Levelling the floor in downstairs bathroom before tiling

Question Icon
Posted by: from Lloydminster
9/29/2012 at 11:58:51 AM

How do I apply the floor leveling cement? And what should I be aware of?

User Icon
Date/Time9/29/2012 at 1:12:58 PM

The most important thing to do before applying self leveling compound is to make sure concrete is cleaned off as much as possible, grinding maybe be required. Use floor leveling concrete primer allow adequate time to dry. Mix the leveling thin set according to directions for first time use a delayed setting type.

I like to use a product from Custom called Level Quick that is available from most wholesale flooring suppliers or from Home Depot.

Allow a day or two to dry before applying tile. If you are putting down a heat mat like Nuheat it goes down before the primer.

Most self leveling compounds only allow a maximum slope in floor of 5/8- 3/4 inches. If greater than this a dry pack compound is recommended.

Happy Tiling

User Icon
Date/Time9/29/2012 at 1:50:05 PM

What Trevor said. Tiling is pretty easy, the major thing is to make sure your prep is excellent.

Good luck!

User Icon
John from JALS Corporation in Welland
Date/Time9/29/2012 at 1:58:58 PM

It all depends on how out of level your concrete floor is my suggestion would be to ask the supplier from whom you are purchasing the tile from for the right floor leveling products.

User Icon
Date/Time9/29/2012 at 2:59:35 PM

Trevor has it all right in his answer.

I've used levelling compound quite a few times and have found that after the first couple of times reading and following the instructions word for word, I now go on instinct and have never had a problem.

Good luck to you.


User Icon
Date/Time9/29/2012 at 2:59:36 PM

Trevor has it all right in his answer.

I've used levelling compound quite a few times and have found that after the first couple of times reading and following the instructions word for word, I now go on instinct and have never had a problem.

Good luck to you.


User Icon
Jacques from Stellium Renovations in Montreal
Date/Time9/29/2012 at 5:28:25 PM

The advice of the other respondents is spot on. One thing to remember however is that this stuff, when mixed properly, is made to FLOW. That means that it will seep out of any opening, crack, fissure available. I suggest that you should pay attention to contain the product to the desired area by blocking any path of escape (think swimming pool). Cracks in the cement, gaps between studs or other openings should be addressed before you mix and pour.

Another thing is that it sometimes needs a helping hand to get into corners and such, so a finishing trowel can assist you to place the material there as well.

Finally, if the self-levelling compound does not reach every wall, in the case of a partial coverage installation, it would be helpful to feather the edge so as to avoid a "drop-off" or built-up edge. This makes raking out your tile mortar way easier. Hope this helps.

Good luck with your project.

Levelling the floor in downstairs bathroom before tiling
User Icon
Date/Time9/29/2012 at 5:53:24 PM

Clean the existing concrete properly first.

I use a mixture of muiriatic acid mixed with water. Two parts water, one part muiriatic.

Where rubber gloves and wear a breather mask. The one Lowes, depot or Rona has with the filter on it.

Mix the self leveling product exactly as the manufacturer sets out on the bag.

Start applying with a wide trawel at the back wall of the room and work your way to the door. If you apply it as described, and at a reasonable pace, the floor will be level when finished.

Please note: If you floor is way out of level, you will want to apply painters tape along all the walls so the material does not fill the cavities below the drywall.

If the threshold to the room is the low spot, you will want to tape down a piece of wood or other material to let the cement form up to the location you would install a threshold when working on your tile later.

Hope this helps.

User Icon
Spencer from All Home Repair in St Thomas
Date/Time10/5/2012 at 9:22:03 AM

As the other respondents have said first prep as described by them.

I would add to what has been said a word about your use and general condition of the floor.

If there is a point where the floor makes a big drop then a different approach might work better.Also,if your are covering the floor with carpet or floating laminate.In this case a more local leveling job might be all that is needed.Just use a straight edge to determine the distance that would need leveling,make your mix a little thicker.and spread with a trowel.Out lie the area with a marker.As you put on the leveler use the straight edge as a screed then trowel .

Good luck


Search the TrustedPros directory and discover the best contractors in your area.

Find your home service pro
Great renovations start with a great contractor.

Since 2004, TrustedPros has been helping homeowners find the right contractor for their home improvements and repairs.

Post Your Project

Within hours you'll be comparing offers from top-rated professionals. It's free to post and you're under no obligation to hire.

Trustedpros Inc. does not warrant the accuracy, completeness, safety, legality or usefulness of any Content, or Whether Content is Current and up-to-date, and TrustedPros Inc. Shall have no liability whatsoever with respect to your use or reliance upon any content or for content being removed or otherwise ceasing to be available. Please refer to the terms and conditions of use of this websites for more details.

It appears you may be located in the US

TrustedPros is designed to deliver results targeted to your location.

Get Free Estimates

Post your project and compare offers from top-rated pros.