This is a very common question that we get from our customers and the answer is not all that straight forward. It all boils down to what kind of composite material is used in the car cover fabric. There are two or more layers of composite that are ultrasonically bonded in a fairly good quality indoor car cover. However, whether or not only two layers of composites will provide the best protection depends on the indoor climate of your garage and the quality of the composite used in the fabric. If you have a fairly climate-controlled environment without humidity and danger of mold – the basic outdoor car cover will work. But do keep in mind that outdoor and indoor car covers are engineered differently and their composite fabric is very different. While the outdoor car cover is more rugged and works great against outdoor elements, they are not designed for long-term, indoor storage in mind. As a result, most outdoor car covers that have less than four layers will not perform as good as a two-layer indoor car cover when your vehicle is stored indoors.

Design Principle
Indoor car covers are designed to protect your vehicle from residual dust, natural humidity buildup in a confined place, protection against insects and small animals (rodents and critters) and more. On the other hand, outdoor car covers provide robust protection against more intense outdoors environment where your vehicle in more prone to face harsh elements, including but not limited to: extreme temperature, rain, mud, slush, ice, snow, sun light/UV ray, debris of all sorts and more. While the composites in each layer are made out of different protection in mind, you usually cannot tell which layer consists of what protective layer as companies keep that information proprietary. Ideally, you need all five layers of protective shield that can protect your vehicle both indoors and outdoors and can provide year round protection.

Bonding of Layers
Even with several layers, it’s not easy to get the optimal protection for year-round, for both indoors and outdoors for your vehicle. Cheap car cover fabrics are often manufactured by simply gluing multiple layers of mediocre composites. More alarmingly, some counterfeit car covers are made out of non-composite materials that have no protective properties whatsoever. While the resulted car cover will be hard to distinguish from a quality all-weather car cover, the level of protection will be day-night difference. The most seamless bonding of layer happens from ultrasonic bonding any other method will be prone to peeling and poor protection. In fact, poorly constructed, glued car cover can melt in heat excess of 120 F and can permanently damage the exterior of a car if indoor temperature tends to rise that high (think metallic car port/shed).

ultrasonic bonding
image by Textileweb.com

Engineering Matters
The protection level also depends on what kind of engineering goes in the making of a car cover. A breathable car cover will do great both indoors and outdoors and the best breathable composite layer is the micro-porus film that is highly coveted in the world of car covers. You also want the inner most layer to be soft and easy on the finish and paint of your ride. Not all car covers are made equal and some car covers that are engineered for solely outdoors will do more harm than good on vehicles that are stored indoors. Do your research, don’t hesitate to ask question and make sure your car cover can be used indoors if you’re in doubt. Most car cover store has dedicated care line, talk with an expert before making a purchasing decision. Also make sure the car cover you’re purchasing has generous warranty and return policy should you find out you need to return for any reason.

With so many technicalities and variables it’s not easy to engineer a car cover that will be equally effective indoors and outdoors. Being said that, it’s not unheard of in car covers, especially in the likes of Gold Shield 5L car covers from CarCover.com to provide top-notch protection both indoors and outdoors in virtually all sort of weather. CarCover.com is proud to design, engineer and manufacture the best-in-class, all-weather, indoor and outdoor car cover right here in the United States. While our Bronze Shield 2L car covers are engineered for indoor use only; our Silver Shield 3L car cover is perfect for both indoors and outdoors usage as long as the outdoor weather is not extreme. In case you live in a place where weather extremity is a concern, you might want to try our top of the tier – Gold Shield 5L car cover. Our car covers are tailored to fit any vehicle you can think of: oldest classic to latest Bugatti and anything in between. All our car covers are backed by our exclusive 30-day, no question asked money back guarantee should you not be 100% satisfied. We also provide a lifetime unlimited warranty on all of our car covers. Give us a try and experience the CarCover.com difference yourself.