RSM Lining Supplies Global Ltd launched their renowned training courses back in the summer of 2021 and have since had over 730 engineers pass. The training courses were developed with the goal of standardising practices across the sewer rehabilitation industry, ensuring contractors adhere to stringent guidelines on site to guarantee high-quality installations every time. By offering the only training courses in the industry both approved by the WRc Group and certified by Energy & Utility Skills, RSM’s training is the gold standard, offering confidence to the contractor and the end user that operatives are trained to a professional level. Additionally, certifications can be referenced in tenders or qualification frameworks where competency evidence is required.
All training is conducted at RSM’s Head Office in Doncaster. Due to increasing demand, they invested further in their facilities in early 2025 and constructed a purpose-built mezzanine for practical demonstrations & assessments. The company offers a variety of courses, namely CIPP Lining & Patching Training and CIPP Patching Training. Certification on these courses is valid for three years from date of completion, once this has expired, Refresher courses are available to ensure competency and extend the qualification for a further three years.
On all courses attendees have the opportunity to learn best practices and expert techniques from RSM’s experienced CIPP specialists, who have decades of experience in CIPP operations, on-site support, and consultancy.
The training courses equip operatives with the practical skills required to carry out CIPP lining and patching installations efficiently and correctly. A mixture of classroom-based and practical activities ensures a well-rounded education - this dual approach helps attendees understand not just the “why” but also the “how” behind each repair method, boosting both confidence and the ability for attendees to successfully conduct repairs in the real world. The training courses are assessed with both written and practical assessments to ensure the participant has a full understanding of the course content.
All training places strong emphasis on safe working practices and correct material handling, assisting contractors in meeting industry guidelines and client expectations. Operatives learn how to manage resins, equipment, and curing processes safely and responsibly, reducing the likelihood of incidents. This supports contractors and asset owners in demonstrating compliance during audits and maintaining a strong health and safety culture.
Having operatives trained and accredited through RSM provides clear evidence of competency and professionalism. This can be used to strengthen tender submissions, particularly for Water Companies, Local Authorities, and Regulated Utilities where demonstratable skills and qualifications are essential. Clients gain confidence knowing work is being carried out by trained personnel using recognised best practices.
The courses provide attendees with a deeper understanding of when and how different techniques should be applied, enabling engineers, supervisors and site teams to make informed decisions on repair method selection, material choice, and installation approach, improving efficiency whilst reducing unnecessary costs.
The CIPP Lining & Patching Training Course aims to provide an understanding of all levels of CIPP Lining & Patching, offering confidence that attendees can successfully install liners and patches in diameters up to 300mm. An intensive two-day course, it covers both basic and intermediate installation techniques, offering hands-on training for practical skill development. It also introduces advanced methodologies such as Hot Cure lining, including an overview of UV and UV LED lining technologies. The course is designed to ensure safe, efficient, and high-quality CIPP installations.
RSM’s CIPP Patching Training Course is designed for engineers just starting out in the world of CIPP, educating the course attendee on the correct methodology to complete a successful patch installation in diameters up to 300mm. An intensive one-day course, it introduces CIPP design principles, guiding attendees on effective site investigation and repair selection. The training focuses on practical skills for localised patch repairs, including live installation demonstrations to reinforce learning.
Upon successful completion of each course, participants receive a nationally recognised EU Skills accredited qualification, which is also approved by the WRc Group. This certification validates the attendee’s competency in CIPP lining and/or patching, ensuring they are compliant with UK industry standards and best practices.
If you’ve previously undertaken one of the above courses but your certification has lapsed after three years, you can renew your qualification by attending one of RSM’s refresher courses. The CIPP Lining & Patching Refresher Course reinforces core knowledge from initial certification training, including practical hands-on assessments for patch repair and ambient cure CIPP lining. The CIPP Patching Refresher provides updates on industry best practices for CIPP patch repairs in diameters up to 300mm.
By up-skilling operatives, contractors can confidently broaden their offerings for sewer rehabilitation. RSM’s training supports the delivery of patch repairs, full-length lining, and multiple curing methods, allowing contractors to take on a wider range of projects. This creates opportunities to grow service portfolios and deliver higher-value rehabilitation solutions.
RSM’s Sales Director, Phil Steele, remarked: “Offering certified training had been an idea of mine for many years before we introduced the initial courses back in 2021. It had become increasingly apparent that there was no standardisation of CIPP repair techniques within the industry, and no requirement for engineers to have any formal qualifications – this was ultimately leading to failed and poor-quality installations. We introduced our training to empower contractors with the technical knowledge and practical skills they need to succeed on site, and I strongly believe the training that we offer is heavily contributing towards the standardisation of CIPP repairs across the industry, ensuring high-quality, long-lasting rehabilitation.”
Correctly installed CIPP solutions play a critical role in extending the life of underground assets. RSM’s training helps ensure installations are carried out to the correct standard, improving durability performance. Asset owners benefit from reduced maintenance requirements, fewer failures and improved lifetime asset value.
Rather than just a supplier, RSM are an extension of your team – with a goal to increase the quality of workmanship in the industry to ensure correct practices lead to a quality product for the asset owner.

