4 Advice to Choose a Self-Leveling Compound Manufacturer

Hi,

I need to level my concrete floor and parts of it need bringing up by about 3cm. I am a novice at this but gonna give it a go myself.

Can anyone recommend a self levelling compound that has the longest drying time possible? It's probably going to take me a while to do so I don't want it drying out too quick. The ones I seem to find are rapid set and that's not what I want.

Price wise I would like as cheap as possible.

Thanks. Craigh Trouble is the depth your trying to achieve in places @30mm -

from our hosts -

Mapei Ultimate is a good product, not flexible (but not needed over a concrete floor), good price but can only pour max 10mm at a time but, can add further pours once cured

Mapei Ultraplan is flexible, so more for timber floors but no issue going over concrete, more expensive but can pour at max 40mm in one hit so more user friendly

Ardex NA, never used it myself but comes from a good quality brand - no ideas on price or depth

Prime concrete prior to pouring SL for most brands (not required with the Ardex as it’s combined with the bottle of chemical mix supplied)

Trouble is the depth your trying to achieve in places @30mm -

from our hosts -

Mapei Ultimate is a good product, not flexible (but not needed over a concrete floor), good price but can only pour max 10mm at a time but, can add further pours once cured

Mapei Ultraplan is flexible, so more for timber floors but no issue going over concrete, more expensive but can pour at max 40mm in one hit so more user friendly

Ardex NA, never used it myself but comes from a good quality brand - no ideas on price or depth

Prime concrete prior to pouring SL for most brands (not required with the Ardex as it’s combined with the bottle of chemical mix supplied)

Thanks Dave,

Well I don't mind doing it in 2 layers. I could fill the deeper parts first and let that set and then go over the rest of the floor with maybe 10mm.

So if I did it that way are there any other brands that would be better suited to what I need?

The most important thing for me is the drying time because it's gonna take me a lot longer than the average person to get it all down and then for me to spread it around and then use a spiked roller over it. I need it to stay very liquid for quite a long time as it's a bigish living room. Probably 8-9 meters by 3.5 meters.

I will have someone helping me with the mixing though to speed things up a little bit. Brand choice comes down to what’s available, price point, previous use of a brand, recommendation, and probably other things also. Personally, I’ve only used Mapei on a few occasions myself

Had my whole ground floor of house levelled prior to laying Amtico (not by myself) and choice of flooring company was Mapei Ultraplan and all been good for the last 12 years - hence my future choice of Mapei when I’ve had the need for SLC

Great that there’s two of you mixing / pouring, really does speed up the process. Hot weather is more your enemy as speeds up the drying time and working time so at the moment, not an issue. Keep windows open and heating off to max the ‘open’ time of the product - will be fine with the two of you

just look at products, pour depth, price and make a choice - some sacks are 20kg, others 25 so factor that in also with your costings

Good luck We had an old barn conversion - with a sloping shippon floor we wanted to tile. Most of the self levelling compounds we researched seemed to be rapid set...with a variety of ingredients - depending on the depth required and substrata. My wife and I realised we couldn't do the whole job in one pour - so divide up the worst areas into bays with wood strips ( of varying thicknesses ) screwed to the concrete floor and used a level and packing to ensure everything across the shippon floor was level.

We painted the floor with acrylic primer and filled the deepest bays first. The following day we removed the wood strips and filled in the shallow areas (and areas where the strips had been). I recall some flaking - when we took up the wood strips...but it was no big deal.

We used a dustbin and drill/mixer and found we needed to work fast and trowel the compound level - as 'self- levelling' is a misnomer... if you mix it to recommended consistency!

If I remember correctly we used Wickes' own brand compound as we didn't need fancy flexible latex and it was good value. Complicated, maybe, but it worked for us!

If you’re facing a cracked or uneven floor and want a quick, reliable fix, self-leveling concrete might be the perfect solution. Whether you’re renovating a basement, installing a radiant heating system, or simply updating old floors, this fast-setting, easy-to-pour material can save you time and money—while delivering professional-looking results.

Goto KDOCEL to know more.

Self-leveling concrete can be a fast, cost-effective solution to the problem whenever you need to repair, smooth, or raise a floor.

What is Self-Leveling Concrete

Self-leveling concrete is a cementitious mixture, much like concrete. But unlike concrete, it flows easier and sets up much faster. The product is mixed with water, pumped or poured into place, and spread evenly with a gauge rake. Once it’s spread out, it continues to flow evenly and levels itself out.

