Cracks Above Your Doors and Windows: Cosmetic or a Real Problem?

Few things make a buyer's stomach drop like a crack running up from the corner of a door or window. The mind goes straight to “foundation problem” and dollar signs. Sometimes it is — but a lot of the time, it's cosmetic. Here's how I think about it when I'm walking a home.

Why these cracks are so common

There's almost always a drywall joint at the top corner of a door or window — that's just where the sheets of drywall meet around the opening. That joint is a natural weak point. If a door gets slammed over and over, the vibration can crack that seam, especially when the joint isn't on the hinge side of the door. That kind of crack is cosmetic — it's the drywall telling on a slammed door, not the foundation failing.

How I tell cosmetic from structural

I don't assume — I look at the whole picture. A single hairline crack at a door corner, with everything else square and solid, usually isn't a concern. But I start paying closer attention when I see things like:

• Cracks that are wide, growing, or run at a diagonal from the corner
• Doors and windows that stick or won't latch
• Floors that slope or feel uneven
• The same cracking showing up in a pattern around the house
• Separation at the exterior brick or around the slab

Those are the clues that point to actual movement, and that's when I dig deeper.

The bottom line

Many cracks above doors and windows are cosmetic — but not all of them, and the only way to know is to read the whole house, not just the crack. That's exactly what a thorough inspection is for. If a home you're looking at has cracks that worry you, let's take a real look before you assume the worst.