What is the most common mistake in adhesive selection?
en
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.
What does the safe drive-away time (SDAT) refer to?
en
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.
What is the most common safety standard to measure windscreen adhesive performance.
en
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).
What is the best way to prepare the new windscreen before applying the new adhesive?
en
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.
Are thinners or brake cleaners suitable for cleaning and pre-treatment?
en
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).
What is the best substrate basis on the body flange for the new windscreen?
en
The best basis is always the cut back old bead - provided it is also a polyurethane adhesive.
Do I have to clean the trimmed bead before applying the primer?
en
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.
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