Limestone may seem like a solid choice for your chimney cap, but it’s actually a BIG mistake. Here’s why:

1️⃣ Water Damage: Limestone is porous, so when water saturates it, the faces start to flake off. Once that happens, you lose the drip edge, and your chimney becomes vulnerable to more damage.

2️⃣ Concrete Doesn’t Bond: Limestone and concrete don’t mix well. Within just a week or two, you could see separation, causing serious structural issues.

If a contractor suggests limestone, it's time to get a second opinion!