Terra cotta structural failures result from water penetration, stresses from building expansion and contraction, difficulties in firing during fabrication as well as differences in the behavior between the supporting clay bodies and glazes.

Terra cotta is a naturally moist material making it ideal for moss growth over time. That moss keeps the moisture trapped inside the terra cotta, causing the tile to become soft. R.E. Kelley, Inc. experts will determine whether proper anchoring, waterproofing and expansion allowances can be made. If so, the damaged terra cotta may be repaired on-site or removed and repaired off-site.