If you’re installing plywood over an existing dry concrete floor, you shouldn’t have any problem. However, a new concrete floor contains a lot of moisture. So, you need to allow it to cure for at least 60 days before even bothering to check the moisture level.
How do you raise the height of a concrete slab?
If you don’t want to go to the trouble of raising the height of the entire floor, you can apply floor leveling compound just to the area around the doorway. Apply the compound and feather it out with a trowel for several feet or more into the dining room.
Can I use plywood to raise a floor?
If you are laying ceramic tile, then covering the subfloor with sheets of 1/2-inch cement board is usually enough to smooth out relatively minor dips. Keep in mind, though, that plywood or cement board laid directly over the existing subfloor will raise the height of the floor.
How do you raise a concrete subfloor?
The easiest way is to use a self-leveling compound, also called liquid floor underlayment or floor resurfacer, within sections of level-cut rails. The material flows out like thick syrup, then hardens into a smooth, perfectly level surface, sometimes in less than an hour.
Can you level a concrete floor with plywood?
If you’ve got a plywood subfloor, like many buildings do, you can leave it in place and apply self-leveling concrete directly on top of it. Once the plywood subfloor is covered, just apply the finish you want to achieve the desired look.
How do you attach plywood to a concrete slab?
Quote from the video:
Quote from Youtube video: It's better if you cut them down in a four by four pieces if the plywood's not completely flat that way the the boards lay flatter.
How do you raise the height of a subfloor?
The cheapest ways to raise your floor height include filling the floor with some insulation material, installing a wooden frame subfloor, using a floor leveling compound, and using deck mud. The best approach to use is often determined by the flooring material in use for the project.
Can I build a subfloor over a concrete slab?
For above-grade applications, your flooring manufacturer should provide recommendations for installing a floated subfloor. For on-grade and below-grade installations, however, NWFA guidelines recommend a vapor retarder anytime you’re installing solid ¾” wood flooring over concrete.
How do you build a subfloor over uneven concrete?
6 Ways To Fix Uneven Subfloors Or Concrete Slabs
- Use Self-Leveling Concrete/Underlayment. How to Self Level Concrete Floors Like Pros – Self Leveler. …
- Install A Flooring Underlayment. …
- Grind Or Sand The Subfloor. …
- Replace The Subfloor. …
- Fix Your Floor Joists. …
- Stabilize Your Foundation.
What kind of flooring can you put over uneven concrete?
For very uneven flooring, laminate sheets or tiles may be a better bet. This material is more flexible, but may reveal the imperfections in the surface. The most durable and attractive option for an uneven floor is often a pour on option, such as epoxy.
What is the cheapest way to level a concrete floor?
There are self-leveling coatings designed to fill gaps and cracks. You could also try using vinyl floor tiles to make the transition more gradual. Probably the easiest (and cheapest) thing to do would be to get a big diamond grinding wheel and bevel down the lip.
What flooring can I lay on uneven concrete?
Floating Floor – The Best Floor For Uneven Surface
The floating floor application allows the flooring material to attach to itself, rather than be nailed to the subfloor. Because a floating floor installation isn’t fastened firmly to the subfloor, it doesn’t show the imperfections of the underlayment.
Can underlayment be use to level floor?
Use an underlayment, floor leveler or floor patch product to fix low spots in a wood or concrete subfloor. An underlayment is a thin layer of material sandwiched between two other materials. It’s used to help insulate, absorb sound and reduce wear on your floor. It can also serve as a vapor barrier.
Does underlayment help with uneven floors?
The sub-floor is the very base of support for any flooring. An uneven sub-floor can cause issues to arise prematurely even if the floors are top-notch. Underlayment can serve as a relatively simple fix to an uneven-subfloor.
