Originally Posted by JoJo1990
You only took part of my quote. I said that NEVER de-thatching or measuring the thatch layer is a bad practice. That was a poor choice of words on my part. It goes without saying that monitoring the thatch layer is important. I prefer to use a profile sampler as you get the full picture of the thatch layer. A core sampler would work in a pinch.
Sorry JOJO, I did misread your post.
If you have thatch it should be measured, but in this case it sounds like what you have is dead grass, I would mulch mow it and then add remaining seed needed.