Cast stone keystones

Add a focal point to windows with a cast stone keystone.

Enhance your windows with a keystone

Integrated into a window head or placed on its own above a window, a cast stone keystone is a great way to add some architectural flair to a building’s façade.

  • cast stone keystones
  • cast stone window sills and keystones by haddonstone
  • cast stone keystones
  • cast stone keystone in white by haddonstone

Standard and custom-made designs available

We have three standard designs available, all of which can either sit alone above a window or can be built into the window head. We can also create custom-made keystones to meet your individual requirements.

Download technical documents

Restoration and replication

We can supply replica cast stone keystones for use in restoration projects. Using the latest in 3D scanning technology, we’re able to carry out scans of original components onsite in order to create an exact replica. Regardless of the style or age of the building, we can help create the perfect replacement keystone.

Handmade by our experts

Every keystone we manufacture is made to order. Once CAD drawings have been supplied and approved with our technical team, our craftsmen create a unique mould to be packed with our high specification cast stone mix. We perform quality checks at every stage of the process, to ensure only the best product leaves our manufactory.

Speak to our team

Whether you’re working on a private residential or large commercial project, or if you are interested in home and garden products, our friendly and expert team are happy to discuss your requirements.

  Request a call back