Silicone would not have helped me, the factory urethane seal was not thick enough, or conversely when the screen was fitted, it was not pressed home totally correctly on one side at the top and did not create a seal, generated noise when moving in the car, and one could move the screen by hand!!! So the screen was cut out, the bead replaced and hey presto, No movement, no noise and very happy. (I specified to the dealership that the car should not be driven for 4 hours to allow the screen to bond totally, 4 hours is the recommended wait time for a front windscreen to be driven in my trade as it let's the bond develop so it resists movement and also allows the air bags to function as designed in the case of an accident, otherwise the air bags deploying won't shape towards the occupants.) the windscreen is a very important component in the vehicle.