Now that you know what self-leveling concrete is, in the article, we’ll discuss the following:

• How Long Does Self-Leveling Concrete Take to Harden?
• 7 Tips on How to Apply Self-Leveling Concrete
• Where Self-Leveling Concrete Is Used
• Cost of Self-Leveling Concrete
• Preparing to Use Self-Leveling Compound
• Tools
• Troubleshooting Self-Leveling Concrete
• Takeaways for a Successful Self-Leveling Pour

How Long Does Self-Leveling Concrete Take to Harden?

Depending on the product, it may be smooth and flat within 1-2 hours. In about 6 hours, it may be completely hardened and ready for use, depending on the flooring material being installed on top. Self-leveling concrete can be used as an underlayment for tile, carpet, or other floor coverings.

Now, let’s clarify some things concerning product names. Instead of “concrete,” you might see products called “self-leveling underlayment” or “concrete leveling compound.” This name means the same thing as “self-leveling concrete.”

They’re generally mixtures of Portland cement, polymer plasticizers, and other ingredients. They have the strength of concrete but flow more easily and are set up quickly.

Self-leveling concrete can be poured as thin as a quarter of an inch, just enough to smooth out small imperfections if that’s all you need. But if the concrete floor has low spots and needs to be smoothed even more, it can be poured as thick as an inch and a half without adding aggregate and 5 inches with the addition of aggregate (though make sure you follow all manufacturer’s guidelines).

Self-leveling concrete works especially well with radiant heating installations because it easily flows around the tubing. The thicker floor-leveling compounds that must be troweled to achieve a proper finish can’t do this.

If you find moisture is a problem in the slab, you need to get a professional to handle the moisture remediation. You can also visit the International Concrete Repair Institute (ICRI) for more information on next steps or to find an expert to help.

7 Tips on How to Apply Self-Leveling Concrete

1. Read and follow the manufacturer’s instructions to the letter. Don’t skip or skimp on any step. And if any of these tips conflict with the instructions, go with the manufacturer’s process instead.
2. Buy more products than you need. A difference of a fraction of an inch in thickness can mean several bags of product. You must finish the job in one pour so you can’t return to the store for more.
3. Have all your tools and supplies ready. Once you pour, you may only have about 10-20 minutes to work.
4. Keep your leveler product dry – store the bags indoors and up off the ground.
5. Do not mix products in extremes of heat or cold.
6. Do not add water to the product while spreading it. The mix ratio is critical.
7. Clean all tools and buckets immediately when you’re done. If you allow the product to set it will never come off.
8. Be careful not to pour more product than you need. If you do, quickly and carefully scoop it up into a bucket and remove it.

Where Self-Leveling Concrete Is Used

Let’s say you’re upgrading an old, damaged concrete floor that’s settled or cracked. Or maybe you’re installing a radiant heating system in a floor. Maybe you’re building an addition and must match the floor to the floor in an adjoining room. Maybe you’re finishing a basement where the floor is rough and uneven concrete.

Other concrete toppings applications include warehouse floors, light industrial applications, retail stores, and institutional facilities.

Concrete toppings can also receive pigmented color dyes, stains, saw cuts or mechanical polishing to produce a decorative concrete finished wear surface.

Cost of Self-Leveling Concrete

The cost of self-leveling concrete can vary depending on various factors such as the size of the area to be covered, the thickness required, and the brand of the product. On average, a 50-pound bag of self-leveling concrete flooring costs between $30 to $60, and it typically covers an area of about 20 to 30 square feet at a quarter-inch thickness.

Keep in mind that this is only the cost of the material itself. If you’re hiring a professional for the job, labor costs will also factor in. The labor cost usually depends on the complexity of the job and the contractor’s experience and can range from $3 to $5 per square foot.

When compared to traditional concrete leveling methods, self-leveling concrete often proves to be more cost-effective due to its ease of application and reduced labor cost, although the initial material cost might be higher.

Preparing to Use Self-Leveling Compound

Before installing your new floor, there’s an essential consideration you need to address: moisture in the existing concrete floor. All concrete contains moisture, and if the moisture level is too high, it may cause the leveling compound to degrade over time.

So you need to test the slab to ensure the moisture level is not too high.

This isn’t something you can do just by looking at the slab. No matter how the slab looks, moisture deep in the slab can migrate to the surface over time and cause serious problems.

If the moisture level deep in the slab is too high, you need to take steps to remediate it before you can pour your new concrete floor.

