Johnson Window Films Dealer Resource Center

JWF, Roll-Up Tips

Roll-Up Tips

Side windows that drop when you open the door are challenging.

Dropping Side-Door Windows
More and more cars today are equipped with side door windows that will drop down 1" inch whenever the door is opened. When the door is closed, the window automatically "seals" tight to the door. This is to help reduce the amount of excess noise from outside of the car. When you are installing film, you want to make sure the window is in the upright position. Here are a couple of ways to prevent the side window from dropping during installation:

• Some cars will have a spring-loaded button to activate the window when the car door
is open or closed. When the door is closed the button pushes in, forcing the window to seal around the door. You can take a small piece of your squeegee and force it into the opening where the button is located. This will trick the button into believing the door is closed and prevent the window from dropping.

• On other cars you will have to trick the locking mechanism. To do this, you will need a screwdriver (or a bone tool). Slide the screwdriver into the locking mechanism and adjust it to the locked position so the window remains sealed while the door is open. Sometimes you may have to press the lock twice to get it to lock. Be careful not to close the door until you have re-opened the locking mechanism, it may damage the mechanism.

Locking mechanism

• After you've installed the film, remember to let the side window sit for 20-30 minutes before releasing the locked mechanism. You want the film to dry first to prevent the film from fraying. To speed up the process, you can spot dry using your heat gun.

Cut Patterns Using A Grease Pencil
Sometimes, it can be a little intimidating working on a very expensive car especially when it involves cutting the rubber gasket on a side door window. If you prefer not to cut the gasket, we recommend using a greasepencil to outline your film pattern. Here are the simple step-by-step instructions:

A grease pencil
Yellow grease pencil
Mark the sides and bottom before trimming the top.
Step 4 – outline film with grease pencil
Finish the pattern on the trimming glass.
Step 7 – align sides with ruler
Clean and prep window.
Place film pattern onto side door window covering window by 2"-3" all around. Make sure liner is facing you.
Spray center of pattern with solution and squeegee film two to three strokes to anchor film to the glass.
Using a grease pencil, trace an outline on the film pattern. Start with both sides of the window,and then trace along the bottom of the gasket.
Roll down side door window 2 to 3 inches and, with your Olfa knife, cut along top of window from one end to the other in one continuous motion (this is the only cut that you'll make on the door).
Take film pattern to clean trimming glass.
Align the three outlined sides with a metal ruler and begin cutting the film just outside the marked area. You want a little extra film to help prevent any lightgaps when rolling down the window.
Round off any bad edges on the corners.

Your film pattern is now ready for installation.

Double Cutting
Double cutting can save you time and help speed up your side door window installation. All you need to do is cut two film patterns on one window the extra pattern will be used on the opposite side door window.

Although this technique works most of the time, don't be surprised on rare occasions the second film pattern doesn't fit on the opposite window. Pay close attention during your vehicle inspection to see how much room there is on the interior of the window. This will not only prevent light gaps, it will ensure the opposite side pattern will fit without any complications. Most cars have room for the film to go past the gasket by 1/4" or more. Here are the steps for double cutting:

Lay the second piece over with the liner down.
Step 2 – make two patterns
Leave an excess of 2" to 3" around the film.
Step 2 – cover entire window
Prep and clean window (if the gasket is made of felt, make sure to mask off using tape).
Make two film patterns; making sure to cover entire window with excess of 2" to 3" all around.
Place first film pattern on side door window and make sure liner is facing you. Center the pattern on the window.
You can either cut the film on the side door window or trace your cutting area with a grease pencil. If you plan to cut the film on the window, remember to cut the film just below the gasket (1"-2") to prevent any light gaps. If you are outlining the film pattern, mark the film at the bottom of the gasket and follow the Cut Patterns Using A Grease Pencil steps.

Repeat the above procedure on your second film pattern.

Electrical Concerns
Since more and more cars are equipped with electrical sensors (power windows, GPS systems, speakers, amplifiers, etc...) in both the side door panels and rear decks, you need to pay close attention where the water goes during the film installation process.

Almost all cars have drain holds on the bottom of the door for water to escape. However, you still need to be careful not to "over wet" the side door window because it can damage the electrical sensor in the door. That could prevent the window from rolling up and down, or even worse, it could ruin the sensor permanently.

Pay special attention to some of the rear decks on the higher end vehicles such as the BMW 745i series. The computer is located in the trunk of the car on the passenger side. It has cable that runs under the rear deck and water can flow down into the computer causing major damage (up to $1,300 in some cases).

The best thing to do is pay close attention during vehicle inspection to make sure there are no surprises. Take special care to mask off exposed wires and any other electronic components. Check with car dealerships to see if they will provide you with diagrams of the vehicle. Or contact Johnson Window Films technical support to answer any questions you might have.

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