In our area, most likely your soil has either too much clay or sand and/or very little organic matter. This hinders your lawns ability to break down thatch which is dead grass and other decaying plant matter. Plus, if your soil is clay, any water will remain in the ground without draining. Because of this, thatch can’t decompose like it should due to the lack of organic material.
If you have a hardy topsoil, the thatch will retain water and balance its production. So, if your soil is lacking, you can address and fix this problem. There are two ways to do so, one is to add soil and till it into the ground before laying the sod. The second way is to amend the soil by top dressing and adding small amounts of ORGANIC soil over time.