What structural load does a blue roof impose?

The usual depth of the stored water on a blue roof is unlikely to be more than 100-150mm in depth,  as such the increased load imposed  by a blue roof is minimal (1.0-1.5kN/M2 load). However, a detailed structural analysis should be carried out by a suitably qualified engineer. As most blue roofs are designed in conjunction with a green roof build up, they will tend to require a concrete slab to be specified.  

To view full product details please visit www.aco.co.uk