Chimney Crown Sealer

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.

While long term results can't be guaranteed, initial impressions are very good. As long as you prepare the surface correctly, this stuff will stick well. One negative review I saw showed the product had been applied to a very dirty surface. Just like painting, surface prep is one of the most important steps in the process. As well as a chimney cap, it was applied to the top of a small retaining wall along our driveway and looks a lot better than bare concrete.

This stuff works.

just as described, it worked well I painted the cap of my chimney. It's nice and solid and a rightness about a year after I put it up. It's still working fine.

Four stars because I only applied it last month. But so far, so good in an exceptionally rainy fall in the Pacific Northwest. When a puddle appeared in front of my gas fireplace insert, I tied a rope around the chimney and got up on the roof. There were cracks in the chimney crown which seemed to be made of crumbly mortar. Maddening because the mason charged me a fortune for it not very long ago. The product was easy to apply. There are some very good YouTube instructional videos incl. one that features a woman applying the product and talking thru all phases. I have a large chimney with three stacks so had to a lot to cover on a steep roof. My work wasn't quite as neat (bring a wet rag with you) and I think I applied it too thick because it wasn't quite set up when I climbed down. Rain started again shortly after but no water got in and everything has been dry since. It looks good from the street and so there's no water getting into the chimney. Recommended.

Easy to use. Only needed 1/2 gallon size to put 2 coats on chimney cap. Still had enough left over for touch ups. Waiting to see how it holds up.

Great product. Love the outcome. Follow the directions and results are as stated!

I did not realize how bad a shape my chimney crown was until I was able to get view from the top down. There were small chunks and cracks on the top that I could not see from looking up. The product is thick when applying, just get a couple of good paint brushes and take your time. It's a good idea to tape off the bottom and other areas if you want a clean, professional look. Highly recommended for do-it-yourselves.

Very happy with product. Nice to work with. Ken

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.

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

Wire brushed the cap, then applied only one thick coat as the temp was falling and rain was in the forecast. Luckily the rain held out for 5 or 6 hours and it all went smoothly. Went back up on the roof a week later and it was completely cured and bonded perfect. Used about 2/3rds of the pail will apply second coat in the spring. Time will tell if it lasts. Update...After a long cold winter it was perfect, used the rest of the pail to fill in any depressions etc in early spring. Looks great.