{"id":578,"date":"2021-10-23T00:06:21","date_gmt":"2021-10-23T03:06:21","guid":{"rendered":"https:\/\/powertoolbase.com\/?p=578"},"modified":"2022-11-18T15:01:21","modified_gmt":"2022-11-18T18:01:21","slug":"concrete-on-grass","status":"publish","type":"post","link":"https:\/\/powertoolbase.com\/concrete-on-grass\/","title":{"rendered":"Can You Pour Concrete Over Grass? (Here\u2019s When It\u2019s OK)"},"content":{"rendered":"\n

I get that creating a firm base for your concrete can be pretty time-consuming and not something you want to be doing. So is it possible to pour concrete over a lawn?<\/p>\n\n\n\n

It’s not recommended to pour concrete directly over grass. Pouring concrete over grass is only suitable for temporary use. It’s best to remove grass before pouring concrete to prevent issues such as creating an uneven base and to avoid grass growing through cracks that develop in the concrete later on due to lack of support.<\/strong><\/p>\n\n\n\n

While it’s not a good idea to lay concrete on grass, there are times that it might be unavoidable. Follow my step-by-step guide to reduce the number of possible issues.<\/p>\n\n\n\n

What happens when you pour concrete over grass?<\/h2>\n\n\n\n

The first thing you need to do when preparing to pour concrete is to make sure that you have a flat area of compact earth that is free of stones and debris.<\/p>\n\n\n\n

Grass regrowth can lead to cracks<\/h3>\n\n\n\n

If you are going to pour concrete onto an area where there has been grass, then you need to prepare the area first so that it is ready for the concrete. To do this, you need to remove all of the grass and its roots by digging a few inches into the soil.<\/p>\n\n\n\n

This should prevent the grass from regrowing. This is essential as grass and weeds can easily grow up through small cracks in the concrete, making the crack much bigger and more noticeable.<\/p>\n\n\n\n

You will have an uneven base<\/h3>\n\n\n\n

You must create a strong and sturdy base to pour the concrete onto or you will just end up with a number of problems after it has set.<\/p>\n\n\n\n

As the concrete begins to dry, it settles down onto the earth. If the base underneath is not even before you begin, then the concrete will not set evenly, and you will end up with cracks in the concrete or slanted slabs.<\/p>\n\n\n\n

Gravel or sand base<\/h3>\n\n\n\n

Concrete must have a base of either gravel or sand before you pour it on top. This is important because sand and gravel are not affected by the weather. Because it does not expand or contract, it should not cause the concrete on top to crack.<\/p>\n\n\n\n

Also, if you do not use a gravel or sand base but, instead, pour the concrete onto a grass base, then the grass and earth underneath the concrete are more likely to move, which can cause problems for your concrete.<\/p>\n\n\n\n

However, if there is gravel and sand already in your soil, then you don’t need to use more to create a base. In that case, you can just remove all of the grass and, so long as your earth base is even, then the concrete can be poured straight onto it.<\/p>\n\n\n\n

Can you ever pour concrete directly over grass?<\/h2>\n\n\n\n

There is always a risk of cracking if you do pour concrete directly onto grass as it will always try to find a way back up to the surface through your concrete.<\/p>\n\n\n\n

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However, sometimes you might have no other option but to do it. If that’s the case, then there are occasionally times when you can pour the concrete straight over.<\/p>\n\n\n\n