Customer: Private Client
Timeframe: 3 days
Sector: Domestic
Products used: PrimeMore CS, LevelMore Flex&Fibre
The project: Following a structural failure during underpinning works, the property required a full rebuild. After experiencing poor workmanship earlier in the project, the client placed a strong emphasis on quality materials and a dependable installation process for the flooring stage of the project.
Why were these Kelmore products used? Upon initial inspection of the newly installed slab, it was believed that a cement-based pump screed had been used. However, further assessment confirmed the substrate was in fact calcium sulphate.
The client was advised on appropriate drying times, factoring in additional plastering works scheduled prior to installation. The team carried out a pre-installation visit to assess moisture levels and ensure the screed was suitably prepared. Fortunately, the laitance had already been removed from the screed, allowing it to dry effectively and making it suitable for further stages of preparation.
Given the previous issues on the project, a thorough and methodical approach to inspection, planning, and product selection was essential. Site logistics also presented challenges, with limited access to power and water, and a complex floor layout requiring multiple areas to be poured simultaneously while maintaining several wet edges.
The team selected Kelmore’s PrimeMore CS and LevelMore Flex&Fibre to ensure compatibility with the calcium sulphate substrate and to deliver a durable, high-quality finish.
For optimal adhesion, it was ensured that the screed, which covered an area of 100sqm, was free of from any contaminants. This included thoroughly vacuuming the entire area.
Once it was confirmed that all laitance and surface contaminants were removed and that the screed was dry, a neat coat of PrimeMore CS was applied. To ensure complete coverage, a medium-pile roller was used for the main areas and a brush for the edges. This created a consistent barrier layer, preventing direct interaction between the calcium sulphate screed and the cement-based smoothing compound, while also regulating surface porosity.
After approximately 60 minutes, the primer was dry, allowing installation of the smoothing compound to begin.
Due to the size of the area and layout constraints, efficient mixing and application were critical:
• LevelMore Flex&Fibre was mixed in batches of three bags at a time using our large mixing buckets
• A controlled water dosing system ensured consistency across mixes
• Each batch was thoroughly blended before application to prevent inconsistencies
Once mixed, the compound was applied. By using a CAM rake, the required thickness was maintained throughout. To further enhance the compound’s surface finish, a spiked roller was also used.
The 30-minute working time of LevelMore Flex&Fibre proved particularly valuable, allowing the team to manage multiple wet edges across different areas of the property without compromising the finish and the primed surface also contributed to improved workability and consistency during installation.
Despite the logistical challenges, clear coordination and a structured approach allowed the installation to proceed efficiently across all areas.
The finished results: The completed floor achieved a smooth, uniform finish across the entire 100sqm area, meeting and exceeding SR1 standards.
The final surface required no additional feathering or remedial work, providing a strong and reliable base for subsequent floor finishes.
Feedback from both the client and other trades on site was highly positive, with particular recognition of the overall standard of workmanship, from meticulous preparation through to the high-quality finish.
Carters Prestige
