Concrete or Crawl Space? Why Knowing Your Foundation Type Matters.

When you walk through your home, you probably don’t think much about what’s holding you up—until the floor starts to slope or a crack appears in the drywall.

Here in Shreveport, Louisiana, our soil is distinct, and the way our homes are built reflects that. As a homeowner, knowing exactly what type of foundation you have is the first step in protecting your biggest investment.

At Stable Home Foundation Repair LLC, we see two main types of residential foundations in the Shreveport-Bossier area. Here is a breakdown of the foundations we have, how to identify them, and what to watch out for.

1. Concrete Slab (Slab-on-Grade)

This is the most common foundation type for newer homes in our area. A "slab-on-grade" is exactly what it sounds like: a thick layer of concrete poured directly onto the ground (the grade).

How to tell if you have one:

• There is no crawl space or crawl space vents.

• Your subfloor is concrete.

• Your home is relatively close to the ground level.

• Heating and cooling ducts are usually in the attic, not the floor.

The Pros: Slabs are durable and leave no space for critters to nest under your house. They are also generally less expensive to construct initially.

The Cons (and what we fix): Because the concrete sits directly on the soil, it is at the mercy of the weather. When our heavy rains hit, the clay soil expands; when it dries out in August, the soil shrinks. This constant movement can cause the slab to crack or settle unevenly. If you see diagonal cracks in brick on the exterior or doors that stick, your slab might be shifting.

2. Pier and Beam (Crawl Space)

If you live in an older, historic home in Shreveport or a farmhouse in the parish, you likely have a pier and beam foundation. This construction elevates the house anywhere from 18 inches to several feet off the ground using concrete piers or wooden posts.

How to tell if you have one:

• You have a crawl space underneath the house (often accessible by a small door).

• You can see under the house through vents.

• Floors might have a little "give" or bounce when you walk.

The Pros: This design is excellent for plumbing access—if a pipe bursts, you can get to it without jackhammering concrete. It also separates the wood of your home from the damp ground, which helps prevent termites and rot if properly ventilated.

The Cons (and what we fix): Wood degrades over time. We frequently repair pier and beam homes where the wooden beams have rotted due to moisture, or where the shims between the pier and the beam have slipped. These homes often suffer from "sagging" floors or bouncing spots that need to be leveled out and reinforced.

Which One is Better?

Neither is necessarily "better"—they just behave differently. A slab foundation relies on the stability of the soil, while a pier and beam foundation relies on the integrity of the wood and the individual piers.

Regardless of which type you have, the red flags for repair are often similar:

• Cracks in the drywall or brick.

• Windows that won't open or close.

• Floors that feel like you're walking downhill.

The Bottom Line

Understanding your foundation type helps you describe issues accurately when you call for help. Whether you are sitting on a concrete slab or elevated on beams, the team at Stable Home Foundation Repair LLC has the experience to diagnose the movement and stabilize your home for the long haul.