The nightmare I am currently living in right now is my actual experience. Home bought a paid 685K for found out through court documents cost the builder 182K to build including the land, looks great but every corner was cut in the building phase, so I have a lot of first hand knowledge dealing...
Builders these days are far from hard working and honest. They cut every corner to increase their profit margin, since home prices are stagnate and cost of materials are always on the rise.
Implied warranty of habitability is good one year from the date that you took possession of the house. In writing via certified letter explain the issue to the builder, i.e. safety hazard when wet and how it is unacceptable, ask for the condition to be fix ASAP. If no response to correct...
Did you feel like you needed to grind the floor was the etching with the kit not an option? Which clear did you go with? Could you apply the 40% discount code online or did you have to call to get it? Thanks