Question: You did not answer my previous question. Why is my grass growing in somewhat raised clumps with bare spots in between the clumps.
Answer: The type of turf you planted is probably a tall fescue. Tall type fescue does not spread, therefore it will clump if not planted thick enough. Plant more seed and that should take care of the clumping.
Q&A Library Searching Tips
When singular and plural spellings differ, as in peony and peonies, try both.