About QST Ltd
A leading provider of innovative construction services since our establishment in 2004.
With a deep understanding of the complexities involved in concrete restoration, we employ advanced techniques and high-quality materials to address issues such as cracks, spalling, and deterioration
Structural concrete repairs involve the restoration and reinforcement of concrete structures that have suffered damage due to factors such as environmental wear, corrosion, or structural overload. This process typically includes assessing the extent of the damage, removing compromised concrete, and implementing various repair techniques to ensure the integrity and longevity of the structure.
Repair methods may range from patching small cracks and spalling to more extensive interventions like installing steel reinforcements or applying fibre-reinforced polymers. Additionally, techniques such as epoxy injection, grouting, and surface treatments are often employed to enhance the durability and aesthetic appeal of the repaired surface.
A concrete structural repair survey is a systematic process used to assess the condition of reinforced concrete structures, identify defects, determine the causes of deterioration, and develop an appropriate
repair strategy.
The survey typically begins with a visual inspection to locate surface defects such as cracks, spalling, delamination, or corrosion staining. This is followed by non-destructive testing (NDT) methods—such as hammer tapping, cover meter surveys, half-cell
potential, or ultrasonic pulse velocity testing—to evaluate internal conditions without damaging the structure. In some cases, destructive tests like core sampling and laboratory analysis are carried out to determine compressive strength, carbonation depth, and chloride content.
The data gathered are then analysed to establish the extent of deterioration, the root causes (e.g., corrosion of reinforcement, freeze–thaw cycles, chemical attack), and to inform the design of a suitable repair methodology.
The process and assessment criteria are guided by relevant British Standards (BS) and European Norms (EN), primarily:
Upon completion of all surveying and analysis of sample data a repair strategy can be formulated and a written report generated detailing all defects.
The repair process typically begins with a thorough assessment of the damage, which may include visual inspections, non-destructive testing, and concrete core sampling. Once the extent and cause of the damage are understood, appropriate repair methods can be selected. These methods may include:
Using specifically designed resin/grout systems to pin, support and strengthen existing bridge and monument structures to acceptable performance and safety levels as required.
Crack injection systems installed to strengthen and support all aspects of failing concrete structures old and new installs.
All aspects of ground anchoring, soil nailing and cliff support systems installed and monitored. Full design input service available to support the project engineers with the most up to date systems currently in the construction market.
All systems approved and tested by the manufacturer and installed to all current guidelines. All staff trained and competent on all aspects of the install and machinery to the current guidelines and industry standards.
At QST Construction Services Ltd, we specialise in brickwork remediation, restoration, and new build works, combining traditional craftsmanship with modern construction techniques to deliver projects of lasting quality. Our experienced team works across a diverse range of schemes — from heritage and listed building restoration to contemporary new developments — ensuring each project is completed with precision, care, and full compliance with current standards.
For heritage and conservation projects, we adopt a sensitive, materials-led approach that respects the historic fabric of each structure. Using lime mortar systems, we promote flexibility, breathability, and authenticity, preventing trapped moisture and ensuring long-term durability. Our methods align with conservation best practice, preserving both the structural integrity and the aesthetic value of the original masonry.
Our brickwork remediation services cover the repair and repointing of defective or weathered masonry, structural stitching, brick replacement, and façade restoration. We ensure material and colour matching to maintain architectural consistency and visual harmony, supported by detailed survey and specification processes.
All works are carried out in accordance with relevant standards and guidance, including:
At QST, our approach ensures every project — whether historic or new — is built with technical integrity, respect for its context, and a commitment to the highest standards of workmanship and compliance.
Using specifically designed equipment from Electro-Tech CP systems, QST can offer a new build or refurbishment system designed and installed to suit the needs of the project. Passive cathodes installed in localised areas of rebar to actively control corrosion in highly chemical or climatic areas such as swimming pools, water treatment works and saltwater environments.
QST offers a fully designed and installed system to suit the requirements of the project and required lifespan of the structure through impressed current systems or passive anodes installed to act as a sacrificial element for corrosion.
All systems approved and tested by the manufacturer and installed in accordance with current guidelines.
Choose QST Construction Services Ltd for expert structural repairs and innovative solutions. With 30+ years of experience, we deliver exceptional results. Contact us today!
