Due to its structure, EX 1 substrate is best suited to extensive green roof applications and should be installed at a depth of 80-150mm. The substrate can be installed at depths greater than 150mm but other substrates, like IN 1 are more suited for this application.

EX 1 substrate is especially suited for drought-tolerant planting schemes, with Sedum mixes suitable between 80-150mm and wildflower mixes between 120-150mm. As a result of its free draining nature, temporary irrigation may be needed to help plants establish during certain times of the year.

The plant communities planted into this substrate make it so that irrigation is generally not required on installations with this substrate. Boughton Loam can provide additional advice if needed on how best to specify and install this substrate.