Causes and Effects of Hollow Tiles

The author of this blog is Venu, a trained and certified home inspector working at HomeInspeKtor. You can get in touch with him here.

What is hollowness in tile?

It’s a hollow sound that we hear when tapped with a specialised mallet thereby showing that the tile or a portion of the tile is not laid or bonded properly or that there is a space/void under that portion. 

Home Inspection - Hollow tiles check
Hollow Tiles
  • What are the reasons behind it?

    • Poor Quality of materials like screed, mortar, adhesive and/or the tile itself during the tile installation.
    • Poor workmanship (the way the tile is laid or mortar & slurry is prepared, or adhesive is used and so on) and lack of supervision.
    • Uneven subfloor or improper cleaning of subfloor, before the installation of tiles, due to which uniform adhesive bonding layer is not formed.
    • For large or oversized tiles, it is important to take extra caution while installation about tile bonding using hard wooden objects. If it is not done properly, chances of hollow sound or tile popping-up are more.
    • If the flooring is directly exposed to the sunlight, and if the adhesive/bonding layer is not firm, there may be chances of debonding due to expansion of tiles. This may result in tile pop-up or buckling of 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.
    • Replacing a damaged tile (due to hollowness) may result in shade variations.
    • Also, rework involves more money when compared to new work.

Hence, it is important to get the tile laying right, in the first instance itself or get it addressed even before settling into the home.

Hope you enjoyed reading this blog about home inspections written by the best home inspection company in Bangalore – HomeInspeKtor and get to know about all the issues such as seepage, electrical faults, hollow tiles etc found in a new home. 

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