Blog Post

Detailing for Dummies: Streak Free Windows!

Nick Book • May 15, 2019

Cleaning windows is a breeze with Opti-Coat No Rinse!

Cleaning windows is every detailer’s FAVORITE part of the cleaning process. If you are like me, you have tried every cleaning solution, towel and squeegee on the market and still run into issues with streaking. Well I found the solution to the problem and I wanted to share it with the world! If you follow this method for cleaning your vehicle’s windows, there should be no more streaks or headaches!


Dirty window on MINI Cooper

How to Clean Windows Using The “Box” Method

Supply List:


  • 1 Gallon Opti-Coat No Rinse* Cleaning Solution
  • Standard Dilution 256:1
  • A bucket of the solution is preferred but you can mix it in a spray bottle if needed
  • 1x Diamond Weave Towel
  • 1x Waffle Weave Towel

The Process!

Step 1: Start on the inside of the driver door window

Saturate the diamond weave towel with the Opti-Coat No Rinse and ring out so it is damp.

Using this towel go around the exterior of the glass as shown in diagram “A”

How to clean windows step 1

Step 2:

“Fill in” the box you made in step one with the diamond weave towel by wiping the window in an up and down motion as in diagram “B”

Step 3:

Using the waffle weave towel, repeat the motions of Step 1 & 2 to dry the window and finish the cleaning process.

Step 4:

Repeat steps 1-3 for the opposite side of the glass that is still dirty.

PRO TIP: When cleaning windows, use a vertical wiping pattern on the inside and a horizonal pattern on the outside. If there are any streaks; their direction will indicate if they are on the inside or the outside of the window!

Finally, repeat steps 1-4 until all glass is clean and streak free!

How to clean windows step 2
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