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  2. Car Maintenance Guide
  3. Car Wash Guide - Car Wash Q&A
  4. Q8 What to do when rain repellent residue is difficult to remove?

Q8What to do when rain repellent residue is difficult to remove?

Difficulty arises when the coating is left too long to dry. The residue becomes tough and "baked on" to the glass!

Generally, rain repellents should be wiped off after drying for about 10 minutes. Leaving them for too long can cause unevenness or even a tough residue.

Difficulty arises when the coating is left too long to dry.
One hour in direct sunlight leads to this!

A tough residue that cannot be removed.

One hour in direct sunlight leads to this!

Not to worry!

The solution is surprisingly simple - just reapply.

The solvent in the rain repellent solution will dissolve and remove the residue.

Glaco Roll OnGlaco Roll On

Wipe off promptly!

When the liquid has hazed over, wipe off immediately.

Wipe off promptly!

Finished!

Beware of applying in high temperatures or direct sunlight, because it may dry too quickly.

Finished!

Tips

In extreme cases, use a glass compound.

In the case of fluoropolymer (Fusso) based rain repellent, such as Ultra Glaco, just the solvent may not be enough to remove the residue. In this case, use a glass compound to remove it.

Glass Compound Z