Which approach emphasizes the repair of historic materials but allows more flexibility for replacements?

The approach that emphasizes the repair of historic materials while allowing for more flexibility in replacements is rehabilitation. Rehabilitation recognizes that while it is essential to maintain significant historical features, it also acknowledges the need for alterations and updates to accommodate contemporary uses or to address structural deficiencies.

This approach balances the integrity of the original materials with the practicalities of modern functionality. It allows for the repair and retention of as many historic materials as possible, while also permitting the replacement of materials that are too damaged to be preserved, thus providing the necessary flexibility to adapt the building to its current needs.

In contrast, preservation focuses on maintaining and protecting the existing materials and features without altering or replacing them. Restoration aims to return a property to a specific period in its history, often minimizing later alterations and avoiding replacements. Reconstruction involves recreating a historic structure or components from the ground up, often with new materials, which does not align with the flexibility that rehabilitation offers.