FAQs

Concrete cube testing is the standard method for verifying the compressive strength of concrete used in construction. Cubes are cast from fresh concrete, cured under controlled conditions, and crushed in a laboratory to measure strength in N/mm². It is a key compliance requirement under BS EN 12390 and is required on most UK construction projects to confirm the concrete meets the specified design strength.

For on-site tests such as slump tests and plate bearing tests, same-day written results are available. For cube testing, results are issued after the curing period at 7 or 28 days as required by your specification. Contact us to discuss your specific turnaround requirements.

Yes. Our trained technicians visit your site to carry out cube sampling, slump tests, plate bearing tests and lightweight deflectometer tests. We serve construction sites across London and the South East.

We are based in South East London and provide on-site testing services across London and the South East of England. If you are unsure whether we cover your location, call us on 0203 659 0524 and we will confirm.

Yes. CTSL holds UKAS accreditation for a range of our testing services. UKAS (United Kingdom Accreditation Service) is the national accreditation body for the UK. You can view and download our full accreditation schedule from the UKAS website.

Yes. We accept sample drop-offs at our South East London laboratory. Please call ahead to confirm availability and to ensure your samples are correctly labelled with pour date, mix design reference, and required test ages.