A lot of car enthusiasts like to have window tint applied to their windows as an aftermarket addition. A typical issue that many have is bubbling as air gets trapped under the film when it’s applied. It seems impossible to remove them unless you remove the tint itself and start from scratch, hoping to get a better application. However, with a few simple items and some time, you can remove the pockets of air trapped in your car window tint without starting over.
Step 1 – Pick a Sunny Day
In order to be able to work on the car window tint easily and without potentially damaging it, it is important to make the adhesive pliable. Pick a day when there will be a lot of sun with temperatures in at least the mid 70s Fahrenheit. Move your car to an area that gets a lot of sun and let it sit outside for at least two hours. This will allow the adhesive to weaken enough so that you can play around with it. You could use a hair dryer if you cannot find a suitable location or enough sun.
Step 2 – Loosen the Adhesive
A car drenched in sun helps to make the tint film easier to move and replace without losing the sticking quality of the adhesive. However, you will still need the adhesive to weaken its grip a little more. To do this, you want to moisten the car window tint using the fine mist setting on a spray bottle. You do not want to soak the window tint. The cold from the water will interact with the heat from the sun to make the adhesive on the car window tint very malleable.
Step 3 – Attacking the Air Bubbles
Using the safety pin; go to each air bubble and pop it. Make a hole that is very small and do not tear the car window tint. A quick poke through the film at a very straight line will do the trick. Sometimes you will have clusters of air bubbles. In these circumstances you want to pop each bubble. It is possible that the car window tint will dry prior to you finishing, so if this is the case, just moisten the tint again and continue.
Step 4 – Removing the Air Bubbles
The tiny holes serve as a way for the air that is trapped to escape. Because they are so small, when you remove the pockets of air, the car window tint will effectively close these holes. You want to smooth the car window tint out in order to push the air from it. Slide a stiff piece of plastic held at a 45-degree angle over the bubbles with medium pressure and long, smooth, slow strokes. Too much pressure could tear the car window tint so be careful. Moisten the tint as needed but remember to not drench it.
Source- http://www.doityourself.com/stry/removecardents