This project represents the most extensive internal and external restoration initiative we have undertaken to date.
The scope of work was wide-ranging and complex, encompassing multiple elements across both the historic and modern parts of the site. As the principal contractor, we were responsible for delivering a full DOFF steam cleaning to designated areas of the castle façade, carefully removing biological growth and surface pollutants without damaging the historic stonework.
We also carried out detailed stone indenting, rebuilt degraded masonry sections, repointed significant portions of the structure, and performed targeted Lithomex repairs to the external elevations. These efforts were essential to preserve the building’s architectural integrity while enhancing its longevity.
Internally, the project involved the full refurbishment of the Gatehouse and adjacent newer structures, which were sensitively converted into functional office and community spaces. In the Palace and Keep, we completed extensive plastering and full decorative works to prepare the interior for housing the client’s world-class collection.
This restoration not only stabilized and conserved a vital historic asset but also brought new life to its spaces, ensuring they remain both functional and accessible for future generations.
Dean Castle, located in Kilmarnock, East Ayrshire, is a striking example of medieval Scottish architecture, and its masonry construction tells the story of resilience, craftsmanship, and historic ingenuity.
The castle’s oldest section, the Keep, dates back to the 14th century and features coursed rubble masonry—a technique common in Scottish fortifications of the time. Built primarily from locally quarried sandstone, the walls are impressively thick, providing both defense and insulation. The stones are irregularly shaped but skillfully laid, demonstrating the hands-on expertise of medieval masons who worked without modern tools.
The Palace, added in the 15th century, reflects a more refined style, using ashlar masonry in certain elements such as window surrounds, doorways, and corner quoins. This dressed stone provides contrast to the rougher rubble walls and showcases the evolution of masonry techniques as the castle transitioned from a defensive stronghold to a more domestic residence.
Recent conservation efforts have focused on preserving the original fabric while stabilizing weathered sections. Stone-by-stone restoration work has respected traditional methods, using lime mortar and carefully matched replacement stones to ensure historical accuracy and long-term durability.
Dean Castle’s masonry is more than structural—it’s a visual record of Scotland’s architectural evolution, standing strong through centuries of change.