High quality cast stone keystones
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.