Old Meldrum DSR, UK

THE PROJECT
Old Meldrum DSR (Distribution Service Reservoir) is an exposed water tank within the grounds of Old Meldrum Golf Club. The existing waterproof coating was beyond its service life and was failing and de-bonding in places. It also had areas of failed concrete on the vertical walls that needed to be cut out and repaired. The requirement was to remove the existing coating, mechanically prepare the deck, and apply a new, fast-setting, UV-resistant, and anti-slip coating, as well as carry out the required structural repairs. It was also critical that the finished tank blended into the surrounding area, as it sits just off the fairways of the golf course.

Morrison Construction and Fraser Bruce Group have worked with Fosroc on several Scottish Water tanks as part of the ongoing SR21 framework and investment plan. This collaborative approach was also implemented on this project to amend, develop, and deliver details and solutions for various issues faced on-site.

THE SOLUTION
Repairs to the walls were square cut back to a minimum depth of 10mm, with the substrate saturated and primed with Renderoc Primer before being reinstated with Renderoc HB45. As with other projects of this type, the same process of removing the existing waterproofing, preparing the deck, and re-instating the new waterproofing was followed. However, on this project, there was a requirement to create falls on the tank to prevent ponding and water freezing. As a precaution, Scottish Water staff had been wearing spiked shoes when walking on the deck in winter. To address this, falls were created to allow water to shed, and Nitodek FS Wearcoat walkways were installed with a larger anti-slip aggregate. Nitodek FS Topcoat was applied in RAL 6010 Grass Green to stay in keeping with the surrounding area. The Nitodek FS was terminated under the tech cover lids and sealed with Nitoseal MS600.

THE BENEFITS
Due to the 60-minute cure time of Nitodek FS, the Fraser Bruce Group was able to apply all the required layers in minimal time, keeping costs down for the contractor and client. The versatility of Nitodek FS also allowed for different build-ups in various tank areas, depending on risk and other factors. Scottish Water has the reassurance that the repair materials, deck waterproofing, and joint sealants are compatible, as they are all sourced from Fosroc and covered under a 20-year warranty.