3 Hardening of adhesive: Notes
WARNING: This page is about a different car, the 2013 BMW 550i GT, 2012 BMW 550i GT, 2011 BMW 550i GT, and 2010 BMW 550i GT. However, it is still accessible from the selected car via links, so may be relevant.
The adhesive hardens by reacting with air humidity at room temperature.
IMPORTANT:
Once the adhesive bead has been applied, the window glass must be installed within 7 minutes (depending on air humidity, temperature).
After 7 minutes the adhesive bead forms a skin which can no longer guarantee a perfect bond.
After 7 minutes the adhesive bead forms a skin which can no longer guarantee a perfect bond.
At ambient temperatures above 23 °C and 50 % relative air humidity (hot countries), the adhesive open time is shortened to approx. 5 minutes (skin formation time).
A relative humidity of < 30% significantly slows hardening.
The adhesive hardening process is interrupted completely at ambient temperatures below 5 °C. In this event, there will be no increase in the strength of the bonded connection.