How do you temporarily seal a broken car window?

Having a broken or cracked car window can be a major inconvenience. Not only does it let in outside weather and noise, it can also be a security risk. While replacing the window is the best long-term solution, it often takes time to get an appointment with an auto glass repair shop. In the meantime, you’ll want to temporarily seal the window to keep the elements out and prevent further damage.

What causes car windows to break?

There are several common causes of broken car windows:

• Rocks or road debris hitting the glass at high speeds
• Accidents that crack or shatter the window
• Vandalism and break-ins that intentionally damage the glass
• Extreme hot or cold temperatures causing the glass to contract or expand
• Defects and flaws in the glass that lead to cracking
• Stress fatigue over time from opening and closing the windows

Side and rear windows are most vulnerable to breaks since they are more exposed. Windshields are designed with thicker, layered glass to better withstand impacts.

Should you drive with a broken window?

It’s not recommended to drive long distances with a broken or cracked window, for several reasons:

• It allows in cold air, rain, snow, and wind noise making driving uncomfortable.
• The wind force can cause existing cracks to spread further.
• Broken glass edges are a hazard and might injure passengers.
• It leaves your belongings and vehicle vulnerable to theft.
• Further road debris could more easily shatter the damaged glass.

However, for short trips to an auto repair shop, driving with a damaged window can be manageable if properly sealed. Just take extra precautions.

What materials can be used for a temporary fix?

Here are some common DIY options for temporarily sealing a broken car window:

• Plastic sheeting or drop cloths – Cut plastic to overlap the broken glass and tape it securely around the edges. This creates a waterproof barrier.
• Garbage bags – Multiple layers of garbage bags taped up can serve as an emergency patch.
• Duct tape – Running duct tape across cracks and holes seals out air and moisture.
• Clear packing tape – Layering clear packing tape over damage can help stop spreading.
• Bubble wrap – Provides extra padding and insulation when taped over broken window areas.
• Plexiglass sheet – A plexiglass panel cut to size can create a temporary window replacement.

The key is to completely cover and seal off the damaged area using these materials. Be sure to tape down all edges securely.

How can you fix plastic windows?

For cars with plastic windows instead of glass, many of the same temporary repair techniques apply:

• Use heavy duty packing tape to seal cracks and holes.
• Cut sections of plexiglass to butt up against and cover damage.
• Use caulk or silicone sealant around the plexiglass edges.
• Drill tiny holes and zip tie a plastic panel over damaged areas.
• Carefully bend and snap a plastic panel back into place if dislodged from the tracks.

Avoid using methods that require heat like heat welding. Plastic can easily melt, warp and sag if exposed to high temperatures.

What about fixing a sunroof?

For broken sunroofs, preventing water leaks is the priority. Some temporary fixes include:

• Sealing the edges with duct tape, caulk or silicone.
• Placing a piece of plywood or plexiglass over the hole, taped down tightly on all sides.
• Covering the sunroof with plastic sheeting, a tarp or heavy garbage bags.
• Padding the sunroof opening with foam or rubber strips to absorb water.
• Parking under cover to limit exposure.

Avoid leaving the sunroof open as exposure to the elements will just cause more damage.

What precautions should you take?

When driving with a temporarily sealed window, be sure to take these added safety precautions:

• Drive slowly and avoid highways or fast speeds.
• Have passengers wear seatbelts at all times.
• Roll down side windows to improve ventilation and visibility.
• Turn your lights on so other cars can see you.
• Adjust side mirrors for better blind spot viewing.
• Remove loose glass carefully to avoid cuts.
• Park in safe areas away from vandalism or falling debris.
• Cover personal belongings to prevent theft.
• Turn on alarm system or use an external steering wheel lock.

Stay alert for any worsening of the damage while in transit. Pull over immediately if the temporary fix fails.

What are some long term solutions?

While a quick DIY seal can get you through temporary use of the vehicle, extensive damage will require proper professional repair for a permanent fix, including:

• Glass replacement – The best solution for badly cracked or shattered windows is to install new OEM glass.
• Windshield repair – Minor chips, cracks and pits can often be filled and bonded.
• Window regulator or motor repair – If the window will not raise or lower properly, the mechanism may need replacement.
• Weatherstrip and seal replacement – Renewing worn seals prevents air and water leaks.
• Body work – Extended cracks or collision damage may require body panel repairs or replacements.

Consult a professional auto glass technician to determine the right permanent solution for your particular damage.

Window Glass Replacement Costs

Replacing a broken car window pane can vary in cost depending on these factors:

Window Type	Average Replacement Cost
Windshield	$200 – $400
Side window	$120 – $350
Rear windshield	$200 – $550
Sunroof	$600 – $1500

Other cost factors:

• Vehicle make, model and year
• Labor time and technician rates
• Custom or specialty glass types
• Additional repairs needed
• Where you live and insurance deductibles

While an expensive repair, a properly replaced factory glass window will restore safety and optimize your vehicle’s look and value.

Top tips for preventing window breaks

It’s much easier to avoid broken windows than have to repair them. Here are some useful prevention tips:

1. Regularly inspect glass for chips and early cracks.
2. Address small damage right away before it spreads.
3. Avoid hitting curbs or debris on the road.
4. Clean glass inside and out to maximize visibility.
5. Replace wiper blades when worn or damaged.
6. Make sure your windshield washer fluid is topped up.
7. Have proper windshield tinting installed to help strengthen the glass.
8. Park in garages or covered areas when possible.
9. Get comprehensive auto insurance with glass coverage.
10. Install protective guards or screens over side windows.

Practicing these tips will help keep your car windows in the best shape possible.

Conclusion

Driving a car with a damaged window can be a difficult situation. While replacing the window is the ultimate solution, it’s not always immediately possible. Using plastic sheeting, garbage bags, tape, and other DIY materials allows you to temporarily seal the window to keep out the elements until a permanent repair can be made. Just be sure to take extra safety precautions when driving with a temporary fix. With some creative thinking and handy supplies, you can seal up that broken window in a pinch.