4 February

Top 8 tips for working with self-leveling underlayment

A floor that is not level is a floor that does not work as it must. It is a floor that requires to be torn up & re-installed. That is a headache you wish to avoid as it might result in greater damage & wear, not to refer to discomfort walking on it. There are several ways to ensure floors are made level & stay in that manner. One of the most efficient is a self-leveling underlayment or floor levelers.

Here are some tips for you to take a look at.

1. Selecting right floor leveler for in-floor heat

Self-leveling underlayment is a perfect choice for any tiled floor, but it is the absolute best option when installing tile above an in-floor heating arrangement.

The cement board would not work & in case you select to arrange a mortar bed, it takes a long time; it is harder to achieve a plane surface & the screening process might damage the mats or heating cables.

2. Cleaning the floor

Thoroughly sweep & vacuum the whole floor. The floor requires to be primed before applying floor leveler & you’ll need the primer to soak into the floor rather than the dust & dirt sitting on top of it. Keep a roll of tape or marker in your pocket when you are vacuuming, & mark all the cracks or holes in the wood that will require to be sealed up.

3. Installing sill sealer

A sill sealer is a packing of foam that framers use to close the connection in between a foundation & the base wall plate. It also makes a perfect hindrance to keep the liquid floor leveler from escaping to other rooms or into the base on exterior walls.

Hold the sill sealer in place with staples. Place the staples down enough so the staple holes must be hidden by the lower trim. Either 5-1/2-in. or 3-1/2-in. A wide sill sealer will do, but the higher it is, the more protection it offers painted walls from the splashes of floor leveler.

4. Priming the wood

Wood floors require to be primed ahead, covering them with a floor leveler. The floor must be covered with a leveler that is water-saturated, which will lead to the swelling of the wood. It will constrict back down when it dries that might cause cracks in the underlayment & tiles above.

The primer averts the wood from water absorption. Primer can be brushed, rolled on, or even sprayed with the help of a bottle.

5. Installing the lathe

Lathe provides strength to the underlayment. Forestall metal lathe while working with in-floor heating. Test with the producer of the heating system that the lathe must be installed under or over the mat/cables.

Layer the lathe at least 3 inches, & secure it with a staple device. Keep the lathe one inch, or so away from the walls so it does not poke thru the sill sealer while installing it. Try to maintain the lathe as level as possible, so it does not rise higher than the extent of your pour.

However, always check the durability of the mats or heating cables before you begin mixing. In case you accidentally nick or sever a cable, it is a lot simpler to repair it before the leveler is poured.

6. Prep the leveler bags

Most bags stuffed with dry cementitious blends have a vent in the top. It is there, so the bags do not bust open when they are handled.

Reduce the mess produced by the compounds of floor leveling by placing the vent side upward. Line the open bags next to the buckets. Blending is a messy job, so do it outdoors any time possible. Extreme temperatures might affect the time it takes to set up the leveler, so do not ever mix up a leveler that is super cold or work in the scorching hot sun.

7. Mixing a bunch of floors leveler at a time

Fill every bucket with the recommended quantity of water before you begin mixing. Place the buckets near each other to minimize the mess while moving the mix from one bucket to another. Keep every bucket handle facing out, so they are easy to grab.

Once you have mixed every bucket of floor leveler, get back to the first & mix it up again a few times in order to arouse the sand that has settled down. Pull the mixer out & set it in the subsequent bucket to be hauled in. Afterward, dumping every bucket, dust up the sand in the subsequent one prior to hauling it in.

8. Making a fill bucket

Make a bucket that can be quickly filled. Fill a clean bucket with the proper quantity of water & paint the fill-line with a marker on the outer side of the bucket. An alternative option is to drill pricks at the fill-line so the bucket might drain to the accurate level. Immersing a bucket into a barrel packed with water is way faster than filling it with a hose over & over again.


Self-leveling underlayment can be a simple & elegant solution for your floor problem. But one must always keep in mind how to make use of it in the proper way. To ease this process, there are some top tips provided above.

Do you plan to level your floor the right way? Here at Floor Prep, we know how crucial it is to understand the proper methods for floor leveling. That’s why we provide the best tips for you to understand & along with that, we also sell the best liquid floor leveler to our customers. To know more, contact us at 800-227-3434 or write to us at