I had a pool installed early last spring. What with the pool proper and the attendant trenching for gas and electricals, our landscaper did a lot of sodding. In spite of scorching drought conditions for 5 weeks, we managed, with watering, to keep about 80% of sod alive and healthy but this year I have to do something about a patch that doesn't look good. We have about 25-30 sq ft that's mostly brown with the sod seams still showing. Should I try to bring back with top dressing and overseeding, or simply replace with new?
It is gone. Pull it off and discard. Prep the soil thoroughly and then either seed and top dress with seed to match your other sod or see if you can buy a few rolls to fill in. Harvested sod should always be put down within no more than 48 hours and preferably 24 of harvesting. And, remember it is a transplant product so water it in as you go---never wait until all your sod is down to start watering.
I have mentioned in other threads you can get really nice, fresh, seed in bulk right now. It may actually establish faster than sod in the long term. You should be able to match the blend of what you have exactly. You do have to keep it moist until it germinates and that can be from 7-10 to 14-28 days depending on the type of turf grasses you plant. Don't skimp on the soil prep.