Knowledge Builders

why does my ceramic tile sound hollow

by Prof. Noel Upton III Published 3 years ago Updated 2 years ago
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If the tile is well bonded (i.e. attached to the concrete substrate), it will have a high-pitched sound. If you hear a lower-pitched or a hollow sound, this can indicate that tiles have debonded, or were never bonded, somewhere within the tile assembly.

Full Answer

Why does my bathroom tile sound hollow?

Membranes will normally cause a hollow sound. If only a portion of a tile is hollow sounding or only certain tiles are hollow sounding it could be that there is a void under the tile or that the tile is not bonded in those spots for some reason.

Do ceramic tiles sound hollow?

This is very unlikely if your tiles are sounding hollow after they have been laid. The average thickness of the ceramic tile is between 3/8″ to 1/2″, so they are not usually too thin unless installed with an adhesive that has sunken over time.

Why does my floor sound hollow when I walk on it?

There are several causes for the hollow sound that you hear when you walk across your tiled floors. Most times it’s caused by a problem with the subfloor, whether it be an air pocket under the tile or just dirt and grime. Other reasons include uneven tiles or damaged grout.

Does a hollow floor mean my tile will crack?

Please visit the TCA Team for information on these types of services. If the floor sounds hollow, does it mean my tile will crack? Occasionally, a floor will sound hollow even when the tile is well bonded.

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How do you fix hollow sounding tiles?

There is no way to repair the hollow tiles so they are not hollow any longer other than replace them.

What causes hollowness in tiles?

Causes of hollowness Mixing too much of water in mortar mix used below the tiles, leading to evaporation and leaving voids on drying up. In large rooms/areas laying the tiles wall to wall without leaving gap for thermal expansion and contraction in the ends, leading to popping up of tiles when the space contracts.

Will hollow sounding tiles crack?

Perhaps the tiles are still partially attached at the corners or somewhere in the middle, but it's just a matter of time before a hollow tile begins to crack. Depending on what's happening underneath the flooring, these kinds of problems may be caused by, among other things, structure settlement or weak underlayment.

How serious is hollow tiles?

After-effects of hollow tiles: Voids under tile can weaken the tile, thereby may cause breakage. When the adhesive under the tile does not cover the entire surface, there may be void underneath, and when pressure is applied on such tiles may lead to tile cracking or damage.

Do I need to replace hollow tiles?

ANSWER - Hollow sounding tile is not a defect per industry standards. Although a hollow sounding tile can be a symptom of a defect. If all of the floor sounds hollow or a portion of the floor sounds hollow, then it might be due to the materials and configuration of the tile assembly below.

Why does my tile floor make noise?

The noises could be an indication that you have too much deflection in the floor and that the tile bond coat is not bonded as well as it should be. The grout coming out is an indication that the floor is not structurally stable enough and has excessive deflection.

How can you tell if a tile is hollow?

We started off checking for hollow tiles. This problem exists due to incorrect installation and you'd want to fix it because a hollow tile may mean it is less stable and more prone to popping over time. Simply use a coin or metal rod to detect for inconsistent sounds when you knock lightly against your tiles.

How do you check if tiles are laid properly?

6 Ways to Check Tiling Work Without a HeadacheObserve with your eyes. ... Use coins to measure equality. ... Rub with your hand or walk with your feet to test for flatness. ... Test by listening. ... Test the floor level using a crystal ball. ... Testing the slope by pouring water.

What causes drummy tiles?

Insufficient mixing, incorrect ratio of adhesive powder to water and allowing the adhesive to 'skin' or dry out too much before laying tiles on it are key causes leading to drummy tiles.

Do tiles make noise?

Your Tile will beep 5 times like a "chirp" when you quickly double-press the button on your Tile if: Your Tile is out of range of your device. Bluetooth is not enabled. (iOS only) The app is closed on your device.

What is a hollow sound?

a hollow sound is a low sound like something empty being hit. Synonyms and related words. Describing sounds that are low and/or deep.

Why does my concrete floor sound hollow?

Hollow sounds indicate the top surface of the floor has separated from the underlying concrete. “Sounding” by either tapping with a hammer or dragging a heavy chain and listening to the resulting sound are the easiest and primary means to detect and map delaminated floors.

What causes drummy tiles?

Insufficient mixing, incorrect ratio of adhesive powder to water and allowing the adhesive to 'skin' or dry out too much before laying tiles on it are key causes leading to drummy tiles.

How do you check if tiles are laid properly?

6 Ways to Check Tiling Work Without a HeadacheObserve with your eyes. ... Use coins to measure equality. ... Rub with your hand or walk with your feet to test for flatness. ... Test by listening. ... Test the floor level using a crystal ball. ... Testing the slope by pouring water.

How do you fill gaps under floor tiles?

White cement is great for filling cracks and gaps if used properly. You can use it to fill the gaps in marble flooring, vitrified tiles, and ceramic tiles. Moreover, you can mix the white cement with color pigments if you want to match the tile color by creating a single floor piece slab illusion.

How do you fix shaky tiles?

