Can I fill grass grids with gravel?

Theoretically yes, but we advise against it as grass and gravel each have different properties: for instance, for grass you need to use a grass grid to which the grass roots can easily attach, while in the case of gravel you are trying to avoid the growth of weeds among others by using an anti-rooting mat. The mesh for grass grids is larger, making it easier to sow grass into them, while gravel sheets have a finer mesh, allowing the gravel to stay in place better. For the use of gravel, we recommend ECCOgravel gravel grids.