Get matched with top concrete driveway pros in Liberty, ME

Most of the time, you or your contractor will spray the concrete form and framework with a release agent or oil to prevent sticking. This is common practice with wood and steel forms. For insulated concrete forms, the styrofoam formwork often remains in place after construction, so you don’t need to treat it beforehand. Foam concrete forms made out of melamine also may not need treatment beforehand, as the material naturally won’t stick to the concrete after it’s cured.

Concrete cracks can occur at any time. Many cracks actually happen within a few hours or days of pouring the concrete because of mistakes made during the process; here are a few reasons for freshly poured concrete cracks.

If you’re nervous about causing cracks when pouring concrete, hire a pro to handle the work, rather than tackling it yourself. You can also prevent ongoing cracks by taking care of your concrete pathway or driveway with a little sealer. Here’s how often to reseal your driveway to reduce the risk of cracks.

You can dry pour concrete over existing concrete, but it’s best to use wet pour concrete instead. Dry pour concrete is easier to apply, but in order for new concrete to adhere to old concrete, it needs the right mixture for slow, uniform curing. Additionally, dry pour concrete is less durable and less resistant to cracking and concrete sinking, so dry pouring over an existing slab may result in surface imperfections appearing prematurely.

There’s no legal requirement that states that you need rebar in a concrete driveway, but since the slab will be supporting heavy vehicle loads, it’s always a good idea to pay a bit more for rebar reinforcement. Your driveway will be much more likely to crack if you don’t reinforce it with rebar. Driveways that need to support commercial vehicles or provide parking for multiple vehicles at once should always include rebar reinforcement. If you’re pouring concrete over asphalt or pouring concrete over an existing slab, you may not have enough depth for rebar, meaning an increased risk of cracking.