Why Keystone?

Keystone Preservation is the most accredited surface cleaning company in the UK. Our ‘Excellence as Standard’ approach has seen us being awarded with ISO9001 2015, ISO14001 : 2015, OHSAS18001 : 2007 and PAS99:2012. Keystone Preservation is also proud of our industry accreditation’s DOFF and TORC Rosette Scheme, CHAS, Safe Contractor and our membership to The Guild of Master Craftsmen.

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Keystone in action

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what makes us different

We specialise in stone cleaning and restoration using our Doff steam system.

Doff is a steam based surface cleaning system. It is unlike any other steam system and removes many different types of paint/dirt/biological matter without damage.

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For more information, please get in touch with our team: