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

A good product for multiple surfaces from chimney caps to driveways.

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.

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.

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