Can You Waterproof Any Electronic Device? PCBs, Computer Boards, LED Lamps & More

“Can I waterproof this?” is the most common question we get — about a PCB, a computer board, an LED lamp, a sensor, or some other gadget that runs on electricity. The short answer is almost always yes. Here is what can be coated, how, and the one rule that matters.

The short answer: yes — almost anything electronic

If a device runs on low-voltage or mains electricity and you want to protect it from water, humidity, condensation, salt or washing, a plastic-based protective coating can almost always help. MGCoat Liquid PCB Plastic Coating forms a waterproof, electrically-insulating, mechanically-reinforced layer at room temperature — no oven, no heat. Even a thin 100 µm film is fully waterproof.

PCBs and circuit boards

This is the core use case. Cleaned and dried boards are coated by dipping (full coverage), spraying (even layers) or brushing (local reinforcement of edges, cable entries and repair zones). The cured layer resists water, humidity and common workshop chemicals, and can be engineered for continuous immersion to 100 m and beyond when the whole assembly is sealed.

Computer, controller and logic boards

Controller boards, logic boards and computer-type assemblies are protected the same way. Because the coating is non-conductive, it also guards against shorts from dust and condensation. It stays removable with a dedicated solvent, so a board can be reworked at one point and re-coated — protection without losing serviceability.

LED lamps, strips and lighting

LED lamps, strips, modules, drivers and outdoor signage are ideal candidates — they live outdoors, in damp places and get washed. A thin even layer adds almost no weight and keeps water and humidity out. For colour-critical optics, coat the driver and board and mask the lens area.

Sensors and other electrical devices

Sensors, instrumentation, power supplies, chargers and many other low-voltage or mains devices can be coated too. The single rule: mask everything that must stay functional or serviceable first — connectors, switches, moving contacts, heat-dissipation surfaces, calibration points and antenna elements. And remember: waterproofing protects against water, but it does not replace proper electrical-safety design.

How much you need and what it costs

Coverage follows a simple rule: about 1000 ÷ film thickness in microns m² per litre — roughly 7–8.5 m² per litre at the standard 100 µm. Pricing is provided through an official quotation; tax and shipping vary by destination. Send your board or device size on WhatsApp and we'll calculate the litres and a quote.

Liquid PCB Plastic Coating by MGCoat is a heat-free, plastic-based nano coating built to waterproof PCBs, computer and controller boards, LED lamps, sensors and electronic devices in general — a strong, removable, immersion-capable layer applied at room temperature.

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