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16 votes

Filling in a sunken living room to level of other floors

One way to raise the floor, and possibly the most reasonable cost wise, is to install what I would call sleeper joists sitting the top of the existing subfloor and than add new subfloor covering over ...
Michael Karas's user avatar
  • 65.2k
14 votes
Accepted

How do I go about repairing/redoing this uneven and damaged basement concrete floor?

The best solution would be to break it all up and re-pour a nice monolithic reinforced slab. That's also expensive and a lot of work, so you might want to consider attempting "not the best" ...
Ecnerwal's user avatar
  • 221k
13 votes

My bathroom slab is 2 inches lower than the rest of the home's slab. How should I level it?

What a great opportunity to do a slightly sunken walk in shower so you don’t need to have any curbs or whatever. Drop a claw foot on top that drains to the floor? Very cool. Definitely go with a ...
Terry's user avatar
  • 131
10 votes

How to laser-level close to a surface

That's actually the way one normally does such things, and has been since before there were lasers, other than one normally uses a rod rather than a tape for more consistent results. You establish a ...
Ecnerwal's user avatar
  • 221k
8 votes

How to laser-level close to a surface

A good ol' scrap block of two-by does nicely. Just set your laser 1-1/2" above your slab height and kick the block around as you work. This doesn't work for ceilings, of course, but hopefully you ...
isherwood's user avatar
  • 142k
8 votes
Accepted

My bathroom slab is 2 inches lower than the rest of the home's slab. How should I level it?

I would suggest using concrete and leave enough depth for expected tile work. Per https://www.cement.org/docs/default-source/fc_concrete_technology/is144-07t-resurfacing-concrete-floors.pdf The ...
MonkeyZeus's user avatar
  • 16.8k
5 votes

Does the drywall on my wall need an expansion gap below?

It seems that you are confusing two things: the purpose of the 1" gap at the base of drywall, and the expansion space needed for flooring. The 1" gap between the floor and drywall is not to ...
Cheery's user avatar
  • 7,148
4 votes
Accepted

What's the best way to level this basement floor?

My family remodeled and has dealt with old and new layers of cement. I suggest the following plan based on our educated, though non-professional experience. Leveling Old Cement Floor Preperation If ...
Micah W's user avatar
  • 164
4 votes
Accepted

What are my options to level a concrete driveway?

Faced with the same dilemma I went with French/trench drain in front of the garage. It fixed the water issue and really wasn’t hard to do with a diamond blade, skillsaw and pick. The sections of ...
freshop's user avatar
  • 1,916
3 votes

How to laser-level close to a surface

Are there any devices or techniques to make this less painful? Yes. I have built myself one (it took me several attempts), but it depends on how your laser works. Mine is basically a cylinder (blue) ...
LSerni's user avatar
  • 287
3 votes

Minimum recommended thickness for self-leveling concrete topping (skim coat)

If you are getting a 1/8" edge, you are mixing it too thick. It needs to look like it's mixed too thin, and spread it out. It will dry and you'll get the feather edge you want.
Eric Martindale's user avatar
3 votes
Accepted

Minimum recommended thickness for self-leveling concrete topping (skim coat)

The only drawback I can think of is that self-leveling products don't tend to feather themselves to a knife edge. They tend to leave an edge similar to what you'd see with a puddle of water on a glass ...
isherwood's user avatar
  • 142k
3 votes
Accepted

Laying Stone on a unlevel concrete surface

I like it and it should get rid of that trip hazard door threshold. I'd stay away from the self-leveling anything and you don't want nor should now have level anyway. As you said, you just want to ...
Iggy's user avatar
  • 10.4k
3 votes
Accepted

Subfloor repair for LVP installation

Professional flooring installers would flood from the high point to the low point with self level. They typically charge per bag and I've seen this kind of job cost 15k when done for more than one ...
Fresh Codemonger's user avatar
3 votes

How do I go about repairing/redoing this uneven and damaged basement concrete floor?

Any half hearted attempt to "repair" the floor will eventually end up cracked again, in all the same spots as they move independently from one another. The only real chance would be to cut ...
GarnetNation's user avatar
3 votes

Would you use self leveler on a 5/8 inch dip across 10 feet?

Fast answer is yes. The long answer is, make sure the self leveling material is compatible with the substrate. Also check the level of the floor in all directions. The worst thing you can do is place ...
Jack's user avatar
  • 35.8k
2 votes

How to mix a resurfacer/leveler with sand and cement?

The latex paint should not be more than 20%. So mix the latex and water at 2 to 10 and use it to mix 2 parts white cement and 5 parts fine sand. Adding ajax dish liquid (do not use dawn or ivory) ...
Saint Godard's user avatar
2 votes

Levelling across multiple garden grids or concrete path tiles

I am hearing that you have checked the regulations and want to push the boundaries and if you get caught be able to easily remove all your work. First and foremost you NEVER want a level ground in ...
stormy's user avatar
  • 280
2 votes
Accepted

Self leveling showing popped bubbles and small chunks

I just did my concrete floor for vinyl plank, and I would be concerned more for the flatness the the floor that it is within the tolerances needed. The bumps can be scraped off, at worst ground off. ...
Jack's user avatar
  • 35.8k
2 votes

self leveling layer with internal French drain

How long do you plan to keep the house? I'd just get the tiles tested and remediated. How many square feet are you thinking about? Self level isn't cheap and if you want to make your basement ...
Fresh Codemonger's user avatar
2 votes

How to laser-level close to a surface

Use a 2x2 of any suitable height. Pre-drill a hole in it (so it doesn't split), then screw in a lag screw about half its thread length. The lag screw goes down, to touch the surface being measured. ...
Harper - Reinstate Monica's user avatar
2 votes
Accepted

Basement floor leveling guidance

ok guys, here's what I did. Of the highs and low spots, I found that there were a couple dips that were significant, by the door and by the stairs/bedroom. I filled both of these in with SLC (self ...
Dolph's user avatar
  • 189
2 votes

protect drywall from self-leveling cement pour?

There is probably not a clear answer. If you want to be on the safe side cut off an inch or two (maybe more) of the drywall with the saw and use concrete expansion foam (comes in rolls) where the ...
Ride Sun's user avatar
  • 717
2 votes

Engineered hardwood over uneven basement subfloor?

I would be looking at getting some self leveling mortar/ concrete mix and at the very least, filling in those voids. Your sub floor needs to be securely fastened to the concrete floor which means it ...
JACK's user avatar
  • 82.7k
2 votes

Enclosing an attached carport w/ concrete slab. The slab is not completely level. Pour concrete over existing floor or install wooden subfloor?

Comfort is generally better with a wooden subfloor, if you have the room for a wooden subfloor. That also allows adding insulation to reduce the heating/air conditioning load (which may be minimal ...
Ecnerwal's user avatar
  • 221k
2 votes

Can I level basement floor with cement board and self-leveling cement?

start with mortar or fine concrete screed where there's a lot to fill and then use self leveling cement to finish. where the fill needed is more than 1/4" self-levening cement is best used second....
Jasen's user avatar
  • 21.9k
2 votes

Should I attempt to level my basement slab before installing vinyl plank flooring?

OK I do no get why you need to level this. To be clear if you need to the tub doesn't care. Clean/prime area and pour leveler. No issues there. However there isn't that much of a slant and I ...
DMoore's user avatar
  • 49.4k
2 votes

Use mortar between OSB and old concrete subfloor, in shower?

Most acrylic or fiberglass tubs and showers come on a base whether it be plywood or OSB. It is typical to set these in a mortar bed to support and distribute the weight of someone and water inside ...
Kyle's user avatar
  • 4,843

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