Any advice for house with vinyl. I don't think the screeding was done well hence some parts of the flooring can tell the vinyl isn't in total contact with the cement when you walk over it can hear it tap the cement. Are there any floor contractors that can save a botched job?
Have you moved in? We called this air pocket. During screeding, the mixing of premix and water is not thorough. So some cement will have more water content. After screeding, the screed suppose to be even. But when it dries up, the floor level will go down as the water has evaporated. So those part that has more water content will sink down more resulting to slight unevenness of the screed.
Usually we cant tell by walking on it after screeding. We are talking about 1-2mm drop in 1-2 meters. But there some screeder who cant do their job well leaving a huge bump resulting to wavy floor.
So you case now is after vinyl you can feel the air pocket only or you can feel a big bump?
If just the air pocket only, the vinyl will settle and sit on the floor shape after u move in. If its a big bump, you need to get someone to remove the vinyl and screeder to grind it or patch. The cost will be around $1000. Provide you are using vinyl. If yours is SPC, the air pocket will not go away as SPC will not sit nicely on the cement floor no matter what you do. Unless you remove all the spc, do a self leveling compound and put the spc back again.
Removal cost $400, self leveling $1200. Install back $600. Also during removal, 30% of the spc cannot be used as the click is broken. You need to buy stock from the vendor you installed the spc.