What is the status of modifications to existing finish systems?

The status of modifications to existing finish systems is nuanced, and when determining what is permissible, it's important to understand that in many contexts, existing finishes might be protected or prescribed based on project specifications, building codes, or material safety standards. Certain modifications may disrupt the original intent or performance characteristics of the finish systems, leading to potential liability or structural concerns.

However, in practice, modifications are often allowed under specific conditions, which can accommodate the need for improvements in aesthetics or durability while still adhering to regulations and best practices. Hence, the option that reflects the flexibility in managing existing finish systems while ensuring compliance with relevant guidelines is often seen as "Allowed under certain conditions." This option recognizes that, while there may be restrictions, scenarios exist where modifications can be made thoughtfully to enhance the system without compromising its integrity or safety.