The following are links to useful guidance materials for anyone involved with heritage ironwork. Some are free to download, others are available to purchase.
On occasion the NHIG is able to pool together advice from industry experts to help with specific ironwork queries. The responses to these queries and the original questions can also be found here.
Maintenance of Iron Gates and Railings. Conservation, repair and maintenance by Historic Scotland, 2007The maintenance of Iron Gates and Railings (.pdf)
The Repair of Wrought and Cast Ironwork. This publication gives an introduction to the repair and maintenance of traditional domestic ironwork (both cast and wrought) such as gates and railings. It would be of interest to homeowners, but also provides a good basic introduction for heritage professionals, architects and other specifiers.
Maintenance and Repair Techniques for Traditional Cast Iron available as a free download or to purchase if you prefer a hard copy.
A brief guide to decorative ironwork in Victorian and Edwardian houses published by The Victorian Society and available to purchase