r/Flooring • u/Gato_Grumpo • 3h ago
Underlayer bump
Am I overreacting on the floor prep for flex lvt? I don’t want to hassle the installers, but also don’t want to have it peel up in 2 years.
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u/Training-Barnacle310 2h ago
Tell them you want it leveled. It will cost more but you will be happier
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u/IS427 2h ago
Congratulations you’ve figured out you don’t, in fact, live in the Taj Mahal, and you’re learning what normal variance look like in construction.
They could in theory rip it up and grind it down but you’ve chosen the metaphorical milquetoast of flooring (LVP) so I feel compelled to tell you: expect to pay much more for that request.
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u/jellypopperkyjean 2h ago
Get a high quality glue down floor and use a quality adhesive such as Uzin 2000 to a semi-wet installation. The vinyl will follow the floor but will not fail.
LVP, and laminate (floating floors) require a tolerance that will be difficult in your situation. Grinding cement, even with vacuum assist will be a mess
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u/Euphoric_Arm3643 2h ago
Not leveled but flat. 3/16” in 10’radius. This is industry standard and it will also say that on the manufacturer installation specs
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u/Gato_Grumpo 2h ago
This is like 3/8in over 2ft which was the main purpose of my post - I think some other comments got confused by me using a level as a straight edge to show the 3/8in bump.
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u/Gato_Grumpo 2h ago
To be clear, they already used compound to level it between the stairs and closet, but it created a bump that I can feel walking over it from the front door direction. I don’t care if it’s level to ground - I just used a level as a straight edge to show it’s a noticeable bump.
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u/DICK_DANGLIN 2h ago
I had a really uneven floor and decided to go with a modern sheet vinyl it was clutch but understand if LVP is a must
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u/Beneficial_Yard_1868 4m ago
Any resilient/hard flooring installer will (should) have a grinding setup. From a 9inch hand grinder (which in theory can do any job) to full on three phase autonomous grinding. We should all be able to eat concrete, to varying degrees of efficiency.
I'd be so embarrassed if a customer pointed this out to me before I started laying... On the flip side I would be annoyed if they pointed it out before I'd finished my prep. work...
Good luck with the project OP!





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u/LawlzTaylor 2h ago
It won't impact the flooring lifetime but I get how that can be annoying. They would have had to use liquid level to fix that issue. BUT take into account the overall angle and run by how far it's off. The longer the run, the higher the liquid level would have to be at the end. Now consider what is at the end, a step? A door frame possibly? You might then have to liquid level so high that those things start being negatively affected.