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How Do You Know If Foundation Damage Is Getting Worse?

Last updated October 26, 2026

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The short answer

Track Crack Changes

Cracks are the most obvious sign that foundation damage is progressing. Measure the width of each crack with a tape measure and mark the ends with a pencil. Write the date and width on the wall next to each crack. Compare your measurements every few weeks to see if any crack has grown longer or wider.

New cracks appearing in places where none existed before are another red flag. Hairline cracks that suddenly branch out or zigzag often indicate ongoing movement. Pay special attention to cracks that run diagonally from window or door corners, as these frequently signal structural stress. Photograph each crack with a ruler beside it for an accurate record.

  • Crack wider than 1/4 inch
  • Crack that grows by 1/8 inch in a month
  • Cracks that form a stair-step pattern in brick
  • New cracks near doors or windows
  • Cracks that reappear after patching

Test Doors and Windows

Doors and windows that stick or scrape are practical indicators of foundation movement. Open and close every door and window in your home once a month. A door that used to glide smoothly but now catches at the top or bottom suggests the frame has shifted. The same applies to windows that suddenly require extra force to slide.

Gaps between a door frame and the wall, or between the frame and the door itself, can also appear or widen. Check for daylight visible around the edges of an exterior door. If a door that once closed flush now leaves a noticeable gap at the top or bottom, that is a sign the foundation may be settling unevenly.

Watch Floor and Wall Movement

Uneven floors are a clear warning that foundation issues are advancing. Place a marble or golf ball on a flat area of your floor and see which direction it rolls. If it rolls faster or in a new direction compared to a few months ago, the slope is changing. You can also use a long level to check for dips or humps in the floor.

Walls that bulge, bow, or lean inward are serious indicators. Press a straight board against your basement or crawlspace walls to see if there are gaps. Cracks that follow horizontal lines along a wall, especially with a slight bow, often mean soil pressure is pushing against the foundation. These changes deserve attention from a professional.

Check for New Moisture

Moisture around your foundation can accelerate damage, so inspect the perimeter of your home regularly. Look for puddles that linger after rain, damp soil against the foundation, or water stains on basement walls. Downspouts that empty too close to the house can saturate the soil and cause shifting. If you live in Chapel Hill, keep your gutter downspouts directed well away from the foundation.

Indoor moisture signs matter too. Musty odors, efflorescence (white powdery residue) on basement walls, or peeling paint near the floor can indicate rising dampness. A water damage assessment can identify hidden leaks or groundwater issues that worsen foundation problems. Catching moisture early helps prevent further structural movement.

Document Everything for Insurance

Keeping a written and photographic record of your foundation damage is important. Note the date you first noticed each crack, gap, or uneven area, and add new observations as they appear. Save all photos with timestamps. This documentation helps you track whether the damage is truly getting worse over time.

If you file a claim, your insurance company will want clear evidence of when and how the damage progressed. Policies vary, and your insurer decides what is covered. Thorough records give you a stronger basis for discussing your situation with them. A water damage documentation service can help organize this information, but you can also do it yourself with a notebook and phone camera.

Water damage does not wait

Water keeps spreading into floors and walls, so it is worth acting early. Calls are answered 24/7.

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Frequently asked questions

How often should I check my foundation for damage?

Check your foundation once a month, especially after heavy rain, drought, or any nearby excavation. Monthly checks let you spot small changes before they become major problems. Keep a simple log with dates and measurements so you can compare findings over time.

Can I fix foundation cracks myself?

Small hairline cracks can be filled with epoxy or polyurethane, but that only addresses the surface. If the crack is widening, the underlying soil or drainage issue needs attention first. For structural cracks or bowing walls, consult a professional who can assess the cause and recommend proper repairs.

What causes foundation damage to worsen quickly?

Rapid changes in soil moisture are the main culprit. Heavy rain saturates the ground, while dry spells shrink it, causing the foundation to shift. Poor drainage, leaking pipes, and tree roots near the foundation also speed up damage. Addressing these factors quickly can slow further movement.

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