Said It Here

Does this concrete crack need immediate repair?

Deciding whether a concrete crack needs professional attention depends on its location, size, and whether it shows signs of water intrusion or movement. Without knowing these indicators, homeowners are left guessing whether to use a DIY fix like epoxy or pay for an expert inspection.

What people tried

Every workaround mentioned in the threads below. We haven’t tested any of them — and nobody here is claiming they worked.

  1. 1
    monitoring the crack every couple of months for gaps or vertical movement
  2. 2
    hiring an independent engineer to evaluate the structure
  3. 3
    shooting epoxy into the cracks
  4. 4
    pressure washing algae
  5. 5
    having the foundation diagnosed by a professional

In their words

Unedited, grouped by where they were said, most upvoted first within each place, each linked to the thread it came from.

r/HomeMaintenance2 people · September 2026

“How concerning does this crack look in my crawl space? Does this need immediate attention?”source ↗

Dazzling_Walk9777 · r/HomeMaintenance · 4 upvotes

“Single story home, slab foundation with cinderblock perimeter. There aren't any cracks creeping up the brick, but wondering if it is worth shooting some epoxy in there.”source ↗

Adelgander · r/HomeMaintenance · 1 upvotes

“I've only been in this house for about a year and a half, but when it rains for a long period water does encroach from the back of the backyard. There is a camphor tree about 5 ft. from the corner of the house too. If I call someone to look at it, what remedy might they recommend?”source ↗

Adelgander · r/HomeMaintenance · 1 upvotes

Where this came up

People with this problem also raised