TILER, HANDYMAN, PROPERTY MAINTENANCE

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Tiling Weight limits

Posted on April 15, 2014 at 10:48 AM Comments comments (2)
The maximum weight of tiling which can be supported by a dry, well-adhered plaster background is 20kg/m². This is equivalent to ceramic tiles with a maximum thickness of 8mm plus tile adhesive or natural stone tiles with a maximum thickness of 7mm plus tile adhesive
The weight of tiling to a plasterboard background direct (without plaster skim) should not exceed 32kg/m². This is equivalent to a ceramic tile and adhesive with a maximum thickness of 12.5mm and natural stone and adhesive with a maximum thickness of 10mm.
It is important to emphasise that the weights quoted includes both the tile and adhesive.
Further advice should be sought either from the manufacturer, regarding the suitability of the adhesives and grouts and also guidance must be sought from board manufacturer regarding additional information on recommended methods for the installation of boards.
The following table offers general guidance to some common types of building board and the maximum recommended weights for tiling.

Wall SubstratesMaximum Weight of Tiling per m² Gypsum Plaster 20Kg/m² Gypsum Plasterboard Direct (without a plaster skim) 32Kg/m² Plywood (WBP) Up to 30Kg/m² Lightweight Tilebacking Boards* Up to 40Kg/m². Dependant upon the type and thickness of the board. Glass reinforced Cement Sheets Up to 50kg/m², Dependant upon the type and thickness of the board. Gypsum Fibre boards Approximately 35- 40Kg/m²

Porcelain tiles

Posted on April 10, 2014 at 6:15 PM Comments comments (1)
Porcelain tiles

Porcelain tiles are ceramic tiles with a water absorption rate of less than 0.5 percent that are used to cover floors and walls. They can either be unglazed or glazed.
Large-scale production of porcelain tile is undertaken in many countries, with the major producers being China, Italy, Spain and Turkey. There are also countries undertaking small-scale production, such as Australia and strong growth in Brazil.
The hardness of the tile can be rated from zero to five according to ISO 10545-7 (also, ASTM C1027) test for surface abrasion resistance of glazed tile, and this can be used to determine suitability for various end use conditions.
Polished Porcelain tiles
The dense, hard surface of porcelain has made polishing a viable alternative to a glazed surface. This means that a tile can be fired, then a polish cut into the surface, creating a shine without a glaze.
Disadvantages of Porcelain compared to ordinary ceramic tiles
Porcelain is denser and therefore heavier to handle; it is generally more expensive. Being harder, it is harder to cut and drill, which may make fitting harder and more expensive. Polished porcelain may need sealing, where ordinary glazed tiles do not.
Adhesives
Specialised cements are necessary for installation of porcelain tiles, and in the US specifications are set by the Tile Council of America, and supported by the Tile Contractors Association Porcelain, being denser and heavier than ordinary ceramic tiles, needs a stronger adhesive to hold the weight on walls. Therefore typical ready-mix adhesives are not recommended for porcelain.
Sealing
When porcelain is first made, it is not absorbent, but the polishing process for making the unglazed surface shiny cuts into the surface, making it more porous and prone to absorbing stains, in the same way as natural stone tiles do. Unless they have a suitable, long-lasting treatment put on by the manufacturer, such as nanotech treatment, polished porcelain tiles will need sealing. Porcelain sealer’s are either water-based, which is cheaper, but does not last as long, or solvent-based.