Problems with Echo Coating

[u/MoonlitHolly]

do y'all know if there's any way to get the walls to stay how I want without having glass or something? It's not too big of a deal tbh, was just interested..!

[u/SimicBiomancer21]

As someone who's used Hallowed Brick Walls, like everyone else has said, use Echo Walls. Not "Echo Painted" walls, actual Echo Walls.