Windscreen Adhesives for the Automotive Repair Market

The most common mistake made when replacing a windscreen is choosing the wrong type of adhesive. The best choice is clearly polyurethane – as it offers both high structural strength and great workability, making it safe and clean to apply.

It indicates the minimum waiting time after a windscreen replacement - i.e. the time after which the customer can safely drive away. Be sure that you know the exact safe drive-away time of every windscreen adhesive you use.

There is currently only one international industry standard for the automotive aftermarket/vehicle repair market called FMVSS 212/208, which tests windscreen retention in the event of a frontal impact at 48 km/h with a strapped-on dummy "HIII Middle Adult Male" (1.75cm, 78 kg = average male driver).

First entirely clean all dirt and grime from the new windscreen using a glass cleaner such as our TEROSON BOND Glass Cleaner, which is  water-based and allows an easy, thorough and solvent-free cleaning. Afterwards abrade the bondline, to roughen the surface for best adhesion. Then apply Glass Cleaner again and dry off the bondline in one direction using a lint-free cloth. Now, you are ready for the next steps.

No, they are not. They may reduce the adhesion strength and are thus unsuitable for substrate pre-treatment. You should always use cleaners and pre-treatments that work with the adhesive system you use. For our TEROSON BOND line you may use either TEROSON BOND Glass Cleaner (water-based) or TEROSON VR 10 (solvent-based). 

The best basis is always the cut back old bead - provided it is also a polyurethane adhesive.

If the bead was trimmed more than 2 hours ago, it must be cleaned with TEROSON VR10. Afterwards the solvent has to evaporate for at least 10 minutes before applying the primer, e.g. TEROSON BOND All-in-One Primer.
Caution: This only applies if the old bead is made of glass-compatible polyurethane and sits firmly on the substrate. Otherwise, all traces of adhesive have to be removed and a new adhesive bead has to be applied.