This detail illustrates a modern rebuild strategy for replacing existing architectural terra cotta (TC) lintel, soffit, and accessory units around window openings. The existing TC is replaced with new hand-pressed TC units, installed not filled, with weep holes at the underside of each overhanging unit; each secured with new stainless-steel anchorage. In restoring and rebuilding these historic wall systems, moisture mitigation is critical to their long-term preservation and performance. Moisture management measures in this detail include horizontal skyward-facing joint treatment of sealant or lead T-caps, and an integrated flashing system installed to protect existing structural steel. The flashing system consists of a self-adhering flashing with ends dams secured by a termination bar with continuous sealant, a stainless-steel drip edge, and weeps in the vertical joints. Accessible existing structural steel is also protected by cleaning and coating with a corrosion-inhibiting coating. These TC rebuild details illustrate general best practices. Specific project conditions, configuration, and details will vary and shall be determined by the design professional.

We’ve also included a modern rendering of an original detail in Plate 36 of Terra Cotta Standard Construction, published by the National Terra Cotta Society in 1927. This detail is a general example of appropriate architectural terra cotta design and detailing at the time of publication. Specifically, this detail illustrates an example of an architectural terra cotta lintel, soffit, and accessory units around window openings. The units are anchored to a transitional wall system, consisting of a multi-wythe masonry backup wall with structural steel support. The architectural terra cotta is hand-pressed and attached with steel anchorage. Though the details in Terra Cotta Standard Construction were intended to illustrate general best practices of terra cotta construction, specific project construction and conditions vary.