Is a Door Waterproof Membrane Absolutely Necessary?
2 Answers
Door waterproof membranes are not absolutely necessary, and the decision to purchase and use them can be based on actual conditions. The functions of a door waterproof membrane: It can block external moisture, preventing rainwater or water vapor from entering the vehicle interior. Waterproof breathable membrane: It is a new type of polymer waterproof material. In terms of manufacturing process, the technical requirements for waterproof breathable membranes are much higher than those for ordinary waterproof materials. At the same time, in terms of quality, waterproof breathable membranes also possess functional characteristics that other waterproof materials lack. After multiple layers of anti-reflective coating are applied to the lens surface, the lens becomes particularly prone to stains, which can damage the anti-reflective effect of the coating.
I think this is a very practical issue – the door waterproof membrane really shouldn't be skipped. As a car enthusiast, I've noticed many people overlook it, but it's absolutely essential. Just imagine, inside the door there are components like wiring, speakers, and window mechanisms. If rainwater seeps in through glass gaps, it can easily cause rust or short circuits. I've seen cases where owners didn't properly install the waterproof membrane, and within just a few months they experienced door lock failures or speaker malfunctions – the repair costs were much higher than the price of the membrane. In areas with heavy rainfall, like southern cities, this little thing can save a lot of trouble. Of course, it's also important to regularly check if the membrane is damaged or aged. Keeping the door interior dry is key to extending its service life. In short, from a practical standpoint, I strongly recommend installing it – don't invite big troubles just to save small money.
