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555 Level Pro 40 lb. Self-Leveling Underlayment

  • Can be walked on in just 2 hours
  • Easy to use - mix with water, pour, and spread
  • Smooths and flattens interior surfaces
  • See More Details

Frequently Bought Together


Product Overview

The Henry Level Pro 40 lb. Self-Leveling Underlayment is an easy-to-use, cement-based underlayment that self-levels. Just mix it with water, pour and spread. The underlayment is excellent for smoothing and flattening interior surfaces before installing floor coverings. Use over concrete, wood, tile, terrazzo and cut back adhesive.
  • Must use Henry primer 554
  • Covers 43 sq. ft. at 1/8 in. thick
  • Antimicrobial
  • Install ceramic tile in 6 hours
  • Walk on in 2 hours

Info & Guides

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Flooring Material FeaturesCrack resistant,Fast-drying,Rapid settingAntimicrobialAttached vapor barrier,Crack resistant,Fast-drying,Moisture resistant,Mold/mildew resistant,No mixing required,Premixed,Rapid setting,Waterproof,Waterproofing membrane
Flooring Product TypePatching/RepairPatching/RepairPatching/Repair
View ProductView ProductView Product



Product Width (in.)


Color Family
Commercial / Residential
Commercial / Residential
Flooring Material Features
Flooring Product Type
Product Form
Dry Compound/Powder
Product Weight (lb.)
Recommended Surfaces

Warranty / Certifications

Manufacturer Warranty
10 Year Limited

Questions & Answers


can I use this product over terracotta tile (6x6 clay tile)?

Asked by andrew April 25, 2021

Yes,just clean the tile and let it dry,then use the primer as directed and it will bond nicely.

Can this be applied over Hardie Backer?

Asked by Alex April 21, 2021

Yes,this will bond well if used with the primer,but if this is for a tub/shower then the mortar itself should be sufficient if the backer board was installed properly.

can i use this in a dirt floor basement ?

Asked by kev April 9, 2021

No. Such a floor will probably sink or heave a bit and it would crack the LevelPro. You need to pour a 3-1/2" layer of concrete, preferably with rebar along with appropriate weather barrier and maybe foam insulation.

Can i nail down hardwood flooring over this leveler?

Asked by James April 9, 2021

NO. The Level Pro would crack should you drive nails into it. Adhesive is the only way to go on wood flooring over this product.

Can this be tinted?

Asked by CR March 28, 2021

Doubt this could be tinted. It dries a very deep olive green color. Can't imagine any tint would overcome that dark color. Besides, Level Pro should NOT be your primary walking surface, as it would begin to crumble under heavy traffic. Level Pro is meant as an underlayment and that more durable surfaces like tile, wood or linoleum are meant to hold up to foot traffic.

Can glue down plank wood flooring go down on this product

Asked by Kc March 28, 2021

Yes,but I suggest using 554 Level Pro. Underlayment Primer first.

Whats the ratio of water to mix? I only need to make a small batch.

Asked by Mike March 14, 2021

The instruction state Add ONE 40 lb. bag to 5 quarts of water. Hence, each QUART mixes with 8 lbs. of HENRY 555. Or, each pint mixes with 4 lbs. of HENRY 555.

Can this product by used over pine plank flooring

Asked by Ed March 13, 2021

Yes, as long as it's tongue and groove and VERY solid. You can not afford to have any play in the subflooring or else the Level Pro will eventually crack.

Can you use on a plywood floor

Asked by Pat February 11, 2021

We used it on plywood, worked great. Just need to paint on the primer first and let that dry. The bag will say what primer to use. It's a pink liquid. You'll find it by the self leveling bags. If you have to do another layer of leveler then you have to prime again.

Can i use this over pex tubing for radiant floor heat?

Asked by Christopher February 10, 2021

That should not be a problem. However, LevelPro is recommended to be used in layers from 1/8" to 1" thick. I would guess you need to pour a 1-1/2" thick layer to cover your Pex heating tubes. You might have a little settling in a pour that thick. Hence, you might have to pour a thin top layer once the first layer has dried. Make sure you use their 50:50 primer mix between coats.

