A number of liquid applied waterproofing systems from Sika Liquid Plastics have been specified to waterproof the roof and walls of North Wales’ new National Sailing Academy.
The Welsh National Sailing Academy and Events Centre was commissioned by Gwynedd County Council to improve the local economy and increase opportunities for the community. Since its opening, it has acted as a hub for national and international sailing events.
The facility has been constructed to BREEAM ‘Excellent’ standards; it makes use of sustainable features, such as solar panels, rainwater harvesting and biomass heating.
Although impressive, the academy was a challenging build: as it sits between the dunes and marina on Pwllheli’s seafront, Ellis Williams Architects was tasked with producing an aesthetically pleasing design, which could withstand the elements.
A number of liquid applied waterproofing systems from Sika Liquid Plastics were specified for installation across the building’s envelope.
Whilst the concrete walls were coated in Sikalastic 618, a Decothane Gamma 20 system was used on the gabion walls. The liquid system waterproofed the walls down to the building’s foundations; it also worked to bond them to the roof areas, creating a waterproof junction between the two.
Decothane boasts UV stability and elastic properties, making it suitable for use on costal-located buildings. In addition, the product offers tolerance of thermal movement.
Decothane Delta 25 was used on the cold roofs, warm roofs and green roof area.
It was applied on to various primed surfaces, from concrete deck to a mix of flat board and tapered Decotherm insulation.
The roof areas were covered by timber decking and transformed into viewing galleries and café seating areas. A protective layer from Sika Liquid Plastics was used to preserve the condition of the decking.
Representatives from Sika Liquid Plastics’ technical team were available to offer guidance throughout the project. They assisted with the initial design and specification, quality control during installation and final inspection.
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