How Much Thickness Does Thinset Add to Tile Height? Here’s the Answer!

The majority of tiles require 3-inch thick layer of the mortar underneath the tile.

A mortar layer that is 3/16 inch thick is achieved by spreading mortar using an 3/8-inch by 3/8″ square-notched trowel.

This is the ideal thickness for the majority of tile installations. But, occasionally, a thicker coating of mortar may be needed.

The most common size of trowel for all these kinds of installations is the 1/4-inch by 1/4 inch square-toothed trowel.

This trowel leaves one thin layer 1/8 one-inch thick under the tiles.

How to Calculate Thinset Thickness the Right Way


The thickness of the thinset layer will be contingent on the trowel you are using to distribute it. If you choose to use trowels fitted with square teeth evenly spaced, your thinset layer will measure one-half of the thickness of the tooth.

That means the 3/8 x 3/8″ trowel with a square notch distributes thinset into ridges that are 3/8-inch tall and spaced 3/8-inch apart.

Once a tile has been pressurized to the thinset, it expands to fill in the gaps between the ridges. This results with a thick layer about 3/16ths inches thick.

  • A trowel that is square-notched with tooth spacing equal to as the depth of the tooth creates the thinset layer, which is one-half of the tooth’s depth.
  • The 3/8-by-3/8″ square notch trowel, like this one, creates a 3/16″ thick layer of thinset.
  • Its 1/4 ” X 1/4″ trowel creates thinset layers 1/8-inch thick.
  • U-shaped trowels create a thinset layer of one-third the tooth’s depth.

Thinsetthickness 300x200

If you’re using a trowel that has dental facets that are U-shaped, you will produce a thinset layer about one-third of the thickness of the depth of the tooth.

Therefore, this trowel that has 3/8-inch U-shaped tooth will result in one-quarter-inch thinset thick. These easy rules can assist you in calculating thickness of the thinset for any tile task.

Is It Possible to Use Too Much Thinset on Tile?

A large amount of thinset could create an uneven surface. It can also cause the tiles will ooze and cause a weak connection between tiles and the substrate.

Apply just enough thinset mortar to create a strong connection to the rear of your tile as well as the floor underneath. In the majority of installations the thinset layer 3/16 – to 1/8-inch thick is adequate.

How Thick is Tile Plus Mortar?

Thinset cement dryset mortar and drybond mortar are synonyms. This kind of cement is made to be able to adhere to a thin layer, generally, not more than 3/16th of an inch.

For instance an 3/8″ trowel that is notch-shaped will give three-quarters inches thick layer after the tiles are applied on top of the cement.

Thickening of Tiles One-inch, small mosaic tiles could even be 1/8 inches thin. Medium, 6-by-6-inch and 12-by-12 inch tiles are generally 3/8 inches in thickness. For large-format tiles like 18-by-18-inches and 24-by-24-inch can be as high as 1/2 inch in thickness.

Also How thick is Thinset for 12×24 tiles? If you require a minimum 1/8″ bed of thinset mortar beneath the tile which is cupped by 1/8″ the tile, you should employ a trowel that leaves an inch or 1/4″ layer of thinset under the completed installation.

A 1/2″ trowel that is square-notched will give the required coverage in this case.

In the same way to that, how thick should the mortar bed need to be?

For residential floors For residential floors, for residential floors, a the thickness of the mortar bed at 3/4” should be sufficient. For commercial floors with light duty 1-1/4 inch thickness may be recommended.

If you were to choose a higher-quality flooring was suggested, the appropriate reinforcement might be 2”x2 16/16 wire positioned within the center of the bed to give it more porcelain floor tile durability.

How thick is the average ceramic tile?

When it comes to the size size and size and thickness of ceramic tile is different. floor tile typically ranges from 1/2 up to 3/8 inch in thickness and can be made in 4×4 inches to up the size of 24 by 24 inches.

The majority of ceramic tiles are 12 by 12 inches however, smaller tiles like mosaics on mesh may be just 1/8″ thick, and extend all the way to 3/8.

Is Thicker Tile Better?

Tiles that are thicker tend to be less likely crack or break than the thinner tiles because they’re more durable. You might want to consider more robust tiles. tile to use as flooring particularly in areas with high traffic, since porcelain flooring tiles’ durability is essential to prevent damage and cracks.

What Happens if Thinset is Too Thick?

The most probable dangers of applying it excessively is cracks (see picture) or delamination. Also, lippage.

Be aware it is that the thinset that is shown as an image in the preceding images is specifically designed for use on plywood (an A118 ANSI. 11 mortar). In case you attempt to accomplish it using an El-cheapo thinset Good luck.

Is Cement Board Really Necessary for Tile?

Shortly, tiles and grout aren’t waterproof by nature. Backerboard made of cement is commonly used an tiles base for plywood or OSB subfloors.

Backerboard made of cement placed on concrete for use as an underlayment or subfloor is not usually recommended or required. In most instances you can put tiles directly onto the concrete.

How Thick is Cement Board for Tile?

Cement backer board is available with two different thicknesses of 1/2 inches and 1/4 inches. The most common practice is to use 1/2 inch- wide backing board for the wall tiles installations, for example, tub surrounds.

Do You Require Thinset Under the Cement Board?

As you are installing hardie board on boards that have small gaps, I wouldn’t suggest putting on thinset underneath it. It could create a massive mess beneath the home (or whatever else is underneath the bathroom). It can also cause uneven floors since it is difficult to even out thinset which is divided by gaps.

What is Underlayment for Tile?

Exterior plywood is a good subfloor for tiles which is preferable over interior-grade plywoods due to the adhesives used to bond the wood are water-resistant.

If water leaks through it from the tiles installation and reaches underlayment underlayment but does not make the timber shrink unlike interior grade plywood.

Whatisunderlaymetfortile 300x200

What is Grade 5 Porcelain Tile?

The most durable ceramic tile available, Grade 5 tiles are commonly used in areas that experience heavy foot traffic and are susceptible to a lot of wear and wear and tear.

They are a popular choice for installations in hospitals, schools as well as grocery stores as well as industrial buildings. Tiles of Grade 5 are able to withstand tough chemicals too.

What is the highest kind in Porcelain Tile?

  • Tiles of Grade 1 are among the most fragile tiles and have the greatest potential as wall tiles.
  • Grade 2 tiles should be for areas with a low traffic, such as in residential bathrooms.
  • Grade 3 tiles can handle some extra traffic which is why it’s the commonly used option for residential use.

How Much Does Thinset Add to Height?

I apply the size of 3/8″x3/8″ for any tiles that is larger than 12×12. Its thickness thinset is determined by the size of the notches on your trowel.

For the tile size that you have mentioned 300 x 300 millimeters I would guess that the recommended trowel size is 12 millimeter notches. Theoretically, this could increase the floor’s high to 6 millimeters and the tiles thickness.

What is Double Loaded Porcelain Tile?

Double loaded, full bodied and colour-bodied porcelain tiles are the kind of tile where the color and pattern extends all the way to the biscuit. It is only one colour running starting from the surface and ending at the bottom in the base. Tiles that are double loaded are created by pressing two clay layers.

Hopefully now you know everything you need about installing tile, terms thinset cement, cement thinset mortar dryset, bed of thinset beneath, wall tile installations, and tile installation in general.

Choose thicker porcelain tiles for an uneven cement floor.

Leave a Comment

Your email address will not be published.

Scroll to Top