Can You Pour Concrete Over Grass

Can You Pour Concrete Over Grass
  • Author: Amanda Arnold
  • Posted On: May 14, 2022
  • Updated On: August 21, 2023

You are well aware of how time-consuming and difficult it is to complete any work outside of your home. There are several ways to save time and money, such as pouring concrete over grass instead of clearing the vegetation beforehand for a project.

It is not recommended to pour concrete straight on grass. Remove all vegetation and pour the concrete on a smooth, debris-free surface if you want your concrete to harden flat and smooth. In a new residence, newly poured cement is applied on a concrete pavement sidewalk.

If you leave vegetation under your concrete slab, you may encounter future issues. This article will go over some of the potential issues and some best practices for pouring concrete over grass.

Why Is It Not A Good Idea To Pour Concrete Over Grass?

When pouring concrete, ensure sure the area is level and debris-free. It is critical to maintaining the earth’s compactness and strength. Start by digging at least a few inches into the soil before pouring a concrete slab over a previously grassy area.

You want to dig down to the roots to prevent any regrowth and remove the apparent grass blades. Leaving any grass or weed roots in the concrete cracks might lead to regrowth. Although grass is unlikely to shatter the concrete itself, it can discover and push its way through small microscopic fissures that have already formed more obvious split.

Sand Or Gravel Base Is Essential For Concrete Pouring

A sand or gravel base is required for pouring concrete. Because sand and gravel are unaffected by the weather, your concrete slab will not expand or contract as the temperature changes, making it less prone to crack. Your base is more likely to shift over time if you utilize grass instead of this layer.

If your native soil is mixed with gravel or sand, this step is not required. The ground will be ready for concrete pouring by just eradicating some vegetation.

Pouring Concrete Over Grass Is Temporary

Pouring concrete on the grass isn’t a problem if you plan to remove it from its current site within a year or two. It will continue to solidify, develop, and maintain its tensile strength. In these cases, you can pour concrete over the grass if you don’t mind maintaining it.

Filling cracks and gaps is a straightforward and low-cost DIY job. Little fissures and a minor tilt may not be an issue if you’re laying concrete to support small items like air conditioners, outdoor utilities, or your mailbox.

If you want to pour concrete directly on the grass, follow the following steps;

Prepare The Area

Till the earth in your grassed area. This will uproot any existing grass, weeds, and other plants in your soil. The more tilling, the better; keep the plant fragments as small as possible, so they don’t regrow and damage the concrete.

Prepare Concrete Mixture

Slowly mix water into your dry concrete to make it ready to pour. Fold the concrete mix into the water using a shovel. Continue to add water until the mixture is malleable but not concrete soup-like.

Construct shapes to keep your concrete in place. If you reside in an area with a lot of sand, pour the concrete straight on top. Put gravel over less-sandy soil to keep the concrete from cracking when the ground shrinks and expands with warmth.

Pour Concrete

Fill the forms with concrete and smooth them out with a trowel. Dip the trowel in water and smooth the surface for an extra-smooth finish. The day after you pour, discard the forms.

What Would Be The Best Type Of Concrete For Grass?

The best sort of concrete to use on grass is quick-drying concrete. Choose a concrete that only requires water for mixing rather than one that requires multiple stages to get the desired consistency.

While lower-quality concrete is less expensive, investing in higher-quality concrete ensures a good mix of water, sand and concrete that will last longer.

Take into account the costs of materials, labor, and any garbage removal services you may require. These variables will vary according to your needs. Other patio materials, such as paving stones, are more expensive than concrete.

Final Thoughts

Although keeping grass underneath your concrete allows you some wiggle space in some projects, removing all grass and other debris is advisable before pouring. This will give you an even, smooth, crack-free appearance for many years without requiring any costly or time-consuming upkeep.

If you need to finish your patio area or shed base soon, you may want just to get started and pour concrete over the grass. There are no guarantees that putting slabs directly over grass will not cause problems in the future, but the ideas and explanations presented may help you get away with it.

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Author: Amanda Arnold

Amanda has been working with ConstructionHow since 2021. Her experience spans over 5 years in the creative niche such as home decor and trends, landscaping, renovations, and custom architectural values. As a home designer expert, she has a keen eye for the latest home improvement trends with accurate facts that readers find impossible to ignore. Being invested in home-building trends is how she has gained her lucrative expertise exploring more to bring a positive ambiance for all homeowners (and even tenants!). Currently, she lives in a beautiful beach home, a source of fascination for her.