Founded in 1624, the Latymer School has provided an excellent education to the young people of Edmonton and its surrounding areas in North London for almost 400 years. Over the course of its existence, the school community has expanded and diversified, evolving into an incredibly inclusive school with a great tradition of success. Situated in Haselbury, London, the school recently embarked on a significant waterproofing project measuring 1900m² over two roofing areas.
After a comprehensive survey, carried out by Cookson’s Consultancy Ltd, Polyroof Products were selected to provide the waterproofing system, with Skyline Roofing at the helm of the installation.
The extensive roof survey involved an in-depth inspection of the existing single ply membrane. Any defects found were repaired, ensuring that the insulation and underlying substrate were in optimal condition to provide a solid base for overlaying with the BBA-approved, low odour, Protec Evolve System.
Additionally, all areas to be treated were thoroughly cleaned to remove dirt, debris, surface water, and any undesirable growth such as mould or moss. Areas with fungal growth or moss were treated with Polykill W Anti-Fungal Wash to ensure the destruction of spores, and power washing was employed to remove residues. Any areas with loose or dis-bonded single-ply membrane were suitably re-fixed prior to coating, and local damage was repaired or made good as appropriate.
Adhesion tests identified that the application of primer would be required before the first coat of Protec Evolve Resin. Wet or saturated substrates were fully dried out before any products were applied.
The roof survey also addressed detailing at specific areas such as wall abutments, edge details, rooflights, protrusions/plinths, and internal outlets. Each of these components was carefully inspected and, when necessary, repaired or made good to ensure the Protec Evolve System could be integrated seamlessly. The cold applied Protec System was originally chosen to provide a flexible and seamless membrane that eliminated the risk of water ingress around penetration points from the large amounts of plant that is located on the roof. However, due to the school still being partially open during the summer break, the low odour Protec Evolve System was chosen to carry out the final works.
All areas of the roof required priming with Polyroof SP 202-Primer before the first coat of the Protec Evolve System could then be installed in conjunction with Polymat 450 reinforcement. The first coat Protec Evolve was applied and allowed to cure and, due to the system’s Rapid Cure technology, could be walked on just 30-60 minutes after applications. Due to exceptionally high levels of rain in August 2023, the first coat was imperative to the project. This allowed for large roof areas to be made fully waterproof within a matter of hours. The Skyline team could then return to site during breaks in the long periods of rainfall to apply the top coat and complete the installation. Throughout the project, the Polyroof Technical team made regular site visits to ensure best practise and provide installation guidance as required.
During the project, safety and environmental considerations were paramount. Personal Protective Equipment (PPE) was mandatory at all times, with Material Safety Data Sheets (MSDS) readily available for guidance. Risk assessments and method statements were conducted by the Skyline team to ensure that the work proceeded safely.
The quality of the workmanship, coupled with the right choice of roofing material made for a superior refurbishment solution that remedied all existing issues. Upon completion, a final inspection by the Polyroof Technical Team, led to the roof being signed off and guaranteed, giving the client complete peace of mind that their roof will be fully watertight. The client was delighted with the finished roof and will have guaranteed peace of mind for decades to come.
Want to know more about our Low Odour Protec Evolve System? https://polyroof.co.uk/systems/protec-evolve-system/