Here's one we wrapped up today. Was supposed to be a simple 1100' recoat of prefinished floor. Bid it over the phone & via texting back & forth. First time putting eyes on it yesterday. She had told me she had tried coating a hallway herself, but I didn't realize how bad a job she had done & that there was actually 2 halls & a laundry room. About 400 sq ft.
So, a simple one day job, turned into a 2 day job, not so simple. I had to physically scrape the majority of the finish she had put on, back off. If just shattered, no adhesion. Billed her an extra trip charge & T&M for the scraping.
Recoating prefinish isn't as simple as just screening & recoating. New finishes on prefinish, nothing will adhere to it. Floor rep, suggested I coat it with universal sealer (shellac) & poly. So I had her send me sample piece, to do adhesion testing on. US & poly failed. So I tried regular shellac. Better, but still failed adhesion testing. So I had to order prefinish floor recoat kit. Has a bonding agent, followed by water borne finish. A bit more time consuming than a screen & recoat, but not a bad process. Finished the master bedroom before I left yesterday & texted her on the way home, asking what she thought. Said it looked better than it did when it was new & exactly what she wanted.