0:328:38How To Repair a Loose Tile - Fix A Floor - YouTubeYouTubeStart of suggested clipEnd of suggested clipAnd what you're supposed to do is drill in between the grout lines. And then insert the tip and useMoreAnd what you're supposed to do is drill in between the grout lines. And then insert the tip and use a caulking gun. And put the glue inside let it fill the space underneath the tile.

Why does a tile floor sound hollow?

If the entire tile floor sounds hollow, then it is likely because of the underlying conditions. A tile floor over a wood subfloor will sound more like a hollow sound compared to a tile floor installed directly to a concrete slab.

What does it mean when a tile sounds hollow?

If a portion of a tile sounds hollow and other portions of the same tile sound solid, then it is likely that there is a void under that portion of the tile.

Why does concrete sound hollow?

Some portions of a concrete slab can sound hollow due to conduit trenches or other conditions, which then the tile attached to it will sound hollow .

How many square inches of voids should be in a tile panel?

The standards for stone tile and porcelain tile panels say that there should be no voids more than 2 square inches, which is about the size of a golf ball.

How thick should a thin set tile be?

There are new industry standards that limit the thickness of the thin-set to not be more than 1/2″ thick after embedment if you use a Large and Heavy Tile Thin-set formally referred to as medium bed thin-set. The ANSI A118 standards state that you can’t use the thin-set to adjust the floors to compensate for substrates that are not adequately flat.

What happens if tile isn't cracked?

If the tile and grout isn’t cracked then the floor is performing correctly so far.

Why do tiles pop?

Normally when you hear tiles pop, it indicates the tiles were under compression stress because they have expanded and there were no or not adequate movement joints installed to mitigate the anticipated stresses. Tiles do expand from heat and moisture.

Hollow Sounding Tiles – Causes And Fixes

Do you have tiles in your home that have a hollow sound every time you step on them? If so, don’t worry – you’re not alone. In this post, we’ll show you how to fix the issue and make your tiles sound solid once again. Keep reading to learn more.

What Causes Tiles To Sound Hollow?

There are several causes for the hollow sound that you hear when you walk across your tiled floors. Most times it’s caused by a problem with the subfloor, whether it be an air pocket under the tile or just dirt and grime. Other reasons include uneven tiles or damaged grout.

Fix Hollow Sounding Tiles – Try These Methods First

If your tiles are only making the sound on certain parts of your floors, it could be due to any number of issues including uneven tile or broken grout. Try these solutions to fix them:

Fixing Hollow Tiles – More Complex Methods

There are several other ways that you can fix your hollow-sounding tiles. If you still think that the issue is coming from under the tile, here are a few ways to go about it:

How do I fix my broken tiles?

If it’s the actual tile that’s causing a hollow sound when you walk on them, then you’ll need to replace them. If only a few tiles in your flooring are breaking, then they can simply be removed and replaced with new tiles. If there are a lot of broken ones, though, then your best bet is to remove the entire floor and replace it.

How do I fix my uneven tiles?

If you have uneven tiles on your floors, then you’ll need to first determine if they were installed that way or if they’ve moved since being laid. Most tiles are cut to be 1/8″ wider or bigger than their original size, so it’s possible that they were installed that way.

The Bottom Line

Most hollow tiles will have a hollow sound when you step on them. This can be due to your tiles being too thin, or there may be some type of issue with the grout between them. Your best bet is to go through the list above and try and determine what type of problem you’re dealing with, whether it’s lippage or damage to your tiles themselves.

Why does my tile floor sound hollow?

Occasionally, a floor will sound hollow even when the tile is well bonded. This can occur when a mortar bed method is used and the mortar has delaminated from the supporting layer or when the subfloor itself is not sufficiently thick or well attached. Other systems that intentionally separate the tile layer from the substrate (such as the mortar bed with a cleavage membrane system like TCNA Handbook detail F111) should be closely examined to ascertain if hollow sounds necessarily imply that the tile is not bonded.

What is thinset tile?

In the thinset installation, a crack isolation/anti-fracture membrane is bonded to the concrete. Tile is bonded (with thinset) to the surface of the membrane. The internal make-up of this membrane is such that movement in the concrete is not directly transferred to the tile. The membrane compensates where needed to prevent or reduce force transference.

What happens if you lose bond to subfloor?

Losing bond to the subfloor has the potential to lead to cracking in the tile layer: Expansion and contraction, especially if movement joints were not placed sufficiently in the tile layer. Note: for outdoor, indoor but sunny, or moist installations, this is especially important.

What is reflective cracking?

Should cracks occur in the concrete, these cracks will "reflect" through the tile - this is often called "reflective cracking.". Similarly, if tile is installed over a control joint (The Tile Council of North America does not recommend this), movement in the control joint will cause a crack in the tile. Even small shrinkage cracks in concrete can ...

Can concrete cracks be dimensionally active?

Even small shrinkage cracks in concrete can be dimensionally active where continued curing of the slab will cause these cracks to expand or propagat. If this occurs, the cracks will show through the tile. This type of cracking can be easily avoided - either by installing the tile on a mortar bed set over a cleavage membrane (for example, ...

