MasonryDefender Chimney Crown Sealer - Brushable Sealant Fixes ed Chimney Tops & Prevents Chimney Leaks

I don't usually write comments, but this product fixed my leaky chimney. I was struggling with root causing the leak. After applying, few heavy pouring tested, no leak anymore. My chimney is dry and my ceiling is dry. Thank you.

The winter will tell, but so far, has set well. It was easy to use, with clear instructions. The stuff is like thick toothpaste. Coverage is as good as advertised.

Had a cracked crown that really leaked down into the chimney cavity. Found this stuff on Amazon. Got a chimney guy here in Australia to apply it while he was cleaning the chimney. Since then we've had record rain and no leaks so it must be working. The chimney guy in Australia hadn't heard of it before but was really impressed and did a deal where he took the remaining and reduced my bill! Time will tell if it lasts but so far it's saved me at least a few hundred dollars.

My chimney used to leak like it was emotionally unstable. Rainstorms? Cue the buckets. Snow? Instant anxiety. Then I found this crown sealer — thick, brushable, and clingy in a way that actually helps your relationship with your roof. It spreads on like frosting, fills every crack like it’s got a grudge against moisture, and dries into a rock-solid barrier that laughs in the face of rain, snow, sleet, and freeze-thaw drama. Application was surprisingly easy — just grab a brush and channel your inner Bob Ross. Took me less than an hour and I didn’t even have to Google “how to fix a chimney leak” afterward. Weeks later, storms rolled through and… nothing. Dry as a dad joke in the desert. If your chimney is crying for help, this is the therapy it needs — easy to apply, built to last, and tough enough to survive whatever the sky throws at it.

Seems like an excellent product ….my chimney will let me know over time. Expensive and overpriced but nothing better available.