While many of history’s finest architects chose to adorn their masterpieces with architectural terra cotta, this material is no longer used much in new construction. In addition, many terracotta elements that once made structures so magnificent are now deteriorated or completely destroyed. Luckily, there are advanced materials – including fiberglass reinforced terracotta, glass fiber reinforced concrete, and fiberglass reinforced polymer – that can be used to repair or replace original architectural terracotta. The following tips should be kept in mind during terracotta restoration or renovation projects:
Matching the appearance of the original architectural terracotta is crucial.
When choosing a replacement material, it’s natural to consider price, weight, and durability. Perhaps more important than all of these, however, is finding a material that can replicate the texture and color of the original terracotta. Otherwise, repairs will be conspicuous.
All sections of damaged material must be removed and replaced.
When architectural terra cotta is being replaced, it may be tempting to try to remove a portion of a piece or block to save time and money. This is not a good strategy, though, and there will likely be problems with the remaining piece of terracotta down the road. To do the job right, remove and replace the entire section that is worn or damaged.
Visible anchorage will reduce the appeal of architectural terra cotta elements.
If you hire someone to replace damaged terracotta, make it clear that you want all anchorage concealed. While anchorage is necessary to support and secure terracotta, passersby should not be able to see it.
Do not try to re-anchor architectural terra cotta.
When terracotta is loose or worn, some people may conclude that re-anchoring the terracotta is the answer. Because it is usually secured with interlocking assemblies, steel straps, and mortar, however, re-anchoring is extremely difficult and, in many cases, impossible. Instead, any damaged terracotta should be removed and replaced.
Get a professional to take care of terracotta replacement and repair.
Everybody likes to save money by doing things on their own, but unless you are highly knowledgeable about architectural terracotta, it’s wise to hire a professional. If you complete the terracotta replacement or repair incorrectly, it’s likely more repairs will be needed in the future. Elements like cornice and window surrounds crafted from architectural terracotta could also be potentially dangerous – if not securely anchored to the building, they could fall and cause serious injuries or even death.