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Questions tagged [self-leveling-concrete]

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How to level "bowed" concrete floor

I am going to put a rigid insulation board on my concrete floor in the basement. However, I have a small section of the floor that is higher, which is not problematic in itself. The real issue is that ...
Dan's user avatar
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27 views

Can I mix different brands of self leveling concrete?

Like an idiot, I forgot to apply the primer to my floor before mixing a bag of Mapei self leveling compound. I think that once my primer sets, it will be too late to pour the compound. I need two full ...
J. Scott's user avatar
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1 answer
23 views

Pouring self-leveling cement over old mosaic tile mesh underlayment

My house build in the 1960s has a bathroom that appears to have been once tiled with those mosaic tiles that contained a mesh backing. I'm hoping to tile over the current thinset and remnants of the ...
J. Scott's user avatar
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1 answer
47 views

What kind of concrete repair material should I use to fix this peeling patch in a sloped drain that is puddling water?

How should I fix this drain slope that was patched and now has a high spot, making the water pool and soak under the peeling patch instead of making it to the drain? I'm a DIY'er so would be looking ...
MonkeyBonkey's user avatar
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3 votes
2 answers
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How should I repair a crack on my garage slab at the overhead door line?

We recently bought a house with a garage attached to it. Like many garage concrete slabs, it is cracked, just outside of the garage door (see picture). Since the area sees a lot of car/motorcycle ...
Pierre-Olivier Leroux's user avatar
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32 views

Removing self-leveling concrete from wooden subfloor?

My partner and I are replacing the carpet in my office with vinyl(w/ cork underlayment) flooring. After tearing up the carpet we noticed the wooden subfloor in one corner was messed up. It's like the ...
AbbyTheConqueror's user avatar
2 votes
1 answer
153 views

How to fix this self-levelling gone wrong

Embarrassing, yes - but I have laid a self levelling compound and it has gone wrong. The pour went very well in terms of planning and timing, resulting in a very good looking result. I used a spiked ...
hazymat's user avatar
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Do I need to add self leveling compound for sloping slabs before installing LVP?

I have level and flat slabs of concrete on each side of a crack, the crack runs down the center. I intend to run the planks parallel with the crack. Based on my photos, would I be able to get away ...
Devin's user avatar
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39 views

What is the difference between Ardex K22 F and Liquid Backboard?

I noticed that Ardex has a few different self-levelers. For example, K22 F and Liquid Backerboard. They both seem to serve the same purpose - self-leveling below flooring without the need for metal ...
Ryan's user avatar
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93 views

Do you really add a full 1/2" of self-leveling concrete above electrical radiant heat wires for LVF or do you use less in practice?

How much self-leveling concrete do you typically add above electrical radiant heat wires for LVF? LVF manufacturers recommend 1/2" of concrete on top of any radiant heat. Since the wires are 1/4&...
ARClimber's user avatar
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Raising Concrete Floor 1 Inch for Tile

Looking to tile a basement landing as a transition from the stairs to the main room. The main room is done with DMX 1-step, 5/8 OSB and laminate flooring, so there is about 1.5" between the top ...
Tony Gweesip's user avatar
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121 views

How to rebuild door threshold when using self leveler to outside door

I am pouring self leveler before putting in new floors. I have to raise the floor 1 inch. How should I rebuild the threshold of the outside door? I thought to just use self leveler all the way to the ...
Croeber's user avatar
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Leveling a floor without a foundation?

I need some advice. I bought a house that is lacking a foundation in certain areas. Huge mess. I've decided to make it as attractive as possible (and rent it out) until I can tear it down and rebuild, ...
TayTayAllDay's user avatar
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1 answer
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Do I self level the Shower Pan or rip out the brand new 3/4 flooring?

Due to a series of unfortunate events and being in a location where people are not known for being reliable, I've wound up with a 3/4" plywood floor in my master bathroom that is not level nor ...
WastedMoney's user avatar
2 votes
1 answer
161 views

Need help on how best to level this floor

I'm planning on installing LVP in my bathroom - it is about 68 sqft of flooring. The floor is unlevel, sloping 3/4" at the worst location. A floor joist had been cut straight through by the ...
Niko's user avatar
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How to spot-fill low spots in concrete self leveler for shower pan?

I am attempting a shower renovation. I poured self leveler in the shower area to smooth out the surface for installation of a Schluter foam pan. I ended up with some low areas, and I'm looking for ...
Mark D's user avatar
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Using Self Levelling Compound over wooden subfloor upstairs

So my question is less about how to use the Self Levelling Compound but more the complications of using it. For instance in my master bedroom we are looking to install LVP. I have laid down thick 25mm ...
A.Smith's user avatar
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1 answer
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Can I level a floor with joint compound?

