With new planning rules to abide by in Dublin, the developers of a commercial three-storey residential apartment building had to demonstrate that their scheme would have a blue green roof to obtain planning permission.
ACO worked together with the contractor to design and specify an innovative blue green system that would manage stormwater runoff, improve resilience, and be the first of its kind in the city. A key part of the consultation was ACO’s assessment of the hydraulic requirements, which was based on one in 100-year time series rainfall, as well as accounting for a 40 per cent uplift in climate change.
Following the assessment, ACO specified its ROOFBLOXX attenuation system to cover a catchment area of 131.8 m2, installed on an inverted blue roof. Introducing the ACO solution to an inverted roof separated the competing drainage requirements. By engineering an elevated shallow structural attenuation system that operates independently of the flat roof drainage system, it allowed the roof to be engineered to known standards and best practice, without compromising the ability of the roof to drain quickly in extreme circumstances.
A spokesman for the contractors who led the project said:
When we were approached about this job, we knew we’d need guidance from blue roof specialists. We turned to ACO because we know they not only have innovative products like the RoofBloxx system, but they have the knowledge, experience and assisting tools to make sure that the job runs smoothly.
With ACO’s support, the project was swiftly granted planning approval, and we and the developers have peace of mind that the roof is protected for years to come.”
