Planning to triple the size of my concrete patio. Can I pour over the existing concrete, or will that create problems? I live in Northern Illinois, so not sure if the extreme cold in the winter plays a role or not..
Hi and welcome.You can pour over the existing slab, but you need to make sure the new slab is at least 4 inches thick and that you install wire mesh. Without the mesh and if you go thinner, you will most likely get cracking in the new slab.If you need further help or clarification on this answer, please do not hesitate to reply to this post.
Licensed Architect- 16 years, L.E.E.D. AP