Thermal expansion

So what else have you got here?

There's a, a couple small niche ones, um, but I guess similar to the thermal m- or related to thermal movement, a lot of times we'll have penetrations in the brick facade or masonry that's either supporting a, a larger steel beam, or I've seen, um, concrete balconies that are inset, and there's no accommodation for those materials to expand and contract.

So I've seen it where that steel beam will sh- or concrete balcony will shrink, and, and as it wants to shorten, it will pull the walls that it's sitting on inward and call the, cause those to crack.

Yeah.

But the real question is when should you be concerned about these cracks?

Yeah.

Which, which is a, a little tricky because sometimes a, a small hairline crack may be more indicative of a structural concern than perhaps a, a, a larger vertical crack that's related to thermal movement.

Um, so it, it does come down to taking a look at the crack and seeing what we think the cause is, as we've discussed before.