I am working on a house that has been lifted 7 feet in the air. What it looks like is that they leveled the out side perimeter but when they put the post in the middle of the house they didn't check ...
Dennis Johnston's user avatar
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0 answers
236 views

Epoxy over Self leveling Compound Cracks

I'm trying to put flooring down in a kitchen but I ran into some issues and I'm looking for general advice. The floor started with old but decent condition plywood with some old patchy black adhesive ...
ElectronHammer's user avatar
2 votes
1 answer
111 views

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

I have a room where I want to lay down LVP but the middle of the room dips down to 5/8 inch across 10 feet. I'm planning on using self leveler here. Is this an acceptable fix?
Andy Cheng's user avatar
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1 answer
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Self-leveling concrete basement floor for tile installation

I’m renovating my basement and I’m stuck with a floor-leveling dilemma. The area in question is a half bath, which is about 6’ x 6’. The bathroom is in a corner of the basement. Right now the bathroom ...
Kilroy's user avatar
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-1 votes
1 answer
817 views

LevelQuik Primer did not dry to clear

I sealed all gaps and applied LevelQuik Primer over plywood in my bathroom to prep for LevelQuik RS Self-Leveling Underlayment. I used a small paint roller to roll it on. It has not dried to clear and ...
Nate's user avatar
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1 answer
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How do I fix the gap between my driveway and floor?

Given the extensive shifting of my driveway caused by clay soil and intense summer heat, resulting in substantial cracks and exposed rebar with separation from the garage floor slab, I'm contemplating ...
Tommy's user avatar
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2 answers
901 views

Can I install concrete leveler over a crack isolation membrane?

I accidentally laid Mapai aqua defense crack isolation membrane instead of concrete primer prior to applying a self leveling compound. How much trouble am I in? I’m preparing my bathroom floor to lay ...
Cat111's user avatar
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11 votes
3 answers
6k views

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

I've got a section of my basement that I want to turn into a workshop, but one of the many things to improve is the floor. I want a smooth level floor for this section of the basement (I might ...
David Garrison's user avatar
0 votes
0 answers
151 views

Can you cut self leveling concrete with a concrete saw?

I am looking to remodel a basement and I really like the concrete finish look with a clear coat of opaque epoxy over the top. I don't want the floor to be one continuous piece. Its an older home with ...
Pete Screwball's user avatar
0 votes
2 answers
537 views

Can sealed self leveling underlayment alone support the weight of a washer and dryer on a laundry room floor?

In my laundry room, I poured some LevelQuik RS self leveling underlayment over a lumpy concrete slab (I put cement primer on first). The underlayment was about 1/4 inch thick at the thinnest parts. I ...
Mike Eng's user avatar
  • 218
0 votes
1 answer
399 views

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

I'm working on replacing the carpet in our basement bedroom with some vinyl laminate flooring. I noticed that the concrete appears to have domed cracked / domed in the middle so I need to flatten ...
Ryan P's user avatar
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1 vote
1 answer
1k views

Best self leveling compound to use for this situation with LVP (1/2" feather edge thickness) [closed]

Looking for advice on which type of self leveling compound to level most of the concrete floor tied to this question asked earlier. I want to make it close to 6/16" min relative height so its ...
ChucktheDuck's user avatar
1 vote
0 answers
318 views

Self Levelling and Liquid DPM over damp on ground floor quarry tiles - disaster

I have a question about rising damp on quarry tiles ground floor in old building. I removed the old carpet and realised there was damp patches on the tiled floor below, im believe there is no dpm ...
Wal Comps's user avatar
0 votes
1 answer
347 views

Thickness of concrete base layer for leveling basement floor

TLDR question: How thinly can I feather regular concrete to roughly level my basement floor as a base for self-leveling compound? Background: I am in the process of re-finishing my basement after ...
Sasaui's user avatar
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0 votes
1 answer
238 views

What should I do about crack in concrete subfloor? A foundation contractor has already stabilized the foundation

About two years ago I noticed some cracks in the drywall, so we had a foundation contractor come out and stabilize our foundation. They removed all the trees close to the house, added gutters and sump ...
Art's user avatar
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1 vote
2 answers
5k views

How can I prep for vinyl plank flooring over uneven concrete & linoleum floor?

