Pull off and pull out testing to BS 8539

With over 20 years’ experience, our expert structural investigation team specialise in carrying out tensile and shear tests on a variety of structural fixings attached to/inserted into walls, beams and more. We can tensile test rebar, threaded bar and the majority of structural fixings including…

  • Eye bolts
  • Stud anchors
  • Anchor bolts
  • Resin bolts and more.

Carried out to British Standard BS 8539, our pull out testing services can help identify damage to concrete structures or fixings, helping you to avoid potentially dangerous and concrete failures. They can also be used to test the ability of a fixing to take a specific load and are often referred to as a shear test or a tensile load test of structural fixings.

When it comes to pull off tests, however, these are used to assess the tensile bond between two surfaces or materials, examples being two layers of sprayed concrete or render coatings.

Pull off testing involves a stud being affixed to the material that requires testing. The stud is attached using an adhesive that must be stronger than the bond strength to be tested. In most cases, mechanical equipment will be used but, where greater levels of accuracy are required, more advanced, automated tools may be more appropriate.

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    Pull off and pull out testing


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    • Our standard equipment can test from 1kN up to 200kN. We can test to a higher load if required and requested - please get in touch for more information.

    • We can carry out pull out and pull off tests on bard ranging from 6mm up to 32mm. We can test both threaded bars and reinforcement bars. Upon request, we can also test larger diameters than 32mm.

    • Yes, our senior engineers have been awarded certificates of compliance from the Construction Fixings Association.

    • British Standard BS 8539 requires a minimum of 5 pull-off tests per area.

    • We're based in Watford in Hertfordshire, not far from London, but we regularly travel throughout the UK including Bedfordshire, Middlesex, Buckinghamshire and Surrey to support our clients.

    • Whilst every project is different, we charge based on a competitive day rate. Simply get in touch for a tailored quotation.

    • Many of our clients are initially unsure as to exactly what type of testing is needed to capture the information their projects require. If that sounds like you, just get in touch and a member of our team will advise on the most appropriate and cost-effective approach to take.

    • Absolutely. Whilst the majority of our works are carried out during normal working hours between Monday and Friday, we understand that this won't be possible for every client. That's why we offer an out of hours and weekend working service available upon request.

    • On the whole, our lead time for site work is between 1-2 weeks from receipt of an instruction. That said, we completely understand that some projects require a more immediate response and will always do our best to accommodate urgent requests.

    • Yes. All of our engineers are trained to work at height with PASMA and IPAF certification. We can also bring any necessary access equipment with us - such as a tower or MEWP - as necessary.

    • Yes. We have a number of highly experienced engineers who have confined space training.

    • Whilst this can vary due to nature of each individual project, we typically aim to deliver our reports within 10 working days of the site work having been completed.

    Why choose Perry Testing?

    Time served professionals

    Every one of our engineers and technicians has at least 10 years' experience in structural investigation, scanning and materials testing.

    Easy-to-read, concise reports

    Our beautifully formatted reports are delivered promptly whilst getting straight to the point, providing the data you need direct to your inbox.

    Professional, friendly staff

    We take pride in the professionalism and attitude of our staff. From first contact to reporting, we'll treat you as we'd like to be treated ourselves.

    Proven track record

    Every year, we complete hundreds of projects for a truly loyal client base, firms that return time after time, confident in the service they'll receive.

    Nationwide service

    Our teams travel the length and breadth of the UK, delivering structural investigation and testing services on a truly diverse range of sites.

    Reduced risk and costs

    Using the very latest technology and techniques, we help reduce unexpected costs, keeping your team, project and organisation safe in the process.

    "Perry Testing are more than just another surveying company, they provide modern solutions to real problems. Always a pleasure to work with them."

    — Ben Joshua, Senior Engineer, Keltbray

    "We have engaged Perry Testing on a range and number of projects to provide scanning, sampling, and testing and always found them responsive and their reports to be high quality and informative. I would highly recommend them."

    — Malcolm Brady, Director, MBP

    "I have worked with Perry Testing Limited on several projects over the past 3 or 4 years, and they have always responded to our requests at very short notice, providing a professional, expert service every time."

    — Ben White, Managing Quantity Surveyor, United Living

    Pull off and pull out testing

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