Is the front windshield film applied on the inside or outside?

[NatalieAnn]

The front windshield film is applied on the inside because it won't be exposed to wind and rain, thus aging more slowly and extending its service life. Additionally, during use, the film won't be subject to significant external interference, won't get scratched or damaged, and the adhesion will be more secure without issues like peeling corners. The functions of automotive window film: 1. Heat insulation and sun protection - the film can effectively block a large amount of heat generated by infrared rays; 2. UV protection - applying heat-insulating film can block most ultraviolet rays, preventing skin damage and reducing the aging of car interiors; 3. Safety and explosion-proof - the base layer of the film is made of polyester, which has excellent tear resistance and puncture-proof capabilities. Combined with the adhesive layer of the film, the strengthened glass after application can prevent injuries to drivers and passengers caused by accidental glass breakage.

[DelRiley]

I found that when applying a front windshield film, it must be applied on the inside, not the outside. Last time I went to a professional shop for installation, the technician explained that applying it on the outside would cause repeated friction from the wipers, making it prone to scratches or adhesive failure, especially during rain or snow. Applying it on the inside is more stable, with stronger adhesive bonding, and it effectively blocks sunlight, reduces heat, and minimizes glare for safer driving. I chose a film with high light transmittance, which doesn’t obstruct visibility, and I clean the inside gently with a soft cloth. The benefits include a drop of over ten degrees in cabin temperature during summer and no skin sunburn. However, when selecting a film, be mindful of legal standards—films that are too dark are not allowed. It’s recommended to have it installed at a professional shop rather than attempting a DIY job.

[DiRebecca]

I emphasize that the windshield film must be applied to the inside. If applied to the outside, wind and rain can easily damage the film, and the reflection can severely obstruct visibility. Applying the film on the inside better protects the glass, prevents UV damage that ages the interior, and also enhances privacy. When choosing a film, I focus on quality—higher light transmission ensures safer night driving. After installation, the adhesive takes a few days to cure, so don’t rush to open the windows. Remember to regularly clean the inner surface of the film to avoid scratches and maintain clarity.

[SanJosie]

Windshield film can only be applied to the interior. I once heard someone suggest applying it to the wrong side, and the film ended up being torn by the wipers. Applying it on the inside ensures durability and provides excellent sun protection, reducing the scorching heat. Cleaning the glass thoroughly during installation is crucial; if the adhesive is applied firmly, it can last for years without needing replacement. Choose a film with a light transmittance that complies with regulations to ensure it doesn't affect driving visibility and safety.