Keystone Stone - High quality products from Procter Cast Stone

Cast Stone Keystones KS034
Cast Stone Keystones KS034
Cast Stone Keystones KS002
Cast Stone Keystones KS002
Cast Stone Keystones KS039
Cast Stone Keystones KS039
Cast Stone Keystones KS741
Cast Stone Keystones KS741
Cast Stone Keystones KS750
Cast Stone Keystones KS750


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A keystone stone is the wedge-shaped stone at the apex of a vault or arch, or similar shaped window or door.  If used structurally (with cast stone it can also be purely cosmetic as a facing with an actual keystone behind), the keystone is the final piece placed during construction and locks all the stones into position and therefore allows the arch to bear weight.   

Cast stone keystones for new builds

Keystones used for arched windows and doors are an attractive addition to a more traditional new property, with research showing that the use of cast stone features adds value to new properties.

Cast stone keystones for renovation projects

Using a cast stone keystone to replace a keystone in natural stone on a renovation project is ideal, as the replacement cast stone keystone can be colour matched to other existing natural stonework.  The finish of the cast stone replacement will be highly authentic, and this the result of our huge expertise and experience in cast stone technology.  

We supply standard keystones in a range of styles and colours, with options for both structural keystones and those which are effectively a facing to a separate structural piece.  If our standard range is not suitable for your requirements, we are able to produce bespoke cast stone keystones in any design and colour. 
cast stone keystone drawing
Procter Cast Stone also supplies bespoke arches to match any designs Also see cast stone heads for windows or doors can be made in any required styles or colours. 

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