How to Protect a Car from Frost and Snow | Blog | Tarpaflex

19th Sep 2025

How to Protect Your Car from Frost and Snow With Tarpaulin

Waking up on a frosty morning to find your car windows frozen over is one of the season’s most frustrating chores. Not only does it cost you time scraping the glass, but repeated frost and snow exposure can also do damage to paintwork and seals over time, but how do you protect your car from frost and snow without relying on chemical sprays or de-icing? The answer is surprisingly simple - Tarpaulin.

At Tarpaflex, we supply a wide range of tarpaulins that make excellent car covers during the winter months. Here’s everything you need to know about using them safely and effectively.

Why Use a Tarpaulin for Car Protection?

Tarpaulins are durable, waterproof, and easy to handle, making them ideal for shielding your car from the worst of the winter weather. By covering your car overnight, you can:

  • Prevent frost from forming on the windshield and windows.

  • Stop snow building up on the roof, bonnet, and windscreen wipers.

  • Protect paintwork and rubber seals from long-term damage caused by freezing conditions.

  • Save time in the morning by avoiding endless scraping or running the engine.

If you’re wondering how to stop frost on car windows in the simplest way possible, a tarpaulin cover is one of the most reliable solutions.

Is it OK to cover a Car With Tarp?

Provided you use the right kind of tarpaulin, a breathable or lightweight tarpaulin can prevent condensation build-up underneath while still protecting against frost and snow. Heavy duty waterproof tarpaulins are also perfect for outdoor car protection, as these options are UV stabilised, waterproof, and designed to handle the harshest weather conditions.

How to Prevent Frost on Your Windshield

The key is to cover the glass before frost has a chance to settle. Simply drape a tarpaulin over your car in the evening, making sure it fully covers the front windscreen and side windows. Secure the tarp using bungee cords or clips to keep it in place overnight, even in windy conditions.

When you remove the tarp in the morning, your windshield will be clear and ready to go - no scraping required.

Is Tarpaulin Good for a Car Cover Year-Round?

While tarpaulin is particularly useful in winter, many drivers use it all year to protect their cars from rain, bird droppings, tree sap, and UV rays. It’s a versatile and cost-effective alternative to expensive fitted car covers.

For long-term storage, breathable covers or ventilated tarpaulins are recommended to avoid trapped moisture.

How Big of a Tarp Do I Need to Cover a Car?

Choosing the right size tarpaulin is essential if you want to keep your car properly protected through the winter. A tarp that’s too small will leave parts of the vehicle exposed to frost, while one that’s excessively large can be difficult to handle and secure, making it more likely to flap in the wind. The goal is to find a cover that drapes neatly over the car without leaving lots of loose material.

As a general guide:

  • Small cars (hatchbacks, compact city cars): a 10ft x 12ft tarp usually provides enough coverage for the roof, bonnet, and windows.

  • Family cars or SUVs: aim for a 12ft x 16ft tarp or larger to ensure the sides and bumpers are fully protected.

  • Vans, pickups, and 4x4s: these taller, longer vehicles often require 15ft x 20ft heavy-duty tarps to cover the full bodywork securely.

These sizes aren’t set in stone, your choice may depend on whether you want to cover just the top and windows to prevent frost on the glass, or whether you’d prefer complete coverage from roof to tyres.

At Tarpaflex, we supply tarpaulins in a wide range of sizes and thicknesses, so you can select the perfect fit for your vehicle. A snug, well-fitted tarp not only offers better protection but also makes the whole process of covering and uncovering your car much easier.

You can also view our handy size guide for a better idea of the right fit for your car.

Tips for Using a Tarpaulin to Protect Your Car

Simply throwing a tarp over your vehicle won’t give you the best results - it’s important to use it correctly to ensure your car is fully shielded and to avoid creating problems such as condensation or scratches. Start by securing the tarp tightly around the car. A loose cover will flap in the wind, which can not only leave areas exposed but also risk rubbing against the paintwork. Using bungee cords, rope, or purpose-made fixings makes it easier to keep everything in place, even during stormy weather.

If you’re planning to store your car outdoors for weeks at a time, it’s worth choosing a UV-stabilised tarpaulin. These tarps don’t just protect against frost and snow -they also block harmful sunlight that can fade paint and cause seals to crack. Another important step is to avoid covering a wet or dirty vehicle. Trapping moisture and grit beneath the tarp can encourage rust spots or leave scratches on the paint, so a quick rinse and dry before covering will go a long way towards keeping your car in good condition.

Finally, for areas that are prone to high winds or heavy snow, a tarp with reinforced corners and edges provides added durability. This makes it easier to secure the tarp firmly without tearing, and ensures it lasts through multiple winters. By following these simple steps, your tarpaulin will not only keep frost off your windows but also extend the lifespan of your car’s exterior.

Find the perfect tarp covering for your car today.