In a curtain wall starter sill section as such, what role do these tiny gaskets play in terms of functionality and performance?

Modern curtain wall technology relies on gasketed joinery to do the bulk of the work.

And they play more of a role in performance than you think..

- It can be for proper air sealing..

- Water drainage..

- Minimizing thermal bridging..

- Creating an acoustic barrier..

But you have to ask yourself the following -

How effective can a component as such be if it is not easily accessible for inspection (quality control / assurance) or maintenance (replacement)?