How to tile over an uneven subfloor without tearing it up

“I’ve discovered that there are some high/low spots in the subfloor. I now feel like I’m doing more work than I need to.. Do we just us self leveler? Keep filling and sand down peaks? Put a layer of subfloor over it all? I’m so overwhelmed with this so any advice is appreciated.”source ↗

“Brand new house. Builder says this is within standards. Flooring rep says once there's rugs, furniture, curtains we won't notice. We think it's defective. Are we being unreasonable?”source ↗

“We are so discouraged, every day we cannot occupy is costing us hard money (paying rent and the mortgage for this house).”source ↗

“Appreciate someone explaining to me briefly/as a layman what I’m looking at in this room and what the options are.”source ↗

“My problem is the adjacent bathroom.”source ↗

“I see there's a ~1/2"x12" hump in front of the sink and there's NO Way laminate is going to ride over it. I can't use a floor leveler because it will run into the hallway.”source ↗

“cutting sheet flooring looks like it would be a nightmare.”source ↗

“Hello, I’m trying to install a vinyl floor and don’t know anything lol. I was curious if this subfloor was too uneven and if I should try to get it more level.”source ↗

“It’s leaning two ways, down and away from our building, plus there is an old landing that is in the mix.”source ↗

“The new exterior door threshold sits below the slab level, so i think self leveling would only work up to a point.”source ↗

“In one area, the tile is already broken/missing and there’s a thick gray/cement-like material underneath that is also breaking apart. We want to remove the carpet and eventually install new porcelain tile ourselves, but we’re not sure what we’re looking at underneath the old tile.”source ↗

“It's certainly not a rectangle.”source ↗

“After removing the carpet, I see some areas are uneven and need to be leveled.”source ↗

“Should i sand down the whole floor to level the uneven edges and then level it or just level the uneven floorboards using the feather finish.”source ↗

“First off, let it fully cure. Secondly it does look like they may have used a little to much water, thats why its so light in color. It still may be fine tho let it cure and then see whats what”source ↗

“I’m just not sure with the size of the room , its use , the cost , and the repair work done in different aged boards on the side it would be worth it”source ↗

“I'm so annoyed because at the advice of my contractor, I went to a flooring supplier and told the sales rep I needed SPC with 6-8mm core thickness.”source ↗

“Am I totally cooked??!! Our subfloors are not even (old home) and I'm furious.”source ↗

“I removed the carpet from the subfloor and discovered for the most part the floor is even, but there’s a part of it where it’s not. I’ve used feather finish floor patch, but i find it’s not fully leveled yet even after 3 layers.”source ↗

“Where the seem is between floor boards, it’s a bit higher, so I’m trying to level it on both sides.”source ↗

“In the picture 1-2, 3-4 5-6 there are still some open gaps under when i check with the leveler when i place it right on the seam. How should i approach this.”source ↗

“What can I do to leave it as is and tile over it not disrupting it at all?”source ↗

“Thank you, some places i have may be a 1/4” unevenness. I’ll just used the floor patch.”source ↗

“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.”source ↗

“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.”source ↗

“The underlayment turned out with large white streaks. These are soft and I can press my fingernail into them 16 hours after pour. What will they have to do?”source ↗

“I’m getting ready to redo my kitchen floor and this will be my first tile installation.”source ↗

“I pulled up the existing LVP and found what appears to be an old wood plank subfloor with some type of gray material/underlayment over part of it.”source ↗

“I’m planning to install 12x24 porcelain tile. The hardwood in the adjacent dining room is only about 1/4” higher than the current kitchen subfloor, so I’m trying to keep the tile assembly as thin as reasonably possible.”source ↗

“I’m a bit nervous about subfloor sheeting as opposed to another form of insulation - I’ve read airflow is important in a suspended floor and am not sure if this would be “too good” at insulating”source ↗

“I'm so worried we're stuck with these floors and so mad that I took the sales rep's word for it.”source ↗

“I hit two specific spots where the OSB subfloor is actively delaminating.”source ↗

“The wood is flaking apart, and touching it essentially makes it worse.”source ↗

“I know the ideal answer is usually to cut out the damaged section joist-to-joist and replace the OSB, but I'm honestly hesitant to cut into it if I can avoid it.”source ↗

“I've since added an interior perimeter drain with a sump pump which will hopefully prevent these saturated ground conditions from happening again.”source ↗

“The slab is uneven, has some past moisture damage (efflorescence), and a few areas where old self-leveler is crumbling/flaking.”source ↗

“I've been given two very different suggestions which I'm looking to select from.”source ↗

“Iv been there. Bit off way more than I could chew as a first time diy”source ↗

“Some spot through out the house, step on it and feel kind of sunk down and rocking.”source ↗

“Panel with tape cracked after moving living in house for a few weeks, high traffic pathway.”source ↗

“It’s just so easy to tell it’s laid over tile, unsure how to describe it but it moves around in a way the LVP in other rooms doesn’t.”source ↗

“Is there a way to replace it with different LVP and not have that feeling when you walk on it?”source ↗