For more Self-Leveling Compound Manufacturerinformation, please contact us. We will provide professional answers.

RH testing is the basis for the ASTM F standard. This standard governs the processes of obtaining results using in situ probes in concrete slabs. Despite the complex terminology, this test method is actually straightforward and much faster than you would think.

Once the L6 sensors are installed in the slab and equilibrated after the F requirement of 24 hours, there’s no need to move them from location to location and wait for them to equilibrate again.

Repeat readings can be taken without additional equilibration time. And unlike reusable probes, the L6 sensors never need calibration.

1. Shop vacuum, broom, and mop
2. Mixing buckets or barrels, as large as you need (6-gallon minimum)
3. Mixing drill and mixing head
4. Gauge rake
5. Cleats
6. Kraft paper or plastic sheet
7. Silicone caulk
8. Leveling product and primer

Troubleshooting Self-Leveling Concrete

While self-leveling concrete is designed to be easy to use, problems can sometimes occur. Here are a few common issues and their solutions:

Inadequate Leveling

If the compound doesn’t level as expected, it might be due to incorrect mixing or application. Ensure that you follow the manufacturer’s instructions for mixing and applying the product. Using a gauge rake can help to distribute the product evenly.

Cracking or Curling

This can happen if the compound dries too quickly, which might be due to high temperatures or low humidity. Try to control the working environment as much as possible to avoid rapid drying.

Loose or Debonding Layers

This problem may occur if the old concrete smooth surface wasn’t prepared properly before application. Make sure the surface is clean, free of dust or oil, and primed if necessary before applying the self-leveling concrete.

Moisture Issues

As mentioned in the original article, high moisture levels can cause problems. Always check the moisture content of the slab before application and take necessary steps if the moisture level is too high.

Remember, when facing difficulties, it’s always beneficial to reach out to a professional or contact the product manufacturer’s customer service. They can provide you with specific advice and guidance based on your situation.

Free Download – 4 Reasons Why Your Concrete Is Taking Forever to Dry

Takeaways for a Successful Self-Leveling Pour

Whenever you need to repair, level, or raise a floor, self-leveling concrete can be a fast, cost-effective solution.

Self-leveling cement can be used as an underlayment for tile, carpet, or other floor coverings.

For a successful self-leveling concrete installation, follow the seven tips in this article.

To ensure that your finished floor does not suffer from a concrete flooring failure, it’s essential to test the concrete subfloor for high moisture levels according to the ASTM F standard. It’s not that hard to do, and you’ve got a great product from Wagner Meters that can help.

The Rapid RH L6 system is the fastest, easiest, most cost-effective system for RH testing concrete slabs in compliance with ASTM F. It will get you accurate results in a fraction of the time versus other methods, and it’s digital, with convenient wireless communication to your smart device.

Learn more about if your concrete is ready for underlayment.

FAQs

1. Can you just pour self-leveling concrete?

Yes, you can—as long as you properly prepare the surface. Self-leveling concrete requires thorough cleaning, priming, and sealing of any cracks or gaps before pouring. Skipping these steps can lead to poor adhesion and uneven results.

2. When should you not use self-leveling concrete?

You should avoid using self-leveling concrete if:

• The subfloor has major structural or foundational cracks.
• The surface has excessive moisture or a leak that isn’t resolved.
• You need to fill very deep depressions (beyond what the product is rated for).
• You’re dealing with exterior conditions outside the product’s recommended temperature range or environment (some formulas aren’t rated for freeze-thaw cycles).

3. Can you pour self-leveling concrete over existing concrete?

Yes. In most cases, self-leveling concrete can be poured over existing slabs. However, the old concrete must be:

• Clean and free of dirt, dust, or oil.
• Structurally sound (no major cracks or crumbling).
• Properly primed with a manufacturer-recommended primer to promote bonding.

4. How many square feet does a 50 lb bag of self-leveler cover?

Coverage varies by product, but generally, a 50 lb bag covers about 20–30 square feet at ¼-inch thickness. Always consult the manufacturer’s guidelines for exact coverage, as mixing ratios and desired thickness can affect how far each bag goes.

5. How long does self-leveling concrete take to dry?

Drying times vary by product and environmental conditions. In many cases, the surface is walkable within 2–4 hours, and you can install most floor coverings after 24 hours. Check your specific product’s instructions for exact curing times.

The company is the world’s best Self Leveling Compound Basecoat Primer supplier. We are your one-stop shop for all needs. Our staff are highly-specialized and will help you find the product you need.