05/28/2026
That loud “knock” could be a dead giveaway. 👀🔨
A chimney crown may look perfectly fine from the ground — but sometimes what you’re seeing is just a skim coat covering existing damage underneath.
Here’s a quick way to tell:
A solid crown gives a dull, solid sound.
A skim coat gives a loud hollow knock.
Catching issues like this early can help prevent water damage, cracks, and more costly chimney repairs down the road.
📲 (703) 215-2338
🔗 https://www.rooftopchimneysweeps.com/