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Inspection FAQs

Floor Tile Issues

Floor Tile Problems

Floor Tiles

Problems with floor tiling are identified during a Building Inspection by sounding the tiles with a tapper and by visual inspection.

Drumminess and loose and broken tiles

If the tiles are loose or have an airspace beneath them, they sound drummy or hollow when sounded with a tapper or sounding device. This drumminess is an indication that the tile or tiles have lost adhesion with the substrate.

If not addressed this loss of adhesion or looseness can lead to brakeage of the tile or the tile becoming a trip hazard. This problem is typically caused by one or more of the following:

  • The surface on which the tiles were laid was not properly prepared. Surfaces such as a concrete slabs should be clean and free from dust grease and paint. It is also good practice to treat surfaces with products designed to improve adhesion.
  • Insufficient control joints were provided to allow the tiles to expand and contract with changes in temperature at a different rate to the surface on which they are laid.
  • The adhesive use was inappropriate for the tile and substrate combination.
  • Ravages of time.
  • Impacts and overloading by heavy objects.

Irregular grout lines or gaps between tiles

This problem is more cosmetic that practical however a reasonable standard of workmanship should give regular grout lines. If tiles are manufactured with irregular edges or are not of a uniform size. Grouting gap irregularities are unavoidable.

Lips Between Tiles

When a tile is a little higher that the tile laid next to it a lip is created which is both unsightly and a potential trip hazard. This issue is usually caused by a combination of the following.

  • Large tiles laid on a surface that is not level.
  • Uneven substrate surfaces
  • Poor laying with varying adhesive thicknesses
  • Not using a levelling system when the tiles are laid especially with larger tiles.

Laying tips

Prepare the surface by cleaning and removing material such as paint that may become separated from the substrate with the passage of time. It may also be necessary to grind some surfaces that are heavily contaminated.

Concrete floors may require levelling using levelling compound and grinding prior to tiling. Discuss the requirement with your tiler. The size and type of tile affect how much levelling is required.

Remove skirting boards and finish the tiles 10 mm from the wall base to allow for differential thermal expansion and contraction between the tiles and the material on which they are laid. The skirting board are replaced or reinstalled over this gap at the end of tiling and sealed with a flexible silicon sealant.

Allow delivered tiles to achieve ambient temperature before laying

Install control joints where large areas such as living room join smaller areas such as hallways. It may also be necessary to install control joints where tiling span more than 6 meter in a single room or area.

When tiling on a timber floor stabilise the floor using a suitable underlay. High density fibre cement sheeting is often used for this purpose.

Bathrooms

Special consideration must be given to floor tiling in bathrooms. The two big differences are achieving the necessary fall or slope towards drains in shower area and laying the tile so as not to damage the water proofing membrane on which the tiles are laid.

Falls to shower waste

Falls to the waste are achieved by creating a slope using a dry mortar mix over the waterproofing membrane. If a conventional round waste in the centre of the shower. The larger the tile chosen for the shower base the harder it is to lay the tiles so the fall is maintained. Usually the tiles must be cut into smaller pieces to follow the contour of the fall. In recent years the use of strip wastes have made the use of large tiles easier

Protecting waterproofing

As the waterproofing must allow for differential movement between the walls and floor of the bathroom. This is usually achieved by providing a break in the bond between the waterproofing membrane and the substrate where the floor and wall base meet. When tiling over this bond-brake a silicon sealant is used in place of grout to protect the waterproofing membrane in the event of differential movement between the walls and the floor.

ABIS building and pest inspections are conducted to the highest standard by building inspectors with a minimum of 10 years experience together with the highest professional qualifications in their field. ABIS has been in business over 27 years conducting both building and timber pest inspections.

Our highly recommended home inspectors are all long term trusted employees not here today gone tomorrow sub-contractors. ABIS Inspectors are supported by a unique computer aided inspection system and the latest inspection equipment such as high sensitivity thermal cameras costing thousands of dollars that others don’t often have.

When you book a pre-purchase inspection with ABIS, our friendly local (they know the area and are not in a interstate or overseas call centre) staff will make the whole process easy for you. Our Office team make all the arrangements with you, your agent, the vendor, the tenant (if there is one) and you will be sent an email to confirm the inspection time along with a pre-engagement letter which covers the scope of the inspection. Good communication and local knowledge are key to you getting the most out of your building and pest inspection. We are always happy to answer all your questions and you are most welcome to be on site when we do the inspection. Our technology, systems and processes also mean you get your high quality report shortly after your inspection is completed.

And all this for an incredible low price.

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