555 Level Pro 40 lb. Self-Leveling Underlayment - page 2

Customer Reviews

  • 4.1
    out of 300 reviews
  • 76% recommend this product
Filter by:
Showing 1-10 of 300 reviews
Not completely level but smooth!
Tore up basement carpet and found weird patch work around the perimeter of the concrete floor. There were also low spots here and there. I scraped for weeks and used several products to try to get the old carpet glue up but in the end we decided to pour over it. We did prime with the Henry primer suggested. We (2 of us) used 5 bags. We definitely could’ve used 6. We even bought the 5th bag as our extra. Buy an extra 2 bags just incase, return if you dont use it. My boyfriend mixed and I poured and squeegeed it around to help it flow. It set up WAY quicker than 10 minutes, I’d say about 5 and we used freezing water so we’d have as long as possible. We let it dry for 24 hours. It is insanely smooth! Unfortunately it didn’t level itself. I suggest using more water so it runs better. We still have low spots to fill, but our major issue was the perimeter which is smooth and level now! I’m not sure why some places it worked and some didn’t. We were extremely consistant with our water, mixing, and pouring. We’re so glad we did it. Once we fill these lower spots we can lay our luxury vinyl!
by Rileyrue22
1 person found this helpful
Great product. Very easy to use if follow instructions. Perfectly leveled an uneven area on my ba...
Great product. Very easy to use if follow instructions. Perfectly leveled an uneven area on my basement floor, so I could put ceramic tiles floor.
by charrua13
2 people found this helpful
Very easy to use, I used the primer as well and had no issues with bubbles or layers.
Very easy to use, I used the primer as well and had no issues with bubbles or layers.
by Jaywow
This works perfectly.... However, don't make the same mistake as I. The first bag cracked and s...
This works perfectly.... However, don't make the same mistake as I. The first bag cracked and split all over the place. Then I figured the old hardwood was so dry that it was sucking the water out of the mix. So, I put down two layers of 3mil plastic. It shrunk up like an old wilted flower and cracked something terrible. I then decided to follow the directions (what a novel idea, right?). So, I paid the $10 for the Henry 554 primer and bought $4 worth of galvanized chicken wire. Mixed the Henry 555 for the third time, and the result was a perfectly smooth and level floor. Who would of thought a $10 bottle of primer and $4 worth of 1/4" chicken wire would make all the difference in the world? Easy to use, easy to mix, good stuff, JUST FOLLOW THE DIRECTIONS!!!!!
by BeemerBoy88
32 people found this helpful
Don't Use over Vinyl Flooring!
Our kitchen floor has three different coverings on it--bare subfloor, places where the homeowner tried to level it years ago, and sheet vinyl. There was nothing on the bags or these reviews that said "don't use over vinyl" so we just primed and used the LevelPro over everything. Where it was wood or even the existing self-leveler, it worked GREAT. Where it was over vinyl we got huge bubbling and warping. We have to break it up and pull it up, including the vinyl, and do it over. But we WILL do it over using the same product because it works like it's supposed to when you use it over wood. For 160 square feet of kitchen we ended up using 12 bags and 4 people. It went very quickly.
by ruddtwo
11 people found this helpful
For best chance of success, come prepared
Used three bags of this to try to level my 123 sq ft home office. Depending on project size, be sure you have enough man power to get this properly mixed, poured, and spread. My father and I did not have any additional help. Either we didn't mix it long enough or we didn't use enough water. Some tips online suggest to add the powder to the water a little at a time as you mix it. Had we had another person to do this and hold the bucket (It spun out of control and flung product all over my bathroom - but I will say it wipes up easily), I think it would have mixed better. The 10 minute set up time makes it ridiculous to try to mix and apply. The good thing is that you can pour one section, let set up, prime the adjacent edge and pour another section. I think we would have been better off had we done this also. Also .... Frog Painters Tape is not a good tape to use to cover seams/holes. We had areas pucker up and crack the product. Might be a better practice to caulk the holes or seams before priming.
by NJSchneck
20 people found this helpful
Henry's Self leveling Underlayment
Easy to use instructions, product as described, and years of uneven floors are behind me. Fabulous product, and very very durable.
by scanman
1 person found this helpful
Excellant self leveling cement
After looking at the reviews over the other popular product, this had lesser poor reviews so I gave this a try. I also bought the Henry 554 and applied over 360 sqft of space. Poured a total of 10 bags of Henry 555. Using a 10 gallon plastic garbage can, Here's how I went about it after watching the video several times. The interior temperature was about 65F and the floor temperature was about 60F in the basement I mixed a small quantity to even out the recessed crevices at the base and waited for it to dry. Having certain I'll be able to mix the Henry 555 without any unmixed cement stuck in the crevices, I proceeded to mix 2 bags with 10 qts of water. I used the metal paddle from HD and a 1/2 inch corded drill and mixed everything until it was consistent. It didn't need 2-3 minutes as they recommended, probably about 1.5 minutes. I poured half of the mixture and rolled it with a 20" wide spiked roller that I purchased online. It was extremely useful as the anti splash also worked as a gaged spreader while the spikes on the roller took care of the surface tension to allow the mixture to flow evenly and feather the edges between pours.
by JP
55 people found this helpful
Easy To Use but not meant for Asbestos Tile Floors
I bought this product to go over a worn out asbestos tile from the 1950's. This stuff is easy to mix and apply and did an amazing job leveling out my floor. The problem was it started to peal up the next day. I called the company's tech support department and they confirmed that their product is not designed to work on asbestos tile. Even if I had used their primer product (which I didn't) it still wouldn't work according to Tech Support t wish their bag and or web site said this product can't be used on Asbestos. The downside is I bought and applied over 7 bags of this stuff. And granted now I can't get my money back. If I had a concrete or wood subfloor to level I would surely use this product.
by SecretAgentAbe
45 people found this helpful
worked well
replaced particle board with plywood in my kitchen, had a dip in the floor. used 555 to fill in tthe floor. pulled and push it with the back side of a garden rake, levealed well. would use it again. well worth the money.
by Greg
25 people found this helpful
Showing 1-10 of 300 reviews