I'm hoping to install vinyl plank flooring. The floor is partially bare concrete and old linoleum - it's also not level at all. Can I pour a primer and self-leveling compound over a floor that's ...
Austin Seward's user avatar
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0 answers
162 views

I’m looking for a concrete material for skimming over existing concrete 1.5” thick to 1/8”

I’m looking to fix my side walk. The slabs are 8’ long. I want to lay a new material over top to make It look like new concrete
CBR Contracting llc. Eddie M.'s user avatar
1 vote
2 answers
7k views

Adding 1/2" to 1" height to slab cheaply, then finishing with 1/4" self-leveler

TLDR: I want to level the floor using self-leveling compound, but I need to bring the overall price down. I'm looking for ideas about how to cheaply (and quickly/roughly) raise the low spots to just ...
mattalxndr's user avatar
5 votes
4 answers
4k views

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

I am renovating our primary bathroom in our 1958 home. I demoed the tile and decided to demo the dry pack used to float the bathroom. After getting the dry pack out it appears my bathroom slab is ...
s3aborn's user avatar
  • 53
1 vote
1 answer
102 views

Floor Leveling/Finishing Options [closed]

I'm considering a few different options for leveling and refinishing an old floor and I'm looking for second opinions. The floor is roughly 13'x28' on the top 3rd floor of a ~120 year old row house. ...
ElectronHammer's user avatar
2 votes
1 answer
354 views

Leveling old floor for LVP planks [closed]

Here is my kitchen rennovation. About 240 sqft, 5/8 plywood subfloor. I Put in almost 500 flooring screws beside the nails, not glued down. 36 year old home, dimentional lumber in Brampton Ontario. ...
Dan's user avatar
  • 21
1 vote
2 answers
5k views

Can I pour self leveling cement over this carpet glue residue

In my basement I removed old carpet planning to install LVP, so I need to flatten out the slab a bit. The carpet left a thin glue residue over the entire floor that I've been trying to remove before ...
AJD's user avatar
  • 111
0 votes
0 answers
1k views

How do you level-out unlevel plywood subflooring?

On concrete floors you can pour self-leveling cement to fill valleys. How do you fill valleys on plywood sub-flooring?
Samuel Muldoon's user avatar
0 votes
3 answers
2k views

Can I use self-levelling compound over old carpet adhesive?

Can I use self-leveling compound over old carpet adhesive? I've ripped up the current carpets and found a couple of strips of very old carpet glue that are proving a NIGHTMARE to remove from the ...
David Lazarus's user avatar
0 votes
1 answer
226 views

underfloor heating element, self-levelling compound - avoid springiness and cracks

I have an underfloor heating element laid on a 6mm thick insulation board. When I walk on it, I can feel that its slightly springy. I want to pour a self-levelling compound on top as a finish but I ...
Daniel Katz's user avatar
0 votes
0 answers
349 views

Replacing tile, cracked floor by door sill

We've lived in our house for two years now and recently noticed that some of the tiles by the front door were loose. The assumption was that they were not well mortared and that removing, cleaning old ...
renesis's user avatar
  • 201
0 votes
1 answer
556 views

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

Replacing a shower pan in a 32x32 alcove. The prior acrylic base was bedded in mortar on top of concrete subfloor. The new pan I intend to buy has an OSB and foam underside, seemingly meant for a flat ...
Scott's user avatar
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0 votes
0 answers
401 views

How to prep this concrete shower floor for a replacement acrylic base?

Ripped out a shower surround, replacing with new wall panels and shower pan. The prior pan was set in some cement or thinset, and that's left a very uneven surface. How do I prep it for the ...
Scott's user avatar
  • 175
0 votes
0 answers
276 views

Can you put Hardy backer board on top of Mapie self leveler plus?

I have already applied self leveler in my bathroom over brand new plywood subfloor. I have got Mixed opinions if I can use Hardy backer board on top of the self leveler.
Steven's user avatar
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1 vote
0 answers
88 views

Hiding a severely dished bedroom floor

I have a bedroom with a hardwood floor that is severely out of level. I would say is is 1.5 inches out of level over 6 feet, with the lowest spot in the center of the room. I do eventually want to fix ...
darkness's user avatar
0 votes
0 answers
4k views

Self-leveling concrete prep: how to fill large gaps?

[Note: Variations of this question have been asked before, but the ones that received answers were talking about sealing gaps for other purposes. So here goes.] TL;DR: I have 3/4”-1” gaps at the edges ...
ingernet's user avatar
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0 votes
0 answers
4k views

Peel and stick vinyl on existing tile - how to best level the tile floor for installation?

I knew installing peel and stick vinyl planks on uneven surfaces was a bad idea, but I decided to go ahead anyway (big mistake). It looks a lot worse than I originally expected, as the bulge is very ...
HuN's user avatar
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1 vote
1 answer
3k views

Best way to correct one inch dip in middle of second floor master?

We’re installing hardwood flooring in our second floor master bedroom. House was built in 1993. When we pulled off the carpet we realized the floor dips in the middle. The room is 18 ft (north-south) ...
Dave Friederichs's user avatar