00:00Ever splashed coffee on a PCB and watched it die?
00:03I did, and that's what sent me down the conformal coating rabbit hole.
00:08I pulled the best deals on the stuff that protects a whole board, and honestly?
00:12Against heat shrink, coating wins on nearly everything.
00:16Let's compare.
00:18First one up, a waterproof silicone conformal coating lacquer 8 bucks and change, 4.8 stars,
00:24and almost 4,800 sold, so you're not the guinea pig.
00:28The silicone base is the real feature here.
00:31It's anti-corrosion, not just water-repellent, so traces and components stay protected from
00:36humidity and dust over time, and the brush is included, which is what you actually want
00:41for reaching between parts.
00:43Next, this clear fast-drying conformal coating varnish for $7 and change, sitting at a perfect
00:485 stars from over 4,400 buyers.
00:52Fast-drying matters more than people think, coat a board at night and if it's still tacky
00:56in the morning you'll smear the whole thing.
00:58This set's quick, and it's clear, so your silk screen and solder joints stay visible.
01:047 bucks, hard to argue with it.
01:07Now the Zorolink 60ml conformal coating, right around $8, 4.9 stars, 4,259 sold.
01:15This is a proper moisture-proof job for electronics, brush included, and 60ml is a generous size
01:21for one board with plenty left over.
01:24Brand new boards and moisture is the enemy.
01:27This handles it, and it handles it without hiding your components from view.
01:32Then you've got the 100ml waterproof insulation sealant, also just over $8, 4.9 stars, 4,101
01:39sold.
01:41This is the biggest bottle in the whole lineup, and that's the whole pitch, same money, nearly
01:45double the volume.
01:47If you fix more than one board, or you like coating a whole enclosure at once, this is
01:52the best price per milliliter on the list by a mile.
01:55Last, and cheapest of them all at $6.26, this 60ml clear conformal coating with brush, rated
02:015 stars from 3,649 buyers.
02:05For a single repair or a one-off board, this is the smartest buy.
02:09It does exactly what the expensive bottles do, and nobody can tell the difference afterward.
02:15$6 for full board protection is almost silly.
02:19So who wins?
02:21For board protection, conformal coating takes it, heat shrink still wins for wire strain
02:26relief, but it can't seal a whole PCB.
02:29All 5 links are in the description.
02:32If this helped, hit like and subscribe, and tell me in the comments what you're coating.
