The foundation is one of the most important parts of your home, if not the most important. The foundation supports the house, keeps out moisture, resists movement, and insulates it from heat and cold. While most foundations can last a lifetime without any problems, there are times when your foundation will fail in some way. Foundation failure can be caused by a variety of issues, including poor drainage, climate conditions such as drought, poor soil conditions, and leaking pipes.
A standard home inspection is an important first step, but it doesn’t necessarily provide a complete picture of your home’s foundation. Certified real estate inspector Sean Anderson explains that home inspectors perform visual, non-invasive evaluations and do not expose hidden structural components or perform engineering analysis. If there are signs of significant movement, foundation displacement, or structural changes, he recommends calling in a structural engineer or qualified foundation specialist to determine whether the movement is active or historic and recommend appropriate repairs.
Whether you’re buying a home in Seattle, Washington, or maintaining your home in Charlotte, North Carolina, overlooking foundation issues can be costly. This Redfin guide explains 11 common warning signs of foundation problems, what they mean, and when to call a professional before a minor issue turns into a major repair.
1.Cracks in the outer wall
Look for cracks along the exterior walls of your home. The surface should be inspected for small, thin cracks. However, large external cracks in a zigzag pattern can be a sign of a problem with your foundation. Additionally, you should always check for bricks that protrude from the wall.
2. Cracks in the inner wall
You should also look out for cracks along the inside walls of your home. If your door or window frame is cracking diagonally from the corner, it’s a sign that your foundation needs to be inspected. The bigger and longer the crack line, the bigger the problem. Changes in small cracks should be monitored. If it gets large or grows quickly, there may be a problem with its foundation.
3. Bowing wall
Warping walls also indicate foundation problems. Diagonal cracks on the inside or outside of the wall can indicate warping and should be noted. While you can fix the warping problem, you must also address the underlying issues that are causing the warp to prevent it from happening again.
4. Irregularities and sagging of the floor
Chris Jones of CJMC Build says one of the first warning signs to look for is how the floor feels underfoot. Bouncy floors, noticeable slopes, or areas where two floor levels don’t meet evenly can indicate movement in the foundation, problems with the frame, or an addition that isn’t properly tied to the home. While these symptoms don’t necessarily mean there’s a major structural problem, it’s a good idea to have a foundation professional determine the root cause before you proceed with your purchase.
If your floor seems uneven or sagging, try rolling the marble across the floor to see if it follows a straight path or curves toward the center of the room. This isn’t the most scientific method, but it will give you a rough estimate of the problem. In some cases, lean can be caused by improper structural design, but in most cases the problem can be traced back to the foundation.
5. Moisture in basements and subfloor spaces
If there are cracks in your foundation, you can be sure that water will find its way into your basement or subfloor space. This damp space will help prevent any foul or musty odors that might start to smell. If you notice this type of odor or visible water in your basement or subfloor space, it is essential to identify the source of the problem and take steps to minimize moisture.
Nisan Zeevi, owner of Golden Bay Foundation Builders, says older homes, especially those over 100 years old, need special attention because they have interior and exterior cracks and sloping floors.
He points out that standard home inspections don’t include professional evaluations such as floor level inspections, which can lead to foundation problems hidden in tight spaces being missed. If structural concerns are identified, buyers should obtain a detailed report and repair estimate from a foundation professional before deciding whether to negotiate repairs, request a reduction, or proceed with the purchase.
6. Separation of bent door and door frame
If the foundation moves from its original position, it can create a crooked or “out-of-square” door. This means that each corner of the door frame opening no longer has a 90 degree angle. If your door isn’t square, it’s a common sign of a foundation problem.
An easy way to identify this problem is to stand a few feet away from the door and examine the top edge of the door within the frame. You can see that there is a consistent gap between the door and the frame from left to right. If there is a larger gap on one side than the other, the door is “out of square” and can cause major problems with the foundation.
7. Pasting doors and windows
If you notice that your windows and doors are becoming harder to close, it could be a sign of a foundation issue. If an unstable foundation moves, the shape of the frame can become distorted. Doors and windows may not close properly.
8. Gaps between walls, windows and doors
Besides the fact that you don’t want cold or hot air leaking into your home, gaps between walls, windows, and doors can indicate foundation problems. Look for gaps in other interior areas of your home as well. If there are gaps above your kitchen cabinets or between the wall and the countertop, this could indicate a problem with your foundation.
9. Drywall cracks and nails sticking out of the drywall
If you notice nail heads peeking through your drywall and paint, be sure to keep an eye on them. If one or two nails break here or there, it’s easy to fix. However, if it occurs frequently, it could be a sign of a larger underlying problem.
10. Cracked or leaning chimney
If you notice that your chimney has started to lean or has cracks, you may suspect that there is a problem with your chimney. However, these warning signs often indicate an underlying problem. If you notice that your chimney is bent, call a professional to repair and strengthen it immediately. A leaning chimney poses a serious threat to your family and home as it can collapse completely. Equally important, we need to address the fundamental issues at the root of the problem. Otherwise, the chimney reinforcement may not hold up.
11. Cracked floor tiles
Of course, floor tiles can be damaged by dropping things on them. However, when this occurs, the damage is usually limited to a small area. If multiple tiles are cracked or tiles are lifting off the floor, don’t ignore the problem, as there may be a problem with your foundation.
If you see one or two of these warning signs, there’s no need to panic. Every house is calm to some extent. However, if the problem starts to occur more frequently, you may have a bigger problem. If you are concerned about foundation damage, you should contact a foundation repair company to have your home inspected. An experienced professional should be able to identify the cause of the problem and prevent further damage.
