Installing into a suspended timber floor
Before commencing it is important to confirm that the timber floor/substrate has been installed to BS 5385 - part 3 and is suitable for tiling.
P5 grade/green chipboard is not suitable and should be replaced with external grade plywood of, we suggest, 18mm thickness.
As well as being clean, dry and free from debris the timber floor must be flat, level and load bearing.
We recommend use of the 'G3 Installation Accessory 2021'. When it is used there is no restriction on tile size or thickness.
Tiles smaller than 300mm x 300mm, or with a thickness less than 8mm, should not be used unless the sub-floor is constructed and strengthened using the 'G3 Installation Accessory 2021'.