Rebar is the strength behind long-lasting concrete surfaces that is hidden. This can be dismantled.

What Is Rebar?

Rebar is a piece of steel in the form of a bar or mesh of steel wire meant to strengthen concrete. Concrete is strong when subjected to downward pressure or compression, but weak when subjected to upward force or tension i.e. it can take heavy dead weight above it, but when forces want to induce strain, it is weak and will crack. That is where rebar comes in. It makes concrete flexible and strong so that it is able to resist the activity of the day.

Why Rebar Is Essential for Your Driveway or Patio

1. It helps to avoid Cracking and Shifting.

Only concrete is just stiff. As Portland is a city with such variated weather (rain or dry spells), the ground under your concrete patio or driveway swells and shrinks. With the aid of rebar, the concrete would be held down avoiding giant cracks and uneven layers.

2. Promotes Load-Bearing Strength

The most needed ones to support the weight of the vehicle are driveways. The concrete is strengthened with the rebar which makes it able to sustain more weight without collapsing.

3. Prolongs Lifespan

Rebar will not only make your concrete surface appear better, but will last longer as well. This will translate to less repair and replacement of parts that will cost you in the long run.

4. Shields Against Rainy Weather of Portland

The wet seasons experienced in Portland have the ability to remove subsoil resulting in settlement. The reinforced concrete can accommodate dynamics and water damage better, which is why it has been better suited to our climate.

When Is Rebar Needed?

Not all concrete projects require rebar, but for:

• Driveways (especially over 4" thick or subject to vehicle traffic)
• Patios larger than 10x10 ft
• Any surface near sloped or unstable ground

…it’s highly recommended.

For small garden paths or non-load-bearing slabs, wire mesh or fiber reinforcement might be enough. But when in doubt, always talk to your contractor.

What Type of Rebar Should Be Used?

• #3 or #4 Rebar is common for patios and driveways.
• Epoxy-coated rebar offers extra rust resistance (a bonus in rainy areas).
• Rebar grids spaced 18-24 inches apart provide balanced support.

Installation involves placing rebar on small chairs or supports so it sits in the middle of the concrete pour, not right on the soil.

Pro Tip: Don’t Skip the Base Either

Even with rebar, your concrete needs a solid base. Crushed gravel and proper grading help with drainage and reduce settling. Think of rebar as part of a full system that ensures durability, stability, and safety.

Need Help Deciding?

At Xcelent Concrete Services, we’ve built hundreds of driveways and patios across Portland — all engineered to handle our wet seasons and busy lives. Whether it’s choosing the right rebar or planning the full concrete pour, we’ve got your back.

? Call us today or ? message us to chat about your project with our Portland Concrete Contractors. We’ll help you make sure it’s done right the first time.