Can you inject epoxy to rebond tile?

Some contractors have tried to inject epoxy to rebond tile without reinstalling it. While this may work in a small area, it is not practical over a large area. Further, any repair that does not address the cause of the failure may not last very long.

Can you have hollow spots on tile?

While a tile floor with hollow spots is not ideal, it does not necessarily mean that floor failure is im minent. On the contrary, over concrete, if there is no deflection in the floor; grout and gravity will help keep the floor in place (as long as there are sufficient movement joints in the tile and minimal shear forces).

Why does my tile make a hollow sound?

Hollow sounds produced by tapping tiles can also be a result of an improper installation method called spot-bonding. Spot-bonding is when an installer applies “spots” of adhesive on each corner of a tile and one in the center, and then presses it into place. This leaves voids under the tile, and ultimately throughout the entire installation, which can lead to big problems. When this method has been used you’ll hear the hollow sound where there is no adhesive (the voids) and you’ll hear solid sounds where the tile is spot-bonded.

What causes tile to debond?

Other factors that contribute to debonding are excessive floor or wall deflection (vertical movement) and the lack of movement joints (expansion joints). This can result in tile tenting to release pressure from the tile assembly.

How to determine if tiles have debonded?

By extracting pieces of tile and substrate (s) you can determine what’s different in the assemblies of the hollow vs. solid sounding tiles and, determine whether individual defective tiles can be simply repaired or if the entire installation needs to be replaced.

How to ensure that you don't end up with tile and stone installation problems?

The best way to ensure that you don’t end up with tile and stone installation problems is to verify that installers are following industry standards. The Certified Tile Installer program through CTEF and the Advanced Certifications for Tile Setters (ACT) program validate basic – and in the case of ACT – advanced skills possessed by the tile setter. Visit www.ceramictilefoundation.org for more information.

What is UofCTS in tile?

The University of Ceramic Tile and Stone (UofCTS) offers a convenient and practical online education course for tile installers (setters and helpers) to learn the current industry thin-set and substrate preparation standards. Visit www.CTaSC.com for more information.

Why is spot bonding bad?

Spot-bonding also reduces the bond strength of the tile and its attachment to the substrate, making it more susceptible to stress and causing debonding under certain conditions. Voids that occur with spot-bonding become pockets for water and moisture to collect, which could lead to efflorescence and other moisture-related problems. The lack of support beneath the voids also make the tile more vulnerable to damage from live loads such as falling heavy objects, heavy equipment, rolling vehicles, loaded dollies, carts, etc.

What does it mean when tile is bonded?

If the tile is well bonded (i.e. attached to the concrete substrate), it will have a high-pitched sound. If you hear a lower-pitched or a hollow sound, this can indicate that tiles have debonded, or were never bonded, somewhere within the tile assembly. Large tile areas can be sounded with a chain.

Why does my tile sound hollow?

The hollow sound is due to the thinset breaking down. It is a tile application problem, not a slab foundation problem. When the foundation distorts, the tiles will break or fracture, but the tiles will remain tightly bonded to the foundation surface. What is thinset?

Do floor tiles sound hollow?

I frequently get calls from homeowners who have found that some of their floor tiles sound hollow when tapped on with a metal instrument like a screwdriver or a pocket knife. The short answer is: no, hollow sounding tiles is not an indicator of a foundation issue.

Why does my tile make a hollow sound?

Membranes will normally cause a hollow sound. If only a portion of a tile is hollow sounding or only certain tiles are hollow sounding it could be that there is a void under the tile or that the tile is not bonded in those spots for some reason.

Why does my tile floor sound hollow?

If all of the floor sounds hollow or a portion of the floor sounds hollow, then it might be due to the materials and configuration of the tile assembly below. Membranes will normally cause a hollow sound.

Why are my tile floors cracking?

If in fact the tiles are not bonded then they will be more prone to cracking if they are subjected to a concentrate load of some sort. Such as running a dolly with heavy equipment over the hollow tile or dropping something heave on it.

What does "drummy" mean in tile?

Drummy is another word for sounding hollow. If the tiles are hollow sounding, moving and the grout is coming out then I would assume the tiles are not adequately bonded and need to be replaced.

Why did my tile not resist?

In the later case, then perhaps a year later the tiles were subjected to some stress and those tiles were not able to resist it due to the diminished bond strength .   Lack of movement joints could be a reason the tiles were subjected to stress.

What does hollow sound mean when you remove tile?

If upon removing the tile it is found not to be bonded, then the defect is the bond failure, and the hollow sound was a symptom of that defect.

Why are tiles not able to resist stress?

In the later case, then perhaps a year later the tiles were subjected to some stress and those tiles were not able to resist it due to the diminished bond strength . Lack of movement joints could be a reason the tiles were subjected to stress.

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1.Hollow Sounding Tiles | Tile and Stone Consultants

Url:https://tileandstoneconsultants.com/blog-detail/Why-Does-My-Floor-Tile-Sound-Hollow

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Url:https://www.tcnatile.com/faqs/50-hollow-sounding-tile.html

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