User:
Mezzanine ceiling closure
Storyboard 
The problem with sealing between the roof and the mezzanine is that there is no proper contact surface since both are at a 29-degree angle. Therefore, it is necessary to use an intermediate piece that has surfaces matching both angles. This intermediate piece will allow for proper adhesion and sealing with expanding foam.
ID:(139, 0)
Spaces between ceiling and mezzanine
Description
With the help of light, it can be observed that there are gaps between the ceiling and the mezzanine:
and
A horizontal beam at the edge of the mezzanine helps reduce the gap somewhat, however, the main problem is that:
There is no proper contact surface between the ceiling and the mezzanine due to the inclination. Therefore, simply using expanding foam won't solve the problem.
It is necessary:
An element that creates a contact surface between the ceiling and the mezzanine, or an edge beam, that allows for the effective application of expanding foam.
ID:(879, 0)