Cathodic Protection Service

Cathodic protection (CP) is a method of controlling corrosion in metals embedded in stone, concrete and masonry by suppressing the electrochemical corrosion reaction. The metal to be protected is forced to become a cathode by either impressing a small DC current upon it, or by placing it in electrical contact with a sacrificial anode. These two methods are referred to as Impressed Current Cathodic Protection (ICCP) and Sacrificial Anode Cathodic Protection (SACP) respectively.

One of the advantages of CP is that it can provide protection without changing the immediate physical environment of the structure. By its nature, CP provides the optimum electrochemical conditions for the material being protected, thus preserving the visual appearance of the structure.

Rowan Technologies are experts in CP systems, having installed and maintained systems on a large number of prominent historic buildings and structures around the UK - click here for case studies -. We can provide custom designed systems for virtually any application, from the smallest monument to the largest cathedral. We can also supply systems for more modern buildings.


Conservation Services

Rowan Technologies provide consultancy services for the conservation and preservation of all material aspects of historic buildings, monuments and other heritage structures - click here for case studies -


Metal Roofs Advisory and Research Services

With extensive experience of both contemporary and historic structures, Rowan Technologies provides a comprehensive specification, monitoring and inspection service for all types of metallic roofs (lead, stainless steel, copper).

One of the many products developed during these research projects is the chalk-rich coating (Patination Cream) for protecting the underside of lead roofs.

A technical paper describing the development of chalk-emulsion coatings to control underside corrosion of lead roofs can be found in our publications page.