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Clay boards and plasters

On this page we look at our clay building products. Firstly, our EBB clay building boards are a sustainable alternative to gypsum plasterboards and have many additional benefits. They combine the advantages of drywall construction for internal walls and ceilings with the amazing properties of clay as a sustainable, healthy and versatile material.

Secondly, clay building products add significantly to the thermal mass of a structure and by buffering humidity well they passively optimise the relative humidity of the internal climate. This high mass gives rise to un-rivalled sound absorption qualities and importantly, since clay doesn’t burn the boards are A1 fire rated which provides a sustainable way to create fire barriers.

Finally, the EBB boards can be finished with our Baumit Viton clay plasters to fully utilise all of the benefits of the material or a more robust lime plaster such as Baumit RK38 can be used instead.

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CPD Training

We offer CPD training for architects practices across Devon and Cornwall.

Software Modelling

We offer dynamic heat and moisture modelling as well as condensation risk analyses.

Building Plan Review

If you have some plans and would like our opinion on which materials would be the best for you, contact us.


Back to Earth is a natural building material supplier. We're not your typical builders'​ merchant though and instead work closely with our clients during the planning, designing and building phases of projects.

Back to Earth is a proud signatory of the Anti-Greenwash Charter:

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