What is the best material for an exterior seal in a pressure-glazed system?

In a pressure-glazed system, the best material for an exterior seal is glazing tape. This is primarily because glazing tape provides a reliable bond and an effective barrier against moisture and air infiltration, which is crucial for maintaining the integrity of the glazing system. The tape is specifically designed to accommodate the pressures involved in a glazing system, helping to manage movement and thermal expansion without compromising the seal.

Glazing tape is also preferred due to its ease of installation, allowing for a consistent, even application that can enhance the overall performance of the system. It’s made to resist UV degradation and weather-related wear, which makes it suitable for exterior applications where it will be exposed to varying outdoor conditions.

Other materials, while they may serve certain functions, do not provide the same combination of properties that glazing tape does for exterior pressure seal applications. Sealants and silicone can be appropriate in other contexts, but for the unique requirements of a pressure-glazed system and the specific need for a reliable exterior seal, glazing tape is the optimal choice.