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Hi Jayne,
We've done lots of structural testing and are able to construct panels that can be used as load bearing elements for buildings up to 3 storeys high. In the UK, above 3 storeys we are required to have a separate structural frame.

To date we have worked with timber, straw and hemp and have a number of completed projects. To see them click onto http://www.modcell.co.uk/

Our approach with regard to other materials is to work bio regionally. ie source materials that are available locally. For example, in the UK we combine hemp shiv (shiv is the woody core of the hemp plant that is a bi-product of making hemp fibres and hemp oil) and bind them together using lime. Lime is available throughout the world and is derived from limestone (Calcium Carbonate). Limestone was created by animals using the dissolved CO2 in the oceans of millions of years ago to make their shells and skeletons or, in other words very ancient carbon capture.

In other parts of the world, for example asia, we are testing bamboo and coconut husks to replace hemp and again bind them with lime.

I hope that answers your questions.

Craig