional and scientific manner.

To know more about our screed testing services, just pick up your phone and give us a call today…

As the CSC Screed Doctor says “We’ve got it covered!”

For us at CSC – accuracy, precision and attention to detail matter…and that is just what makes our tests the most reliable in the industry!

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